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pdejager
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Posted: Fri Aug 26th, 2005 11:17 |
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G'day, fellow MPers.
I've noticed a few people asking how much light there is in certain situations, and the suggestions that the easy way to find out is to buy a light meter.
I'm a sucker for any kind of gadget (yes, I know, boys and their toys, but this toy's really useful) so I bought one.
I've been doing a few measurements and here are a few that might have some meaning for you.
My side of the bedroom at night, lit only by a shaded 40W bulb on my bedside table -- 5 lux (measurement taken next to my face)
My bedroom, light coloured blind pulled down, light coloured linen curtains drawn, midday, winter in Sydney, sun shining, but not on the window -- 30 lux
Bedroom at night, lit by 20W 'Energy Saver', a warm white mini-fluorescent unshaded bulb in a ceiling fitting with a claimed output equal to a 100W incandescent. This was actually closer to a 75W incandescent. -- 60 lux at 1 metre.
My study, lit by a 75W unshaded bulb and a 15 inch CRT computer screen (measurement taken next to my face) -- 50 lux
Office well lit by natural light, big windows, sawtooth roof with windows facing away from the sun, winter in Sydney, sun shining -- between 150 and 250 lux, depending on the time of day.
I think a good rule of thumb is: if you're wearing your 10% NoIRs and you can see well enough to read, it's below 30 lux (and if you can't see what you're doing, it's well below 5 lux!)
____________________
MCS/CFS (1990)1,25-D/25-D 01Jul05: 38/28. 25-D 27Oct05: 16, 21Aug06: 8. Benicar started 27Aug05. Mino started 12Sep05. Started Phase 2 01Nov05. Started Phase 3 25Jul06. Supplements Se, Zn,Ca, Mg, probiotic, Vit C, Vit E
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LeAnne
Member in Phase 3
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Posted: Fri Aug 26th, 2005 12:29 |
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Thank you for your helpful tips! I have just been using a 40 watt bulb in every room. If their is more light used, I wear my Noirs. Thank you for doing the measuring. It sure helped shed some light for me.
LeAnne
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Neuro-Sarcoidosis/lungs, spleen, nervous system, skin lesions, 125D66, MP 8/05, Ph1 3/06, Ph3 7/06, NoIRs, low lux home, cover up, 25D9 Sep07
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sunflower
Member in Phase 2/3
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Posted: Fri Aug 26th, 2005 22:14 |
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pd,
thanks so much for the great info...this allows more light than i thought ...sun
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lyme,fibro,candida,allergies,gerd,osteopenia/ pain,fatigue,dizzy,memoryloss20+yrs/ celexa,vicodin,cal-mag/beni 40mg q6h 11-05/phase 3,8-06/1,25d=34 25d=36,18,17,10,13,5,7
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anne p
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Posted: Sat Aug 27th, 2005 04:14 |
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Thank you Peter
As one who has wanted to know , I am so glad you went to the trouble to buy a meter and test, and share it with us.
Anne 
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Sx24years CFS/Lyme/ spinalstenosis abx long term Labs 25D,22-1,25D,23.46(unreliable)MP 7/01/05 PH.1.24/01/05,PH2.5/03/05 stopped MP Sept20 resumed phase1 Jan4/06/ somac40mgday Neurontin 600mg 3xday duatrol3xday imigran50mgprn panadeineforte prn
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scooker48
Member in Phase 3
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Posted: Sat Aug 27th, 2005 15:41 |
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Where do I purchase the light meter? What label or kind?
Thanks,
Sherry
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Necrotizing granulomas biopsy 10/88; Dx 12/04 Sarcoid liver spleen. 2/2/05: VitD 25/VitD125 62. 5/9/09 D25, D3 6; D25 D2 <4, Liver function normal 4/08; Wear NoIRs outside. No K creme used. 5/09 Liver and kidneys normal.
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Aussie Barb
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Posted: Sat Aug 27th, 2005 19:44 |
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Sherry,
In Australia we can get a Lux / light meter from an electronics store (Dick Smith's). or a Camera Store may have them. Other Members may know where in Other Countries.
thanks, Barb ...
____________________
Barb: Dx Inflammatory Disease Endocrine Imbalance 2003| Depression| 24+ years not Dx| MP Aug04| ABC of MP| MP Search|
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pdejager
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Posted: Sun Aug 28th, 2005 00:34 |
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G'day, Sherry.
