The causes and prevention of blindness / by Ernst Fuchs ; translated by R. E. Dudgeon with a few notes by M. Roth.

  • Fuchs, Ernst, 1851-1930.
Date:
1885
Catalogue details

Licence: Public Domain Mark

Credit: The causes and prevention of blindness / by Ernst Fuchs ; translated by R. E. Dudgeon with a few notes by M. Roth. Source: Wellcome Collection.

Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)

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    T4 RETINITIS PIGMENTOSA. clinic in the course of a considerable period. I give here some of the records on this subject i Authors. Cases of retinitis pigm FlEUZAL* ... 21 MOORENf ... — Leber J ... 66 Saemisch § ... 60 From consanguineous marriages ... 8 ... 18 ... • •• 15 ••• Per cent. 33 33 27 25 These statistics are corroborated by numerous single ob- servations. Thus, for example, FlEUZAL has the following: In Paris there is a married couple who are cousins. They have had fourteen children ; of these eight died in earliest infancy, so that nothing is known respecting the condition of their eyes. All the other six were either blind or very weak-sighted. In some of them FlEUZAL was able to ascertain the existence of retinitis pigmentosa. In order to make these statistics available as evidence, they must be compared with the proportion of consanguineous marriages to other marriages. I shall take the data for this point from the French statistics, which for many years have specially recorded the marriages of blood-relations. I shall only consider here marriages between nephew and aunt, uncle and niece, and between the children of brothers or * Didionnaire encycloft. des sciences vied, de Dechambre. T. XIX. Art. Consanguinity. t FiinJ Lustren ophthalmologischer Wirksamkcit, Wiesbaden, 1882, p. 219. X Handbuch der Attgenheilk. von Grafe-Samisch. Vol. V., p. 654. § Derigs, Ueber Retinitis pigmentosa, Bonn, 18S2, p. 21.