Difference between revisions of Severe myopia

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With severe myopia, there are some complications to be mindful of. This page explains them and provides you with guidance.

==Retinal detachment==

As your eyeballs elongate with increasing myopia, the retina—which is the light-sensing membrane at the back of the eye—becomes more tensioned. For severe myopes, the risk of retinal detachment is therefore markedly elevated[https://en.wikipedia.org/wiki/Retinal_detachment]. All the more reason to reverse direction.

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With the optical axes of your eyes nicely centered in a frame, round frames result in a constant thickness of the lens edge since all of the edge is at the same distance from the optical axis. This means that round lenses minimize thickness and hence weight for a given field of view.

You probably want a bit more field of view horizontally than vertically, which makes oval frames a good compromise at the cost of thicker ~~lens~~ edges on the ~~leftmost~~ and ~~rightmost sides~~. Avoid rectangular frames since the corners of the rectangles will be relatively far from the optical axis, making the lens edges there unnecessarily thick, ugly, and heavy.

You probably want a bit more field of view horizontally than vertically, which makes oval frames a good compromise at the cost of thicker edges on the left and right side of the lenses. Avoid rectangular frames since the corners of the rectangles will be relatively far from the optical axis, making the lens edges there unnecessarily thick, ugly, and heavy.

==View compression and accounting for vertex distance==

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 With severe myopia, there are some complications to be mindful of. This page explains them and provides you with guidance.
 ==Retinal detachment==
 As your eyeballs elongate with increasing myopia, the retina—which is the light-sensing membrane at the back of the eye—becomes more tensioned. For severe myopes, the risk of retinal detachment is therefore markedly elevated[https://en.wikipedia.org/wiki/Retinal_detachment]. All the more reason to reverse direction.
@@ Line 34: / Line 35: @@
 With the optical axes of your eyes nicely centered in a frame, round frames result in a constant thickness of the lens edge since all of the edge is at the same distance from the optical axis. This means that round lenses minimize thickness and hence weight for a given field of view.
-You probably want a bit more field of view horizontally than vertically, which makes oval frames a good compromise at the cost of thicker lens edges on the leftmost and rightmost sides. Avoid rectangular frames since the corners of the rectangles will be relatively far from the optical axis, making the lens edges there unnecessarily thick, ugly, and heavy.
+You probably want a bit more field of view horizontally than vertically, which makes oval frames a good compromise at the cost of thicker edges on the left and right side of the lenses. Avoid rectangular frames since the corners of the rectangles will be relatively far from the optical axis, making the lens edges there unnecessarily thick, ugly, and heavy.
 ==View compression and accounting for vertex distance==