Abstract

SA.09.03

Spectral optical coherence tomography of surgically closed macular holes

Michalewska Z., Michalewski J., Nawrocki J.
Klinika Okulistyczna "Jasne Blonia", Lodz, Poland

Objective: The aim of this presentation is to evaluate retinal structure after surgery for macular hole and its’ influence on final functional outcomes using high speed, high resolution spectral optical coherence tomography (SOCT).
Methods: 68 eyes of 60 patients with full-thickness macular holes were included into our study. All patients underwent pars plana vitrectomy with trypan blue staining and ILM peeling. Patients were examined with SOCT, that enabled achieving 6µm axial and 12-18µm transverse resolution and three-dimensional pictures of the retina.
Results: Macular hole closure types were divided into 4 groups: U shape, V shape, irregular and flat open. Following retinal abnormalities were observed in postoperative scans: Photoreceptor defects, cysts in outer retinal layers, nerve fiber layer defects, lesion of all retinal layers, photoreceptor layer lesions, photoreceptor layer irregularities, hyperreflective membrane as outer retinal layer and RPE defects. Exact photoreceptor defect count on a three- dimensional image was possible. Retinal thickness in fovea was measured.
Conclusions: Enhanced resolution of SOCT enabled visualization of retinal defects after macular hole surgery. 3D examination enabled exact count of photoreceptor defects. Postoperative visual acuity was best in eyes with U shape closure, no photoreceptor layer defects and correlated positive with retinal thickness in fovea.

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