Is this eye prescription high?

Question

20/150 for the right eye & 20/175 for the left. I also want to ask why some eyeglass lenses are thicker at the sides than at the middle, and some are just flat or have the same thickness at all sides?

In another format -1.50 & -1.75... :P

so what's the difference between 20/150 and -1.50?

Answer 1

First of all -1.50 is not the same thing as 20/150. And, -1.50 is not that strong.

Lenses to correct high degrees of nearsightedness are thicker on the edges (thin in the middle), while lenses to correct farsightedness (signified by a +4.50, for example) are thicker in the middle then on the edges.

Answer 2

Anything less than 4 diopters isn't that significant. A -1.50 prescription is mild. 20/150 just means that what a "normal" eye sees at 20 feet you see it as it were 150 feet away.

Answer 3

It means that at 20 feet from the chart YOU read what "normal" eyes see at 150 feet. Legally blind is considered 20/200, so yours seems bad =(

Answer 4

before i had laser sugery mine was 325/350- that was bad, almost legaly blind.
it might be the rx or the manufacturer of the lenses that determines how thick they are

Answer 5

SOME EYE GLASSES ARE CONVECTIONAL, AND OTHER ARE JUST CORRECTIONTIONAL, THE LENS DEPENDS TO THE TREATMENT OF THE EYE...