The Refractive and Motor Mechanism of the Eye |
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The Refractive and Motor Mechanism of the Eye (Classic Reprint) William Norwood Souter No preview available - 2016 |
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a₁ abduction action ametropia anisometropia appear asthenopia astigmia asymmetry axial b₁ binocular vision choroid ciliary muscle concave lens condition convergence convex lens cornea correcting lens corresponding crystalline lens cycloplegia cycloplegic cylindrical lens defect degree determined deviation diopter dioptric diplopia direction disk displacement distant vision divergence Donders effect emmetropia emmetropic equation esophoria examined eye eyeball false image fixation focal distance focal length foci glasses greater Helmholtz horizontal hyperopia hyperopic illumination increase Landolt lenses lesion light measured meridian of greatest meter method mirror movement muscular myopia nerve nodal point object oblique occurs Ophthal ophthalmometer ophthalmoscope parallel paralysis pencil placed plane point of reversal position posterior surface principal focus principal meridians prism pupil radius rays recti reflected Refraction and Accommodation refractive error relaxation result retina retinal image rotation schematic eye sclera skiascopy spherical lens staphyloma strabismus symptoms tion Tscherning usually vertical meridian visual lines wave