I just googled "light meter" lux pocket and got hits at a number of online electronics stores in the USA.
Models similar to the one I bought were at multimeterwarehouse.com ($US69.95) and action-electronics.com ($65). I'm sorry, I don't know the USA well enough to know the name of many electronics chain stores, but Tandy and Radio Shack did not appear to have similar meter.
In Australia Dick Smith and Jaycar sell identical meters with their own brand name for about $AUD50.
Hope this helps. Peter
____________________
MCS/CFS (1990)1,25-D/25-D 01Jul05: 38/28. 25-D 27Oct05: 16, 21Aug06: 8. Benicar started 27Aug05. Mino started 12Sep05. Started Phase 2 01Nov05. Started Phase 3 25Jul06. Supplements Se, Zn,Ca, Mg, probiotic, Vit C, Vit E
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pdejager
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Posted: Sun Aug 28th, 2005 01:06 |
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Thanks, everyone, for your replies.
I was emailed privately and asked how far away from the light bulb I took the measurement. That was a very good question, because the light intensity falls very quickly as you get further away. But then light reflected from the walls becomes important.
So I did a couple of experiments. They were done in a 10ft by 10ft (3m by 3m) bedroom, 8ft (2.4m) high white ceiling, light-coloured walls, light-coloured furniture. The bulb was in an unshaded ceiling fixture. Results were:
40W long-life frosted bulb: 65 lux at 3.3ft (1m); 45 lux at 4 ft; 20 lux at 6.6ft(2m)
75W long-life frosted bulb: 145 lux at 3.3ft (1m); 110 lux at 4 ft; 50 lux at 6.6ft(2m)
The 100W bulb I wrote about in an earlier post was actually a 20W 'Energy Saver', a warm white mini-fluorescent with a claimed output equal to a 100W incandescent. This was actually closer to a 75W incandescent.
Measurements in a main bedroom with a white ceiling, light coloured walls and lots of dark furniture were: 60 lux at 3.3ft (1m); 30 lux at 6 ft; 20 lux at 7ft (about where my head is when I'm in bed). However, I find this far too bright, and much prefer to read to the light of a 40W bulb in my well-shaded bed-side lamp, about 2.5 ft away from my head. Indeed, I'm thinking of changing this to a 25W bulb.
Hoping that this gives you a better idea of how bright 30 lux really is.
All the best, Peter
____________________
MCS/CFS (1990)1,25-D/25-D 01Jul05: 38/28. 25-D 27Oct05: 16, 21Aug06: 8. Benicar started 27Aug05. Mino started 12Sep05. Started Phase 2 01Nov05. Started Phase 3 25Jul06. Supplements Se, Zn,Ca, Mg, probiotic, Vit C, Vit E
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Johan
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Posted: Sun Aug 28th, 2005 03:06 |
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Hi Peter. Thanks for your information. Like others I also had been wondering how much light I'm actually exposed to.
I changed all the light bulbs in the rooms where I spend time to 25Watt - bedroom, study, bathroom, etc. I find that this is more than adequate to see by and to read by. Often I still wear my Noirs, except when I'm reading, thinking that, if it doesn't help, it also won't hurt.
Johan
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Extreme left buttock spams-like pain rad. into leg to big toe, 1990. Atrial fibrilation, 6/04. Pre MP 06/05 1,25D=62 25D=33. Gabapentin 5x300mg/d, Atenolol 2x50mg/d, Aspirin 150mg/d, Codein/Paracetamol 30/500mg as needed. 8/15 Benicar. 8/24 full MP.
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ShrnHml
Member in Phase 2/3
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Posted: Mon Aug 29th, 2005 18:54 |
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Has anyone ordered the lux light meter shown on EBay? The cost is shown in Great Britain pounds, as is the postage, so the total cost is somewhere around $35USD.
These are the least expensive ones I've seen, and they look like they would do the job......this pretty simple job.
I would have no other uses for a lux meter as I'm not into photography.
