A bilateral congenital pits of the optic nerve head. A case report

Purpose The authors report a patient with a multiple optic nerve head pit Methods A bilateral optic nerve head pit was found in a woman patient of 55 years old without macular retinal detachment. An 8-microm axial resolution prototype spectral domain optical coherence tomography (OCT) and stereo fundus photography were used to observe the patient. The visual acuity remained stable at 20/20. Results The pits of the optic nerve head is a congenital anomaly of the eye and it is attributed to incomplete closure of the foetal fissure.The prevalence is 1: 10000 eyes. This depression is frequently situated in the temporal or infra-temporal region of the optic disc. There is usually only one pit per optic disc, although two or three occasionally occur. Optic pits are unilateral in 85-90% of cases. Visual acuity usually remains unaffected unless the patient develops a serous non-rhegmatogenous retinal detachment of the macula (over 60% of eyes). Visual fields characteristics of pits were found in our patient. Conclusion High resolution OCT technology and appropriate imaging software is able to observe changes of the micro architecture of the optic nerve as this unusual pits bilateral.