ESCRS - PO267 - Anterior Segment Optical Coherence Tomography In Keratitis

Anterior Segment Optical Coherence Tomography In Keratitis

Published 2022 - 40th Congress of the ESCRS

Reference: PO267 | Type: Free paper | DOI: 10.82333/qsj5-h062

Authors: Dhouha Gouider* 1 , Mariem Abdelhedi 1 , Haifa Alioua 1 , Yassine Farah 1 , Hassen Azri 1 , Afef Maalej 1 , Asma Khallouli 2

1military hospital Tunis,Tunis,Tunisia, 2military hospital Tunis,Ariana,Tunisia

Purpose

To evaluate the use of spectral domain optical coherence tomography (SD-OCT) imaging in different types of keratitis to demonstrate the feasibility, diagnostic effectiveness, and limitations of this imaging modality.

Setting

Department of ophthalmology, military hospital, Tunis, Tunisia

Methods

A prospective observational study included 50 eyes (35 patients) with presumed keratitis. Slit-lamp examinations and AS-OCT were performed. A standardized scanning protocol was used. The thickness of the infiltrate, when present, and corneal thickness in any area of thinning and any surrounding edematous areas were measured. hen we studied then different characteristics of each type of keratite according to the OCT aspect. Thus it provided us with objective evidence of therapeutic effectiveness.

Results

Thirty-one eyes presented with epidemic keratoconjunctivitis (EKC). Two eyes presented with proven herpetic keratitis. Two eyes presented with proven microbial keratitis (1 fungal and 1 bacterial).  On AS-OCT, keratoconjunctivitis was presented like hyperreflective lesions with sharp edges associated with rupture of Bowman's layer, localized epithelial thickening, stromal thinning, and decreased pachymetry. Areas of stromal thinning had overlying hypertrophic epithelium. In the other infectious keratitis, AS-OCT showed, in the acute phase, hyperreflective bands in the corneal stroma with increased corneal thickness. In the chronic phase, an epithelial hyperplasia was associated with corneal surface irregularities and stromal thinning.

Conclusions

AS-OCT scanning can be used along with slit lamp examination to quantify and objectively follow keratitis.