Sharon
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Neuroborreliosis, MP 3/05, 1,25D 62; 3/06 25D<4, ModPh2 12/05, Premarin, Effexor, stopped Benicar 1/07....no longer in study
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Nightshade
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Posted: Wed Sep 7th, 2005 15:22 |
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Hello Peter,
thanks for posting the lux results. They indicate energy save bulbs generate less IR light for the same visible light than conventional lightbulbs: The "as bright as 100W" and the 40 W have almost equal lux values.
Energy save bulbs help avoiding IR. Is this important, the IR from lightbulbs enough to make VitaminD or is only their visible light getting in the eyes a problem?
Nightshade
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MP: Age 33 Borreliosis 83? dx 02, Brain fog, tiredness, depress, arthrit knees hands, Headaches. started Benicar 11.11.05 Mino 27.11.
25D=20; 1,25D=27 NOIRs avoid Light/VitD
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Reenie
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Posted: Wed Sep 7th, 2005 18:56 |
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Hi Sharon,
Trevor had a light meter at the Chicago Conference that looked identical to the ones I saw advertised on eBay. I'm not sure if that's where he ordered it from, but I'd say it was the same or very similar to those.
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Aussie Barb
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Posted: Wed Sep 7th, 2005 20:40 |
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Nightshade
The MP glasses requirements are listed in PROTECTING YOUR EYES as
#907 dark amber for outdoors
100% UV Protection.
100% Blue Light Protection
100% Infrared Protection
2% visible light for outdoors
#901 medium amber for indoors
100% UV Protection.
100% Blue Light Protection
100% Infrared Protection
10% visible light for indoors <<<<<
Barb ...
____________________
Barb: Dx Inflammatory Disease Endocrine Imbalance 2003| Depression| 24+ years not Dx| MP Aug04| ABC of MP| MP Search|
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ShrnHml
Member in Phase 2/3
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Posted: Thu Sep 8th, 2005 08:15 |
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Thanks, Reenie. I am more confident in ordering it now.
Sharon
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Neuroborreliosis, MP 3/05, 1,25D 62; 3/06 25D<4, ModPh2 12/05, Premarin, Effexor, stopped Benicar 1/07....no longer in study
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pdejager
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Posted: Thu Sep 8th, 2005 11:20 |
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Hi, Nightshade.
Yes, the 20W 'Energy Saver' (really a mini-fluorescent) was similar to the 40W incandescent, but the measurements were taken in different rooms, and the 'Energy Saver' is about 4 years old, so it is less bright than when it was new. It does generate less IR (it doesn't get as hot) but I suspect that it generates more UV than the incandescent. Also, you can't use a dimmer with an 'Energy Saver'.
All the best, Peter
____________________
MCS/CFS (1990)1,25-D/25-D 01Jul05: 38/28. 25-D 27Oct05: 16, 21Aug06: 8. Benicar started 27Aug05. Mino started 12Sep05. Started Phase 2 01Nov05. Started Phase 3 25Jul06. Supplements Se, Zn,Ca, Mg, probiotic, Vit C, Vit E
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tom
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Posted: Fri Dec 2nd, 2005 00:07 |
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| After reviewing this sites information in regard to light meters I still have a couple of questions. Their appears to be a big price difference in light meters with a "Hold Switch" and those that only have a "Flash Measure". Which of these would meet my needs. They are both digital, look identical however their is a great price disparity. Anyone who is familiar with this I would greatly appreciate your insite. Thank you tom
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CFS 125D50, Ambien NoIRs Ph2 03/06 Ph3 10/06 last 25D22 Jan06
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Dr Trevor Marshall
Research Team
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Posted: Fri Dec 2nd, 2005 02:23 |
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Tom,
You only need to measure the steady-state light levels, not the instantaneous burst that comes from a camera's flashtube. So the "hold" capability is really of little interest. It is designed to keep displaying the peak value of a flashtube's output.
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Larry
Member
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Posted: Fri Dec 2nd, 2005 17:17 |
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Hi, Tom
I purchased a light meter about seven weeks ago, and I have used it a lot in modifying the lighting both at home and in my office.
When I began looking for a light meter, I went to a large photographic supplies retailer first. The prices on the meters were staggering--about $250 up to $800 or so (Canadian dollars).
I eventually purchased a light meter online from http://www.imarketcity.com for $38.95 U.S. (plus an additional $15.58 U.S. for shipping to Canada). The model number of the meter is LX1010B Economic Digital Lux Meter with carrying bag. The meter has a hold button.
