In this paper ectopia lentis and congenital dislocated lenses are considered as synonymous terms for describing all lenses dislocated to a greater or lesser extent (luxations and subluxations) on the basis of developmental anomalies. The justification for adding to the already considerable literature on this relatively rare phenomenon rests mainly on the following points: 1. In view of the confusion surrounding the etiology, an anatomic classification of ectopia lentis has been set up which may help to clarify its clinical study. 2. Histologic observations have been presented which illustrate a form of the ciliary body apparently pathognomonic of ectopia lentis. 3. The largest series of cases of ectopia lentis heretofore reported from one hospital has been analyzed in order to emphasize certain clinical aspects and to evaluate surgical therapy for this condition.
The early writers did not differentiate between the various types of dislocated lenses. According to Celichowska, who
CLARKE CC. ECTOPIA LENTISA PATHOLOGIC AND CLINICAL STUDY. Arch Ophthalmol. 1939;21(1):124–153. doi:10.1001/archopht.1939.00860010140014