Aniseikonia Testing

[go_hercules]

In doing some aniseikonia testing, I would like to try what I have seen referred to as "SIZE LENSES". These are lenses which magnify but do not refract. For the life of me I have not been able to find a set. Does anyone know where to find them or if they go by a different name? Thanks.

[mariannie]

I've also done the testing with a patient and had our lab fabricate a 5% size lens. The magnification is controlled with thickness, material, curves. I have no idea where to get actual size lenses, but probably cheaper just to have one made to specifications, assuming you know what magnification you need.

[Robert Martellaro]

One workaround, if you have a trial lens set with biconvex plus, is to piggyback a +20 and -20, for about 4% magnification when the convex side is on the front.

[go_hercules]

I would like to get a set if possible so I can use them like trial lenses. That way I could try different ones side by side.

I've also done the testing with a patient and had our lab fabricate a 5% size lens. The magnification is controlled with thickness, material, curves. I have no idea where to get actual size lenses, but probably cheaper just to have one made to specifications, assuming you know what magnification you need.