Your profile does not say if you live in the United States; regardless, I would highly recommend this product.
Regards,
Larry
____________________
-osteopenia,psoriasis,sleep disorder,floaters, depression, rosacea, blepharitis, psor arth. Celexa, ApoFlurazepam,1000mgVitC,Gravol -OCT/04: 1,25-D=45;25-D=39 JUNE/05:25D=7; Dec2/05=Benicar
40mg4QD;Dec14Mino25mgQOD;Dec21=50QOD;Jan6=75QOD
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Sandy2
Member
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Posted: Fri Dec 9th, 2005 16:28 |
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Larry: Since I can't figure out how to private message you, I hope you will read this post. I ordered the LX 1010B Lux Meter, but I can't figure out how to use it. It only registers a 001 with the 1 flashing no matter where I go. Is it malfuntioning or do I just not understand how to use it. It seems pretty simple.
Sandy
Larry's answer: Take the cover off the sensor. Last edited on Fri Dec 9th, 2005 18:11 by Sandy2
____________________
lyme (symptomatic 5 yrs) anxiety, neuropathy, osteoporosis, muscle spasm, pain. Start Ben mg q6h 11/6/05, Noirs, avoid light/D. Clonazepam, Bioiden Hormones (Tri-Est, DHEA, Prog Crm) probiot. 25D=23, 125D=56 10/14/05. Stopped Ben 11/9/05 reaction.
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sunflower
Member in Phase 2/3
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Posted: Fri Dec 9th, 2005 23:38 |
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larry and sandy,
this just cracks me up. i received my lux meter (a different one from yours) a couple of days ago and couldn't get it to work properly. it was just registering 0 or 1 no matter where i pointed it. i had it all packaged up ready to send back to the merchant when i read your posts! my husband nor i had figured out that the sensor had a cover on it, and when i snapped it off...voila...it works great!! i love this website--thanks sandy and larry .....sun
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lyme,fibro,candida,allergies,gerd,osteopenia/ pain,fatigue,dizzy,memoryloss20+yrs/ celexa,vicodin,cal-mag/beni 40mg q6h 11-05/phase 3,8-06/1,25d=34 25d=36,18,17,10,13,5,7
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Sandy2
Member
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Posted: Sat Dec 10th, 2005 01:53 |
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| No problem. I just blame it on the brain fog.
____________________
lyme (symptomatic 5 yrs) anxiety, neuropathy, osteoporosis, muscle spasm, pain. Start Ben mg q6h 11/6/05, Noirs, avoid light/D. Clonazepam, Bioiden Hormones (Tri-Est, DHEA, Prog Crm) probiot. 25D=23, 125D=56 10/14/05. Stopped Ben 11/9/05 reaction.
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Bill
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Posted: Tue Dec 13th, 2005 18:46 |
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hi all
I am a videographer or will be again soon when i can work in bright lights again. My question is how much light is too much i own a meter but i only know how to set up a camera with it not to see if an amount of light will make me feel sicker then i do.
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Diagnosis, Sarcoid May 2005 lymph biopsy/Phase 1 MP,Started Benicar 40mg q6 1/7/06 started mino 75mg. q48 4/11/06 ,diazepam 5mg tid, D tests 11/05/05:1,25D=60 & 25D=19.8, avoiding light & D, NoIRs 12/13/05
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Aussie Barb
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Posted: Tue Dec 13th, 2005 19:21 |
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Bill
for full information on the need to avoid light see the Light Information Posts in ESSENTIAL INFORMATION ABOUT THE MP (Required Reading)
see AVOIDING SUNLIGHT and BRIGHT LIGHTS How and why to protect skin and eyes while on the MP
Natural light > protect skin and eyes..
Artificial light > protect eyes / not skin..
Less than 30 lux is the requirement..
Barb ...
____________________
Barb: Dx Inflammatory Disease Endocrine Imbalance 2003| Depression| 24+ years not Dx| MP Aug04| ABC of MP| MP Search|
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Larry
Member
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Posted: Thu Dec 15th, 2005 17:31 |
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Helo, Members
I thought I would add a few comments regarding my own experience with reducing my at-home lighting to 30 lux or less...
