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Evaluation of pterygium by anterior segment optical coherence tomography

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Session Details

Session Title: Presented Poster Session: Miscellaneous and Infections

Venue: Poster Village: Pod 3

First Author: : T.Yasar TURKEY

Co Author(s): :    M. Batur   E. Sevin   S. Tekin   M. Demir     

Abstract Details


To evaluate the ability of anterior segment optical coherence tomography (AS-OCT) to visualize the anatomic features of pterygium and its invasion of the corneal layers, and to assess the utility of AS-OCT in the management of pterygium.


Yuzuncu Yıl University Medical Faculty Department of Ophthalmology, 65080, Van, Turkey


Seventy-five eyes of 54 patients diagnosed with pterygium between September and December 2016 were included. All subjects underwent full ophthalmologic examinations including AS-OCT. The limbus-apex distance, vertical height at the limbus, invasion of the Bowman’s and stromal layers, and other morphologic structures of the pterygium tissue were analyzed.


Mean age of the patients was 49.67±16.49 (20-85) years. The mean apex-limbus distance was 2548.37±1026.32 (933-4597) μm, and the mean vertical height at the limbus was 4843.89±1374.10 (1740-7784) μm. A space was observed beneath the pterygium tissue in 44 (58.67%) of the patients. The mean width and height of this space was 1756.33±560.22 (1009-3095) μm and 231.70±85.88 (109-465) μm, respectively. Invasion of Bowman’s layer was apparent in 74 patients (98.67%) . A hyperreflective layer was observed beneath the epithelial layer at the edge of the pterygium apex in 31 patients (41.33%).


AS-OCT enables measurement of the actual size and thickness of pterygia, assessment of invasion of the Bowman’s and stromal layers of the cornea, and evaluation of the structure of pterygium. Over half of our pterygium patients exhibited space beneath the pterygium which might be important for the surgical planning.

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