Posters

Comparison between swept-source OCT and UBM in the evaluation of iris tumours

Poster Details

First Author: R.Rodriguez Leor SPAIN

Co Author(s):    A. Gorro Miro   D. Lorenzo Parra   J. Caminal Mitjana   A. Serret Camps           

Abstract Details

Purpose:

To evaluate and compare swept-source OCT and UBM for iris tumors diagnosis.

Setting:

Hospital Universitari de Bellvitge is a tertiary center located in Barcelona (Spain). It services patients of adult age from the surrounding Barcelona area and complex cases referred from the rest of Catalonia and Spain. The ophthalmology service is divided into subspecialities.

Methods:

Retrospective study of consecutive cases of patients with iris tumors (excluding ciliary body tumors) which were evaluated between September 2015 and September 2017 with UBM and ss-OCT. Obtained images were analyzed by two independent observers. Statistic analysis included descriptive features, correlation indexes between observers and correlation indexes between techniques.

Results:

21 tumors were analyzed (11 nevus, 7 pigmented epithelium cysts and 3 melanomas). Both ss-OCT and UBM classified the same way the tumors according to their composition (solid vs cystic). There were differences between observers when comparing internal pattern, shape and posterior edge visualization in images obtained with ss-OCT and in shape in images obtained with UBM. Differences between techniques in qualitative features analysis were seen when comparing shape and internal pattern. There was a stronger correlation between observers when analyzing quantitative features obtained with ss-OCT. Quantitative features had no statistically significant difference when comparing techniques.

Conclusions:

Both UBM and ss-OCT are useful imaging techniques in order to diagnose iris tumors. UBM is better to avoid posterior shadowing and allows a better visualization and measurement of the tumor.

Financial Disclosure:

None