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OCT reveals vitreous abnormalities associated with optic disc pit maculopathy

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Optical coherence tomography can be used to preoperatively identify various vitreal abnormalities associated with optic disc pit maculopathy, a study by researchers in Greece shows. The finding suggests that the abnormal vitreous likely contributes to the macular elevation seen in such patients, the authors noted.

Panagiotis G. Theodossiadis, MD, and colleagues used optical coherence tomography (OCT) to examine the vitreous of 38 eyes in 38 patients aged 14 to 51 years. All patients had macular detachment associated with optic disc pit maculopathy, which surgeons treated with macular buckling, according to the study.

Investigators divided patients into two groups. The first group included 16 eyes that underwent OCT examinations at baseline and postoperatively. The second group included 22 eyes that underwent OCT exams after surgery only.

Overall, 28 of the 38 eyes (74%) showed vitreous abnormalities, including vitreomacular traction, vitreous strands over the optic disc and posterior vitreous detachment, according to the study.

In the first group, 10 of the 16 eyes showed vitreous traction preoperatively, which began at the optic disc and extended to the macula. However, none of these eyes showed such traction after surgery.

Of the remaining six eyes in the first group, four eyes showed either complete or partial posterior vitreous detachment, the authors reported.

In the second group, eight eyes showed vitreous strands over the optic disc, and five eyes had posterior vitreous detachment. The remaining nine eyes showed no vitreous involvement.

"Our observations support the view that the abnormal vitreous over the macula and optic disc is likely to play a role in the development of macular elevation in cases with optic disc pit. Prospective OCT studies could further assist to better understand the role of vitreous in this disease," the authors said.

The study is published in the September issue of Graefe's Archive for Clinical and Experimental Ophthalmology.