Six weeks before starting the Benicar, I began a gradual reduction of light in my apartment suite. Many of the ceiling light fixtures had as much as 2 x 100 = 200 watts. I gradually reduced the bulbs, from 100s to 60s to 40s to 25s to 15s. Before I started the Benicar, I had a max of about 40 lux.
I continued the gradual reduction in the last two weeks (since starting Benicar). The maximum now in any one fixture is 2 x 15 = 30 watts. Some fixtures have only 15 watts and two have only one 7.5-watt bulb. I didn't even know that there was such a thing as a 7.5-watt bulb!
The key to me was the gradual reduction over time. What may seem somewhat dark one day appeared normal a few days later, and so on, until I became adjusted to a max of 30 lux.
The use of the light meter was extremely helpful. I find that a maximum of 30 lux is not dark to me now. At home, I wear my 40% NOIRS only when watching TV programs (I have no computer at home)--and only those programs which are too bright (even with the brightness on the TV turned down to about 1/3 its previous level). Otherwise, I do not need to wear my NOIRS in my home at all!
I believe that some people feel that their home has to be so dark that they can barely see to manoeuvre around. With my increased sensitivity to light caused by the Benicar, I find no problem seeing quite well WITHOUT MY NOIRS with a level of 30 lux or less.
Because I live alone, I was able to change the lighting drastically so that I would not have to wear my NOIRS all the time at home. Those of you with others to consider will have to adopt a strategy that works well for all.
I hope this info helps...
Regards,
Larry
____________________
-osteopenia,psoriasis,sleep disorder,floaters, depression, rosacea, blepharitis, psor arth. Celexa, ApoFlurazepam,1000mgVitC,Gravol -OCT/04: 1,25-D=45;25-D=39 JUNE/05:25D=7; Dec2/05=Benicar
40mg4QD;Dec14Mino25mgQOD;Dec21=50QOD;Jan6=75QOD
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Bill
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Posted: Thu Dec 15th, 2005 18:20 |
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Foot Candles. Conversion Formula: fc x 10.8 = Lux
My light meter is very old but works well. My video cameras have them build in so i have not used the meter since i went digital so i had to find a converion from foot candles to lux, I found it now i share it.
Last edited on Thu Dec 15th, 2005 18:21 by Bill
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Diagnosis, Sarcoid May 2005 lymph biopsy/Phase 1 MP,Started Benicar 40mg q6 1/7/06 started mino 75mg. q48 4/11/06 ,diazepam 5mg tid, D tests 11/05/05:1,25D=60 & 25D=19.8, avoiding light & D, NoIRs 12/13/05
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paulalbert
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Posted: Tue Jan 17th, 2006 03:10 |
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I just received my lux meter, and I took a number of readings around my environment:
0 lux-- bedroom, daytime (seriously)
3-- bedroom, with insanely dark nightlamp on
5-- TV, 12 feet away, other lights off
5-15-- dining room, one light on
15-30-- computer (with dark background), 18 inches away
20-40-- kitchen, blinds drawn
70-90-- living room, all lights on
80-150-- bedroom, overhead light on
100-150-- dining room, all lights on
100-290-- apartment lobby
100-320-- tunnel to subway, in subway
30,000-60,000-- outside, pointing away from sun, Jan., 2 pm, New York
70,000-- outside, direct sunlight, Jan., 2 pm, New York
Some observations:
1. The NOIRs performed almost precisely as advertised. The 10% reduced lux readings by 90% and the 2% cut down on lux by a factor of 50.
2. I remember learning in my physics class that light energy from a fixed source is proportionate to the reciprocal of the square of distance, and this seemed to be the case. I noticed that even a couple feet away from a light made a big difference.
3. If there were any surprises, it was how bright the brightest environments were and how dark the darkest were. This has made me rethink how important it is to protect myself from the brightest source of light (i.e. outside).
As a point of illustation, consider these two environments:
Enivronment #1: sunny January afternoon in New York; 70,000 lux
Environment #2: inside, blacked out room, TV at 15 feet away; 5 lux
Let's say that I decide to walk to the subway on a certain sunny afternoon, and I forget to bring my 2% NOIRs and instead go with my 10%. The walk takes 5 minutes, and during that time, even with my 10% shades, my eyes are exposed to 7,000 lux per second.
Now, let's say I'm on the subway, and I get a pang of regret for forgetting to bring my darker shades. I resolve to make up for it by wearing my 10% NOIRs while watching TV.
