The crystalline lens system : its embryology, anatomy, physiological chemistry, physiology, pathology, diseases, treatment, operations and after-changes ; with a consideration of aphakia / by Louis Stricker.

  • Stricker, Louis, 1863-
Date:
1899
Catalogue details

Licence: Public Domain Mark

Credit: The crystalline lens system : its embryology, anatomy, physiological chemistry, physiology, pathology, diseases, treatment, operations and after-changes ; with a consideration of aphakia / by Louis Stricker. 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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    (See page 99). This avoids the confusion which formerly existed, since formerly the consecutive cataracts were designated as secondary—together with the 'nachstaar.' the cataract which develops subsequent to a cataract extraction, and which today are considered as true cataracta secundaria. The conception of the complicated cataracts is somewhat more gen- eral. Every consecutive cataract is also a complicated one. since it is a complication of the underlying causes which have led to the formation of a cataract. The cataract may, however, develop, without depending on any general disease, in an eve which is diseased and in such a manner as to in- ftuence the result of an operation or the probability of a cure. In such a case-we are dealing with a complicated cataract, which, however, is truly a primary formation, cataracta complicata. Thus, in consequence of glau- coma, a cataract may develop, cataracta glaucomatosa; and this, though a secondary cataract, would also be a complicated one. Where glaucoma develops in an eye previously, simultaneously, or after the grey cataract has developed, independently of the cataract. Tins should be designated as cataracta in oculo glaucomate affecto, and ought to be considered as :i primary cataract, but complicated. The stages of the development of cataract become of especial im- portance, owing to the choosing of the proper time for operation. Hence we are compelled to designate the various stages, cataracta incipiens, nondum matura. maturesence, matura and hypermatura. At times the volume of the cataract is dependent on the stage of its development. A very rapidly developing cataract has a larger volume than the normal cataracta tumescens; whereas, an over-ripe cataract frequently has a much smaller volume. This shrinkage often reaches a high degree when the cataract is a congenital one, or develops during the first years of life, or after an injury, especially when the lens becomes loosened from its zonular attachment. In cases where the anterior and posterior capsule almost touch each other, the cataract has received the name, cataracta mem- Iranacea. If the folded capsule covers a small, hardened, shrunken remains of a lens, simulating in its appearance a pea in its covering, which had been picked before it was ripe and then dried, one then speaks of a cataracta arido siliquata. Depending on their color, some special varieties have been called cataracta lactea; also, black-grey cataract, known as cataracta nigra. In the diagnosis of the consistency of a cataract, the color plays an important role. If a cataract, no matter what its variety may he. is complicated by posterior synechia, which bind it to the iris, it is known as cataracta accreta. If, however, the zonula is partially or completely ruptured, so