Genetics in ophthalmology / Arnold Sorsby.

  • Sorsby, Arnold, 1900-1980.
Date:
1951
Catalogue details

Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Credit: Genetics in ophthalmology / Arnold Sorsby. Source: Wellcome Collection.

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    THE LENS Fig. 113.—Total congenital cataract. Pedigree showing dominant inherit¬ ance. {After M. Meissner (1933). Z. Augen/ieilk., 80, 48.) ПТ ma rrh Anterior and posterior polar cataracts Anterior polar cataracts may be minimal without any visual disturbance, or may take the variant form of pyramidal cataract with considerable visual dis¬ turbance; it may also be an aspect of other forms of congenital cataract, such as lamellar cataract. Adequate pedigrees of uncomplicated anterior polar cataract are not available. Fig. 114 suggests dominant inheritance. In posterior polar cataract, too, there is a considerable range in manifestation. The evidence for dominant inheritance is more convincing (Fig, 115). 1 9 ттшш E Affected. AíFected, right. Fjg. 114.—Anterior polar cataract. Pedigree suggestive of dominant inheritance. {After A. Vogt (1931). Lehrbuch und Atlas der Spaltlampenmikroskopie, 2te Auf!. Vol. 2, p. 402. Berlin; Springer.) ? □ □□□□óóùùó □□ • p □ □ Ò □ Ò □ Ò Fig. 115.—Posterior polar cataract. Pedigree showing dominant inheritance. {After L. Ziegler and J. M. Griscom (1915). Trans. Amer. Ophthal. Soc., 14, 356.) Suture cataract Anterior axial embryonal cataract hardly falls within the pathological range. It has been observed over four generations. Stellate cataract, involving both Y sutures, is also of no great clinical significance. It has been observed over two generations. 130