How long would I have to wear my NOIRs watching TV to make up for my 5 minute oversight?
Let's see-- during that fateful walk I was exposed to an extra 1.68 million lux-seconds, and each second spent watching TV means exposure to 5 lux. Wearing my shades for TV viewing (which non-hypothetical Paul actually has been doing regularly) cuts exposure from 5 lux to essentially 0 lux.
It turns out that I would have to wear my shades for a total of more than 19 days worth of TV viewing to achieve the same cumulative protective effect as remembering to wear my 2% shades (in lieu of the 10%) outside for just five minutes.
For those sticklers out there, this argument:
1. doesn't take into account pupil dilation
2. assumes that all light energy that hits the eye is absorbed equally regardless of duration-- i.e., 10 lux over 1 minute has the same impact as 1 lux over 10 minutes. I'm not sure if this last assumption is true or not, but it does make for good copy!
PaulLast edited on Tue Jan 17th, 2006 03:11 by paulalbert
____________________
Diag CFS 6.03 / sympt since 9.02 / exercise, food intol, sleep prob / 1,25D: 16, 4.06; 1,25D:27, 25D:26 7.04; 1,25D:43, 25D:6 6.05; 1,25D:17, 25D:8 8.05; / MP: 7.04 / Ph. 3 / Bacteriality
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ShrnHml
Member in Phase 2/3
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Posted: Tue Jan 17th, 2006 05:49 |
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Thanks, Paul......I love "your work".
What a graphic portrayal of the strength of outside light!
Obviously, you do not have brainfog.
Sharon
____________________
Neuroborreliosis, MP 3/05, 1,25D 62; 3/06 25D<4, ModPh2 12/05, Premarin, Effexor, stopped Benicar 1/07....no longer in study
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Dr Trevor Marshall
Research Team
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Posted: Tue Jan 17th, 2006 07:21 |
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Paul,
Even though the light from a TV screen falls as the square of the distance, you are focusing your gaze upon it, and you really should measure the value up close. Guesstimate the percentage of your vision that the screen takes in normal use, and figure the distance from that.
Excellent work on your bedroom blackout, incidentally 
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paulalbert
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Posted: Tue Jan 17th, 2006 16:29 |
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N-U-T-S. As Trevor touches on, one thing I failed to take into account was that (unlike the sensor on my lux meter, which has a "frosted" plastic covering ensuring that you get an ambient light reading) the eye has a fovea or focal point. Incidentally, this is because there are more rods and cones there, and more light is received there.
So, my statement is true, but only on the condition that you watch TV out of the corner of your eye.
I wouldn't know quite how to figure this in the calculation, but I did take the time to discover that the range of pupil dilation-- at least according to Wikipedia-- is 1.5 mm to 8 mm. If the amount of energy absorbed is proportional to the area of the pupil opening, then pupil dilation can decrease the amount of absolute energy absorbed in very light environments relative to very dark environments by a factor of up to 28: 8^2/1.5^2.
Paul
____________________
Diag CFS 6.03 / sympt since 9.02 / exercise, food intol, sleep prob / 1,25D: 16, 4.06; 1,25D:27, 25D:26 7.04; 1,25D:43, 25D:6 6.05; 1,25D:17, 25D:8 8.05; / MP: 7.04 / Ph. 3 / Bacteriality
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KFaucher
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Posted: Tue Jan 17th, 2006 17:31 |
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Paul, with some work you might be able to compensate for pupil dilation.
In optics, the amount of light that can be picked up is often expressed as the exit diameter. This equals the focal length divided by the diameter of the objective lens. You might be able to compensate for dilation by making tubes of different lengths and objective openings. Or maybe not.
To make it even more complex: Any backyard astronomer can tell you that the dynamic range of the human pupil decreases dramatically with age. By age 40 most people are lucky to have 5mm maximum opening. That may be good for the Mp, but it makes faint, fuzzy astronomical objects (faint fuzzies) more difficult to see.
Ken
EDIT: Paul, please ignore this post. I posted quickly at lunch with my mind elswhere and screwed it up. The exit diameter is slightly more difficult, it is the objective lens diameter (mm) divided by the magnification.
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scooker48
Member in Phase 3
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Posted: Tue Jan 17th, 2006 17:43 |
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This work is fascinating and invaluable to us who wish to recover by using the MP.
