what is the focal length of myopic and hypermetric eye
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myopic eye;
The average eye is about 24mm. long, with the distance of the crystalline lens to the retina being somewhat less. In an eye with no refractive error the optical system will focus light directly on the retina. If you calculate the focal length of a 58.7D system you will find it is not 24mm but really 17mm.
hypermetric eye;
About 1 mm shortening of the antero-posterior length of the eye results in about 3 Dioptres (D) of hypermetropia. Curvature hypermetropia: Curvature hypermetropia is that condition in which curvature of the cornea, lens or both is increased (flatter) than the normal, resulting in change in refractive power of the eye
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24mm by 58.7 system this is because center of eye len system is 17mm
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