I am looking for a book or books that will give me information on the
following:
The mathematics of eyeglass prescriptions, including -
The "prime focus" distance and the expected range ("depth of field" in

[...]
____
Editor's Note.—The author of the following article is engaged in
literary work which compels her to use her eyes constantly for reading

Hey, all.
So... I'm 40, I have a +4.5-ish prescription that hasn't changed
appreciably in about 20 years. Pretty static.
Possibly of note as well - I have slightly elevated blood pressure

[...]
____
The testimony of the following letter to the value of the experiences
of patients recently published in this magazine is very interesting.

Stories from the Clinic
3. Retinitis Pigmentosa
By Emily C. Lierman
I am not a physician, and I know very little about the disease of the

I was eating oily chicken yesterday lunch and some
oil was propelled to my eyes due to certain spoon
directions. The temperature of the oil is not hot,
but room temperature. Does such incident usually damage the

[...]
Stories from the Clinic
3. Retinitis Pigmentosa
By Emily C. Lierman

This book is the work of Dr. Klaus Schmid's concern -- when his
children got stair-case myopia from repeated over-prescription of a
minus lens.
His book is also FREE.

[...]
How I Helped Others
By Victoria Coolidge
When I had become able to read without glasses, and my headaches had

Subject: Preventing "pseudo-myopia" before it becomes "axial-myopia"
-- and can not be "recovered".
For those interested.  I have NEVER claimed you can "cure" axial-
myopia.  NEVER!  What I suggested is that, with proper experience and

Subject:  EXCESS of majority-opinion Jan.
While Jan has every right to express his believe that a minus has no
effect on the eye's refractive STATE, there are many ODs who believe
that the minus poses a SECONDARY RISK for all who use it.

Every time you see a posting made by the laymen Otis keep in mind he is
hurting people, not helping.
He is trying to sell you a useless book about how to avoid myopia even
if it isn't there and not ever shall be.

Subject:  The Effect of Corrective Lenses on Refractive State in
Myopes: A Meta-Analysis of Animal Experiments and Clinical Studies
PURPOSE: Experiments in the 1990s established that minus lenses can
induce myopia in laboratory animals. It was then suggested that myopia

Jan maintains that prevention is impossible -- and that second-opinion
people who advocate prevention are "hurting your eyes".
This is profoundly narrow minded, and ignores the growing development
of prevention-minded optometrists.

When Bates published his 1913 study, he made the statement that the
minus would take "pseudo-myopia", and in short order make it
"permanent-myopia".  This was an insightful perspective on the natural
eye's behavior.