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DEVELOPMENTAL DEFORMITIES OF THE CRYSTALLINE LENS.

E. TREACHER COLLINS, F.R.C.S.
JAMA. 1908;LI(13):1051-1056. doi:10.1001/jama.1908.25410130007001a.
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In the observation brought forward in this paper I propose to show how several forms of congenital cataract are the outcome of arrests of development in the lens at different stages in its formation.

I am, naturally, aware that to attribute a condition to an arrest of development offers only a partial explanation of its etiology, leaving the cause of the arrest still to be accounted for. I think, however, I shall be able to demonstrate that a recognition of the stage at which the arrest of development has taken place, though we do not know the actual cause of the arrest, helps to a clearer insight as to the meaning of the appearances presented by congenital cataracts, and also affords valuable hints as to the most suitable operative measures to employ in their treatment.

For descriptive purposes I propose to summarize the development of the lens into the three

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