Physiological Aspects of Vision

The refractive apparatus of the eyeball normally (emmetropic) focuses sharp images on the retina (Fig. 4, first diagram) . (1) Myopia (Fig. 4, second diagram). Defects in vision occur if the eyeball is too long (length of eyeball = eyeball axial length) in relation to the lens’ focal power (= axial myopia) or if the diopteric strength of the ... ................
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