A new method to assess foveal morphology with optical coherence tomography

PURPOSE

To measure foveal morphology using optical coherence tomography (OCT).

METHODS

Three examiners classified normal subjects and patients with macular edema and epiretinal membranes from a normative database (299 OCT scans) and a study sample (80 OCT scans) on the basis of the foveal depression appearance (reference classification). The following parameters were measured for each OCT scan: Central Foveal Thickness (CFT), Central Subfield Thickness (CST), Central Subfield Volume (CSV), Centrofoveal Index (CI), Parafoveal Index (PI), and Foveal Indices (FI1, FI2, FI3). Foveal depression of OCT scans in the study sample were classified based on the values of OCT parameters using Bayesian statistics (test classifications).

RESULTS

Agreement between reference and test classifications was of 70% for CFT, 58.7% for CST, 60% for CSV, 80% for CI, 72.5% for PI, 88.7% for FI1, 96.2% for FI2 and 97.5% for FI3.

CONCLUSIONS

IF3 seems to provide a reliable measure of the foveal morphology.

Necrotic uveal melanoma with orbital inflammation

PURPOSE

Extraocular extension of uveal melanoma can be accompanied by proptosis and signs of orbital inflammation but this clinical presentation is an uncommon feature if the tumor is solely intraocular.

METHODS

Case report.

RESULTS

The authors describe a patient with a medium-sized necrotic uveal melanoma, without extraocular spread, presenting with the clinical picture of orbital cellulitis.

CONCLUSIONS

The ophthalmologist needs to be aware of this uncommon presentation of uveal melanoma, and not assume the presence of proptosis and orbital inflammation as signs of extraocular extension.