[Magdalen] Specs advice?
Jay Weigel
jay.weigel at gmail.com
Sun May 27 11:54:53 UTC 2018
My optometrist does the field of vision and retinal photography and all the
other tests. Most of the newer optometrists do, as well as any older one
who has updated their training. Don't talk smack about them! A good one
also knows when to refer to an ophthalmologist and where to send you.
On Sun, May 27, 2018 at 7:22 AM, Grace Cangialosi <gracecan at gmail.com>
wrote:
> And I just applied for a passport and had to have my picture taken without
> my glasses.
>
> > On May 27, 2018, at 4:29 AM, Roger Stokes via Magdalen <
> magdalen at herberthouse.org> wrote:
> >
> >> On 27/05/2018 03:35, Ann Markle wrote:
> >> You do need a measurement of pupillary
> >> distance, which was available from the last time I purchased glasses
> from
> >> an optometrist/optician practice. That measurement doesn’t change much,
> >> even with significant weight loss or gain.
> >
> > That constancy is one of the reasons it is used in face recognition such
> as at border control. The apparent distance can vary as a result of
> spectacle lenses refracting the light which is why it's "no glasses" when
> doing that check.
> >
> > Roger
>
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