. Pathology and bacteriology [electronic resource]. Ophthalmology; Eye; Eye; Bacteriology; Ophthalmology; Eye; Bacteriology; Eye. SYMMETRICAL MACULAR PIGMENTARY DEGENERATION 633 Symmetrical Macular Pigmentary Degeneration.â^In the typical cases of retinitis pigmentosa the degeneration begins in a circular area around the macula, slowly extending outwards, and not involving the central vision until the whole of the peripheral vision has been destroyed. Many. A n" K I lev. â ^ â,/ il Fig. 278.âSection through retina in a case of symmetrical macular pigmentary degeneration in association wit
. Pathology and bacteriology [electronic resource]. Ophthalmology; Eye; Eye; Bacteriology; Ophthalmology; Eye; Bacteriology; Eye. SYMMETRICAL MACULAR PIGMENTARY DEGENERATION 633 Symmetrical Macular Pigmentary Degeneration.â^In the typical cases of retinitis pigmentosa the degeneration begins in a circular area around the macula, slowly extending outwards, and not involving the central vision until the whole of the peripheral vision has been destroyed. Many. A n" K I lev. â ^ â,/ il Fig. 278.âSection through retina in a case of symmetrical macular pigmentary degeneration in association with cerebral degeneration. Shows complete dis- appearance of the rods and cones together with the inner nuclear layer. Migra- ^-â¢y^/' ; tion of the retinal pigment and disappearance of ganglion cells. Case recorded by Batten and Mayou, Proc. of the Roy. Soc. of Med., Ophth. Sec, VIII, 1915, 70. atypical cases have been described, some of which have undoubtedly been atrophy of the retina secondary to sclero- sis of the choroidal vessels, and not primary degeneration of the rods and cones. The presence of bone corpuscle- shaped patches of pigment in the retina is not pathog- nomonic of primary retinitis pigmentosa. Such patches. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Collins, E. Treacher (Edward Treacher), 1862-1937; Mayou, M. Stephen (Marmaduke Stephen), 1876-1934; Pyle, Walter L. (Walter Lytle), 1871-1921, editor; University College, London. Library Services. London : William Heinemann
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