Board:   [fsxNet] fsx General
Subject: My eyes
From:    Ogg(21:3/110.10)
Date:    Sun Oct 11, 2026 09:58

Hello pF!

** On Wednesday 07.10.26 - 07:40, poindexter FORTRAN wrote to Nigel Reed:

 pF>  I've worn glasses for some time, but I hated reading glasses. I needed
 pF>  some astigmatism correction at distance, but not much. I've been
 pF>  wearing progressives for about 30 years now. They're expensive, which
 pF>  bites, but I don't have to worry about taking them off and on again to
 pF>  read.

 pF>  I'm 60 and about due for another eye exam, thankfully my prescription
 pF>  is mostly stable. Usually I end up scratching my lenses and that
 pF>  prompts me to get an exam and new glasses every year or two.  :)

Sounds like you could benefit from the MagicEye3D-type exercises.

I don't need glasses for close-up, but I do find that occassionally my eyes
take time to adjust to distance if I've been staring at a screen for an
extended period, and sometimes it remains a bit out of focus. But a few
minutes doing the exercise clears that up.

I was steared to such exercises when I complained about difficulty seeing the
distant boards at university. First, the campus Dr put me through the lens
machine, but no one particular setting seemed to stick. I was diagnosed with
astigmatism - probably due to stresses.  But he also mentioned some eye
exercises I could do.  The basic one was "look into the distance, identify
two vertical lines - like the edges of a building, two posts, or the vertical
edges of a door or window - then cross your eyes to line up those edges -
then, try to force those edges to come into focus."  At first it feels
impossible to get the focus, but the whole process is the point. After
several attemps and holds, distance vision (and consequently close-up vision)
improves.

The MagicEye3D techniques are similar (parallax viewing and cross-eyed
viewing) since they exercise the same muscles and the lens.

This page describes the whole science and the two types of viewing quite
well..

https://en.wikipedia.org/wiki/Autostereogram

"Those who wear eyeglasses with so-called "progressive" lenses, in which the
focal length gradually changes so as to ease the viewing of close objects
using the lower part of the lens, may find that viewing a stereogram is
easier if the glasses are pushed up a little so that the stereogram is viewed
through a part of the lens optimized for images that are closer than the
actual distance to the stereogram. When the eyes are made divergent by
looking (or pretending to look) at a far-away object, the overcorrection from
viewing the stereogram through the "wrong" part of the lens can bring the
stereogram into focus without needing to overcome the tendency to focus on
the far-away object while attempting to focus on the stereogram."

I'm the only cousin out of 14 + about half of that count of 2nd-cousins + all
the aunts and uncles, that doesn't wear glasses, and I'm nearing 70.  I
attribute this feat to doing the exercises over the decades.


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