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Refraction through a Plate Prisms Refracting Angle Angle of Mini
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ametropia amount amplitude of accommodation astigmatism atropine axes cause ciliary muscle coincide concave lens conjugate focus convergence convex lens cornea correcting lens cylinder degrees of myopia deviation dioptres dioptric value diplopia distant vision divergent effort of accommodation emmetropia emmetropic eye equal error of refraction focal distance focal length focal plane focussed front fundus glass homatropine horizontal hyper hypermetropia hypermetropic eye illuminated area image formed incident ray increase index of refraction infinity inverted image leave the eye lenses less luminous macula magnification measure metre angles moved movement myopia myopic eye nearer nodal point observed eye opacities ophthalmoscope optic axis optic centre parallel rays paralysis pass patient plane mirror point of reversal position posterior surface principal focus prism produced punctum proximum punctum remotum pupil reflected refractive power relative accommodation retina retinal image retinoscopy right angles seen sharp image source of light spherical squint strabismus visual acuity visual axis vitreous