I am a recently graduated ophthalmologist and I am trying to design a
system for checking vision on a computer.  There are several commercial
designs - but they are quite expensive - $2000.  I figured I could put
something together myself and have played around with powerpoint and I

Of course each person is different, but from what I understand, most human
beings start developing presbyopia at around 45 years old, starting mildly,
and it gradually gets worse.
My question is: at about what age does it usually stop getting worse, and

What causes this?  Is it the pupil opening up wider than the optical
zone of the lens (if I'm using that term correctly)?  Does a larger
lens imply a larger OZ?  I ask because I got some bigger lenses to
address some annoying edge effects - and I thought that night vision

Hope you can be of help to a friend of mine who asked me to find out
information about his vision which he says "jumps".  I tried seaching
for information using the "subject" terms but did not find anything
like he discribes. He has asked his eye doctor (where he gets his

Eye doctor said that at my age it's time to worry about
bright sunlight -- wear sunglasses, she said.
Well, I'm already wearing glasses (for reading, computer
work, distance), and with shirts having only one smallish

Are there significant differences between cheap (e.g., Walgreen) and
expensive reading glasses? I specifically want to know if expensive ones
provide clearer close vision and less eye fatigue.

Dear AceMan,
Two questions:
1. When do your start your Ortho-K treatment, and
2. Could you contact me from my site:

I know this is a dumb question...
But do I need a prescription from my ophthalmologist to get a custom-made
pair of reading glasses? Or, can I just order one without a prescription?

A few weeks back NiteRider mentioned a "no-name" toric contact lens
that he described this way:
"I have tried quite a few contact lenses for astigmatism ... and some
no name that has serial

This has been happening for approximately 4 months.  Now it occurs on a
regular basis every morning.   On first awakening I am unable to open
my Rt. eye.   It is not stuck.. It is simply closed and will not open.
After a minute to five.. it opens and remains fine for the rest of the

Recently, a local newscast featured a story on a new type of eyeglass
prescription process.  This process involved a laser scanning the eye
and, using that data, generating a very accurate eyeglass lens
prescription which would take into account the various anomalies (I

I E-mailed the people at BE (http://www.beretainer.com/), and they said
that I'm not a candidate for CRT right now, but: "We are currently
doing trials with an astigmatic design. The earlier results are very
promising. Check back with us at the end of the year."

Does anyone know of a contact lens manufacturer who makes a "stock"
multifocal lens in a -12?  My eye doctor deals with one company who will
only make them custom ordered, for $150.  I am only trying out the lens, so
paying big bucks makes no sense.  Most of the manufacturers ...

What is the difference between these two Ciba products?  I used Aosept for
years until it was taken off the market.  Now supposedly it is back, but I
could only find Clear Care, which seems about the same.  When Aosept was
unavailable I used Ultracare, which I didn't like at all: ...

Is there such a thing as a drill mount / rimless frame toolkit?
Basically a tool for adjusting the small nut(s) that hold the
bridge/temples to the lenses.  Using small pliers to do the adjustment
seems to add the risk of scratching.