But it has made me do some soul searching since reading it
this morning: even though I wear the 2% NoIRs, and have the
LED monitor turned down to 0 (which the IT fellow took
care of ), I am getting too much light. Is my understanding
correct?
Thank you from the bottom of my heart for this insight.
Sherry
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Necrotizing granulomas biopsy 10/88; Dx 12/04 Sarcoid liver spleen. 2/2/05: VitD 25/VitD125 62. 5/9/09 D25, D3 6; D25 D2 <4, Liver function normal 4/08; Wear NoIRs outside. No K creme used. 5/09 Liver and kidneys normal.
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Aunt Diana
Moderator
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Posted: Tue Jan 17th, 2006 17:58 |
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I, too, want to thank you for that info...it really helps....I think I can actually brighten my house a bit., and that is a welcome surprise
I have been keeping the house very dark.....25 watt bulbs one or two per room...so if I understand you correctly I can use a 40 watt bulb here or there...
in just the last day or so my eyes don't seem as sensitive to light as they originally were....I seem to be able to handle a bit more without it really bothering me. Is this possible at this point? To explain a little better...I couldn't tolerate more than two lights (25 Watts) in the living room. Lately if the third lamp is on it doesn't hurt my eyes.
I always wear my noirs if it's any brighter than that and try to use them at the computer. I am keeping all the windows darkened and am very careful to avoid going out during daylight unless it's absolutely necessary.
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Lyme 1987, neuro cardio fatigue achiness brain fog depression, anxiety. Pacemaker, D.1,25 32; D <5; 12/07 <6, hydrocodone, lorazapam, benedryl, zantac, colase, Noirs, cover-up or avoid sun, house <30lux. Feb 08 Phase 3. 6/08 D <4, D1,25
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paulalbert
Board Staff
| Joined: | Fri Jul 16th, 2004 |
| Location: | USA |
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Posted: Tue Jan 17th, 2006 22:04 |
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Diana & Sherry,
Especially early on, I got really confused about what the appropriate amount of light is. What really threw me for a loop was how I seemed not to be noticably affected by my cubicle environment, but then I started wearing my shades 100% of the time at work and behold, my insomnia went away! So, I was sensitive, but not in a way that was immediately perceptible. It made me think twice about going with my gut when it came to light sensitivity.
So what's the right amount? This is my understanding... in the early going: as little as you can comfortably tolerate. Later on, I think the consensus is that it's OK to increase the light you're exposed to a bit, so long as you're certain you're still making progress.
If either of you-- or anyone else, I suppose-- are unsure about how much or little light you current environment throws off, you are welcome to borrow my light meter provided that you reimburse me for postage... and that your picture doesn't look too suspicious.
Paul
p.s. Light at my work varies from 90-900 lux. Looking straight ahead it's 300 lux or so.
Last edited on Wed Jan 18th, 2006 00:00 by paulalbert
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Diag CFS 6.03 / sympt since 9.02 / exercise, food intol, sleep prob / 1,25D: 16, 4.06; 1,25D:27, 25D:26 7.04; 1,25D:43, 25D:6 6.05; 1,25D:17, 25D:8 8.05; / MP: 7.04 / Ph. 3 / Bacteriality
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KFaucher
Member in Phase 3
| Joined: | Sun Aug 1st, 2004 |
| Location: | USA |
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Posted: Tue Jan 17th, 2006 22:22 |
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| Paul, please ignore my earlier post. I posted quickly at lunch with my mind elswhere and screwed it up. The exit diameter is slightly more difficult, it is the objective lens diameter (mm) divided by the magnification.
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Joy
Member in Phase 2/3
| Joined: | Mon Aug 1st, 2005 |
| Location: | USA |
| Posts: | 250 |
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Posted: Mon Dec 18th, 2006 18:26 |
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Can anyone tell me where to get the least expensive light meter which will work for our purposes? (in the USA)
I'd love to find one for around $20 or less, but so far haven't seen any online for less than $38.95 plus postage.
Thanks,
Joy
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CFS, FM, MCS, RA, low thyroid.
Began Ph 1 9/06, Phase 2 1/07. Stopped abx 11/07; stopped Benicar 5/09. 25D: 32,17,5,4,4
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