Optic disc pit is a rare congenital anomaly of the optic disc and may be complicated by maculopathy with progressive vision loss. Optical disc pits are generally unilateral and sporadic, and the pathogenesis of maculopathy is not clear. Optical disc maculopathy (ODP-M) is a condition characterized by intraretinal, subretinal fluid, and retinal layers dissociation (retinoschisis). The origin of the subretinal fluid is controversial, and it is thought to be caused by liquefied vitreous, cerebrospinal fluid (CSF), leakage of the blood vessels in the base of the pit, and choroid. Although there is no consensus on its treatment, pars plana vitrectomy (PPV) alone or combined PPV, juxtapapillary laser photocoagulation, gas tamponade injection are the most frequently used methods in recent years. In this article, literature research was conducted on the possible mechanisms of the optic disc pit and the treatment modalities used.
18. Do differences in segmental angle of single level posterior lumbar fixation affect adjacent level biomechanics: cadaveric study of range of motion and optical disc strain
