Re: Have you ever wondered....
Posted: Thu 26 Mar 2009 8:17 am
I wonder if this was used in the development of the Aberometer?
Rather than looking at a light you look at a picture (well as best we can anyway) and it does more than topography, is measures all the aberations in the eye from the cornea to the retina and gives a load of numbers I think called Zerniki's, Coma and so on. This generated a picture of the eye chart showing what it thought I could see and what I should see with glasses and what I would see if everything was corrected.
First time I have seen a picture of an eye chart that I could show others that truly reflected how bad my vision is. It had all the doubling/tripling of the image, smudges, halos and wobliness we live with in one image.
They are very expensive and the place I was at only had it no loan for a few days to evaluate its abilities.
Rather than looking at a light you look at a picture (well as best we can anyway) and it does more than topography, is measures all the aberations in the eye from the cornea to the retina and gives a load of numbers I think called Zerniki's, Coma and so on. This generated a picture of the eye chart showing what it thought I could see and what I should see with glasses and what I would see if everything was corrected.
First time I have seen a picture of an eye chart that I could show others that truly reflected how bad my vision is. It had all the doubling/tripling of the image, smudges, halos and wobliness we live with in one image.
They are very expensive and the place I was at only had it no loan for a few days to evaluate its abilities.