PURPOSE  Morning Glory syndrome is a congenital optic disc anomaly. Retinal detachment has been reported with this syndrome occasionally. To analyse the clinic manifestations, management and prognosis of nonrhegmatogenous retinal detachment in morning glory syndrome.
METHODS  A case ofmorning glory syndrome associated with retinal detachment caused by communication between the subretinal and subarachnoid space of the left eye was reported. The features of B-scan ultrasonography preoperative and postoperative OCT,、fundus fluorescein angiography(FFA) of  the involved eye were reviewed. Vitrectomy and photocoagulation were applied.
RESULTS  A 24-year-old female complained with abruptly decreasing visual acuity of the left eye for almost 6 months. LE visual acuity is HM. B-scan ultrasonography showed total retinal detachment. FFA revealed fluorescein leaked through the anatomic optic disc defect. Indirect ophthalmoscopic examination found no retinal holes. Careful radial OCT, scanning 360 degrees around the excavation found no retinal breaks. Vitrectomy with silicon oil injection and photocoagulation of the inferior optic disc rim were applied, postoperative OCT and FFA found no communication between the subretinal and subarachnoid space again. Retinal detachment was not recurrent during 9-month follow-up. LE best corrected visual acuity recovered to CF.
CONCLUSION  It is difficult to repair the detachment when retinal breaks were not detected clinically in morning glory syndrome. 360 degrees radial OCT around the optic disc is very helpful to reveal whether there is retinal break or not. Vitrectomy is effective to reattach the retinal detachment and the prognosis is good.