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Biotech / Medical : Summit Technology (BEAM) -- Ignore unavailable to you. Want to Upgrade?

To: Walter in HK who wrote (1187)	4/11/1999 9:51:00 PM
From: Joe	Respond to of 1386

Paul I did not mean to imply that hyperopia and presbyopia were the same. It is just that presbyopia manifests itself at an earlier age in hyperopes than it does in emmatropes or perfectly sighted individuals. In myopes, presbyopia effects start troubling the patient at an even later age. It has to do with one's ability to accommodate or bring near objects into focus. When a hyperope is young, he has the ability to accommodate to read, but he must accommodate more than a myope. As the natural lens hardens, the hyperope starts losing the ability to accommodate at an earlier age that a myope. Perhaps that was a little clearer. Now if the 35 year old hyperope is treated and the final correction is slightly myopic, then he may not need readers until he is 40 to 45 years of age. After that, the only options are monovision - one eye is made myopic specific to read and the other eye is used for distance vision. This is common with contact lens wearers. There is one other possibility, and that is multifocal correction. The ATCI technology has some possibilities there. Joe