A peculiar form of hereditary congenital cataract / by E. Nettleship and F. Menteith Ogilvie.

  • Nettleship, Edward, 1845-1913.
Date:
[1906?]
Catalogue details

Licence: In copyright

Credit: A peculiar form of hereditary congenital cataract / by E. Nettleship and F. Menteith Ogilvie. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    varioties. It is generally large eiiougli to about block the ordinary—say 4 imn.—pupil. It is always double, and, without exception, accurately synnnetrical in the two eyes. The earliest age at which it has been seen is ten years and the latest eighty-two, and the condition seems to be absolutely stationary. There is, however, some reason to think that the cataractous branch of the family has an unusual tendency to prmsenile lenticular change in the common form of scattered dots and small smudgy stria). Such changes were noted in at least twelve of the affected division; si.x of these have also the typical family cataract, whilst of the other six, who hav'e only the scattered changes, three are the adult children of a father who him- self has the typical cataract. In three of the above twelve there was also a single, defined, pin-point o])acity somewhat deep in the lens, but in front of the typical cataract disc, and placed up and in from the pole ; it was liinited to the left eye in all three cases. Mr. Ugih'ie finds the following minor varieties of the peculiar family cataract; (1) In what may be called the most typical variety the disc of oj)acity is of steel-grey colour by focal light and almost homogeneous in texture, though often showing some speckling or stippling ; it is so dense that the fundus is either invisible or at best only dimly seen through it. Quite half the cases are of this variety, viz., JV, 1, 6, 10; V, 2, 9, 25; VI, 31, 38. (2) In another variety the opacity, though like the above in size, shape, and clearness of outline, is so extraordinarily faint that it may easily escape detection even when the pupil is dilated, the fundus being readily visible through the translucent disc (Cases 31, 42 ; and VII, 8). (3) In a third variety the diameter of the opacity is rather less, its outline, though circular, slightly irregular or eroded, and the texture, though very translucent, is at the same time rather granular (Cases V, 11, 26, 28). Cases VI, 32 and 33, are intermediate between the above forms. The differences above described have no relation to age, nor is the same variety always present in parent