The Refraction and Accommodation of the Eye and Their AnomaliesPentland, 1886 - 600 pages |
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Page x
... Hyperopia -- Typical Hyperopia- Convergent Strabismus in Hyperopia - High Degrees of Hyperopia - Vision of Hyperopes - Symptoms and Diagnosis of Typical Hyperopia - Latent— Manifest - Total Hyperopia - Visual Troubles in Hyperopia ...
... Hyperopia -- Typical Hyperopia- Convergent Strabismus in Hyperopia - High Degrees of Hyperopia - Vision of Hyperopes - Symptoms and Diagnosis of Typical Hyperopia - Latent— Manifest - Total Hyperopia - Visual Troubles in Hyperopia ...
Page 98
... hyperopic eye . Hence an eye that is hyperopic to this degree is 22.83-20-035 = 2.79 millimetres shorter than an emmetropic eye . The same result is attained with formula VIII . c , which gives = 2.79 millimetres as the difference in ...
... hyperopic eye . Hence an eye that is hyperopic to this degree is 22.83-20-035 = 2.79 millimetres shorter than an emmetropic eye . The same result is attained with formula VIII . c , which gives = 2.79 millimetres as the difference in ...
Page 103
... hyperopic eye with that of the curval hyperopia , the latter is found to be the greater . Hence the retinal image must be larger in the latter case than in the former . An example of curvature - hyperopia is furnished by an eye which ...
... hyperopic eye with that of the curval hyperopia , the latter is found to be the greater . Hence the retinal image must be larger in the latter case than in the former . An example of curvature - hyperopia is furnished by an eye which ...
Page 134
... Hyperopia . The simplest means of procuring convergent rays for the hyperopic eye , is the convex lens . We know , in fact , that , by rendering them convergent , a convex lens brings parallel rays together at its focus . Definition ...
... Hyperopia . The simplest means of procuring convergent rays for the hyperopic eye , is the convex lens . We know , in fact , that , by rendering them convergent , a convex lens brings parallel rays together at its focus . Definition ...
Page 135
... hyperopia will be R , or r dioptries . FIG . 62 . How is the distance between the hyperopic eye and its farthest point to be ascertained ? In myopia we had only to bring a small object toward the eye until it was seen distinctly . It ...
... hyperopia will be R , or r dioptries . FIG . 62 . How is the distance between the hyperopic eye and its farthest point to be ascertained ? In myopia we had only to bring a small object toward the eye until it was seen distinctly . It ...
Other editions - View all
The Refraction and Accommodation of the Eye and Their Anomalies Edmond Landolt No preview available - 2023 |
The Refraction and Accommodation of the Eye and Their Anomalies Edmond Landolt No preview available - 2018 |
Common terms and phrases
acuteness of vision adapted ametropia amplitude of accommodation angle anisometropia asthenopia astigmatism atropine axis becomes binocular vision centimetres centre choroid ciliary muscle concave glass convex glass convex lens cornea correcting-glass correction corresponding crystalline lens determine diminished dioptric apparatus dioptric system dioptries diplopia direction distant vision divergent Donders dynamic refraction effort of accommodation emmetropia emmetropic eye equal focal distance formula fundus Hence horizontal hyperopia hyperopic hyperopic eye increase index of refraction infinity inverted Landolt latter lenses less lines of fixation luminous point luminous rays maximum medium metre metre-angles millimetres mydriatic myopes myopia myopic eye nearer nodal point object observed obtain Ophth ophthalmoscope optical optometer patient placed posterior principal focus principal meridians principal point prism produced punctum proximum punctum remotum pupil range of accommodation refractive power refractive surface retina retinal images second principal situated spasm spherical static refraction strabismus tion vertical visual acuteness
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