Influence of the cannulated vitrectomy system on the occurrence of iatrogenic sclerotomy retinal tears.

Purpose: To determine whether the use of the cannulated vitrectomy system decreases the incidence of sclerotomy-related retinal tears relative to traditional vitrectomy techniques.

Methods: Forty-one eyes of 77 patients in this study were randomly selected to undergo treatment with the cannulated port system.

Results: We demonstrated a statistically significant decreased incidence of sclerotomy tears in the cannulated group relative to the noncannulated group (1% vs.

Pseudohypopyon in unilateral acute idiopathic maculopathy.

Unilateral acute idiopathic maculopathy (UAIM) is a recently described condition in young adults consisting of rapidly progressive central visual loss, gray-white opacification of the outer retina, and serous detachment of the macula. Bull's eye pattern pigmentary changes may occur in the macula after resolution of the acute phase of the disease. A case of UAIM in which a shifting of subretinal inflammatory infiltrate was observed is reported.

Primary malignant melanoma of the optic nerve simulating a melanocytoma.

Primary malignant melanoma of the optic nerve head is an extremely rare tumor. We describe a patient with a pigmented optic nerve lesion that simulated a growing melanocytoma. The pigmented tumor slowly infiltrated the optic nerve causing disc edema, retinal venous congestion, progressive visual field loss, and eventually, loss of central acuity.

Clinical parameters predictive of enlargement of melanocytic choroidal lesions.

The authors followed up 197 melanotic choroidal lesions (62 categorised as benign naevi, 76 classified as suspicious naevi, 41 diagnosed as dormant melanomas, and 18 categorised as active melanomas) left untreated after their initial clinical documentation. Thirty-nine of these lesions enlarged during a five-year follow-up interval (cumulative proportion of lesions that enlarged = 26.2% by Kaplan-Meier method).