Re: Reducing screen time

That is what I do.

Just had to get in the habit of remembering to swap glasses when I walk out of the office.

On Thu, Jun 18, 2020 at 06:53 Mark W. Farnham <mwf_at_rsiz.com> wrote:

> Band-aid, not cure: A good eye doctor will know there are mid range
> prescriptions in addition to near sighted correction and long range focus.
>
> For day long keyboard use get yourself some mid range prescriptions (with
> bifocal "flat top" if you also need reading glasses). That is maximum size
> of the upper mid range.
>
> Even if you don't need glasses for reading or long focus, if your eyes
> differ by just a little bit and are nearly co-dominant, your eye muscles
> constantly flex just a bit to bring them into exact match when you are
> staring at a fixed focal plane.
>
> If you're under 35 or so, this little tug may be insignificant. As you age
> your lens stiffens. When I got to about 50, having never previously needed
> glasses at all, my eyes started getting "fuzzy" after about four continuous
> hours. Then I was toast for about two hours, not just for the screen, but
> for any reading or anything requiring clear focus.
>
> (Taking a break helps, as previously mentioned in the thread.)
>
> A classic case is one eye slightly near sighted and one eye slightly far
> sighted which tends to mean you don't get glasses (or need them) until you
> are old...
>
> Good luck. If your eye doctor is NOT familiar with mid range focus plane
> glasses, get someone new.
>
> -----Original Message-----
> From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org]
> On Behalf Of Norman Dunbar
> Sent: Thursday, June 18, 2020 3:38 AM
> To: oracle-l_at_freelists.org
> Subject: Re: Reducing screen time
>
> Good Morning Kunwar,
>
> In the UK we have this set of rules: https://www.hse.gov.uk/msd/dse/.
>
> Also, I was educated into taking an eye break every 15-20 minutes, where
> you look out the window or across the office etc, something to change where
> your eyes are focussing.
>
> Get up an walk around every hour or so - go to the loo, make a coffee etc.
> Good for the eyes as well!
>
> The crud we hear about "blue light" being *harmful* is "woo". It isn't a
> big enough problem to make any difference to your eyes. It *might* have an
> effect on your sleeping habits though - not that I have found it makes any
> difference. One link is https://www.hse.gov.uk/msd/dse/ which
> states:
>
> White LEDs may actually emit more blue light than traditional light
> sources, even though the blue light might not be perceived by the user.
> This blue light is unlikely to pose a physical hazard to the retina. But
> it may stimulate the circadian clock (your internal biological clock) more
> than traditional light sources, keeping you awake, disrupting sleep, or
> having other effects on your circadian rhythm.
>
>
> HTH
>
> Cheers,
> Norm.
>
> --
> Norman Dunbar
> Dunbar IT Consultants Ltd
>
> Registered address:
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> Pudsey
> West Yorkshire
> United Kingdom
> LS28 7LG
>
> Company Number: 05132767
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Jared Still
Certifiable Oracle DBA and Part Time Perl Evangelist Principal Consultant at Pythian
Oracle ACE Alumni
Pythian Blog http://www.pythian.com/blog/author/still/ Github: https://github.com/jkstill

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