[Clinical course and differential diagnosis of lentiglobus posterior (case reports of 4 children)].

Unilateral lentiglobus posterior was diagnosed in 3 boys and 1 girl between the ages of 2 months and 4 years. This anomaly of the shape of the lens was associated in three patients with a posterior polar opacity and a secondary exotrophia of the eye. The other morphological findings were normal and symmetrical as compared with the fellow eye. Three of the children underwent surgery (anterior capsulectomy, lens aspiration and planned posterior capsulectomy with anterior vitrectomy by a corneoscleral approach). The functional results following the use of continuous-wear contact lenses and alternating occlusion therapy were less disappointing than with other types of congenital unilateral cataract. The prognosis seems to be analogous to amblyopia ex anisometropia. Lentiglobus posterior may be recognized more often if the slit lamp of the operating microscope is used routinely in examination of these infants. The differential diagnosis to other anomalies of the shape of the lens and other congenital cataracts is discussed.