Abstract

Though extraction of the cataract in its capsule is the ideal operation, the procedure is more difficult and the danger of prolapse of the vitreous is greater than in the extracapsular procedure, as the protection of the posterior capsule is lost. Notwithstanding, this operation is being performed in all parts of the world in steadily increasing numbers of cases, and progress is being made in studying its technic and combating the difficulties. The writings of Elschnig have done much to popularize the operation, especially in Europe. In discussing the indications it is convenient to classify cataract into the following clinical types: mature, nuclear, nuclear and posterior cortical and intumescent (mother-of-pearl cortex) cataracts, phakosclerosis and hypermature, morgagnian and shrunken (disciform) cataracts. Of these, the nuclear and posterior cortical opacities are the most frequent immature cataracts. In general the cataract is ready for operation when the anterior chamber is sufficiently

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