CONTRACTILE OPTIC DISK AND PERIPHERAL AVASCULAR RETINA IN A CASE OF MORNING GLORY DISK ANOMALY

To report a rare case of morning glory disk anomaly with a contractile optic disk and a peripheral avascular retina along with detailed spectral domain optical coherence tomography characteristics of the contractions.

Serial fundus photographs and optical coherence tomography images were taken to study the characteristics of optic disk contractions. Fundus fluorescein angiography was performed to delineate the peripheral avascular retina in the same eye.

A 9-year-old boy presented to us with morning glory disk anomaly in the left eye. He had contractile motions of the optic disk around two to three times in a minute, with each contraction lasting for 4 seconds to 5 seconds. Serial spectral domain optical coherence tomography images could depict an anterior contraction of the optic disk along with the surrounding peripapillary staphyloma with no evidence of any subretinal fluid. Fundus examination of the left eye also suggested the presence of an avascular retina temporally, which was confirmed on fundus fluorescein angiography.

Our report provides detailed spectral domain optical coherence tomography images through the optic disk in morning glory disk anomaly during various phases of optic disk contractions. It also presents a second rare association of a peripheral avascular retina in the case.