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Article #57Re: help with ambient light levels?
From: J. Maxwell Legg
Date: Thu, 24 Sep 1998 00:00
Date: Thu, 24 Sep 1998 00:00
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Jim Curran wrote: > > I hope someone here can help me. I am an ergonomist who has not worked in > the field in several years. I work in an office where the light levels > strike me as too high, and I need to provide justification to get them > changed. > > I wonder if anyone has the most current recommendations for ambient light > levels for VDT use (& citations). > > Also, how should I measure the light level? Is a standard photography light > meter sufficient, or do I need a fancy photometer? > > Thanks in advance for any help you can provide. > > Jim Curran > 3Com Corp. > jim_curran@mw.3com.com In my pre internet days back in 1994, I read a paper put out by a Blain Stowkoski who was then head of the British Columbia Ophthalmic Association. This paper dealt with exactly what you're looking for. From memory he talked about a 10% reduction of light from behind and a 20% reduction of light in front as measured by the screen's light or something along those lines; - but don't quote me as I'm only guessing at what was written. I can't find him on the net but his office was in Westminster BC and he should still be in the phone book. I met with him to discuss the effect of mind machines on the eye. After careful thought he said they would be a good exerciser for the retina.
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 111621,36c4e631faed93ce X-Google-Attributes: gid111621,public From: "J. Maxwell Legg" <income@IHUG.CO.NZ> Subject: Re: help with ambient light levels? Date: 1998/09/24 Message-ID: <3609B7C8.21E0F2FD@ihug.co.nz> X-Deja-AN: 394262049 Sender: PCHealth -- The Health Effects of Computer Use <PCHEALTH@LISTSERV.AOL.COM> Content-Transfer-Encoding: 7bit Approved: NETNEWS@AUVM.AMERICAN.EDU * References: <86256688.0063107E.00@mwgate02.mw.3com.com> X-Accept-Language: en Comments: ******************************************************** Approved-By: kinnaman@EMISSARY.NET Content-Type: text/plain; charset=us-ascii Organization: Ekus UN-incorporated MIME-Version: 1.0 Newsgroups: bit.listserv.pchealth