Central retinal vein occlusion in young: A rare case report of undifferentiated connective tissue disease as an etiologic diagnosis

A 32-year-old female presented with sudden, painless visual disturbance in her left eye (LE) since 3 months. Her visual acuity was 20/20 in both eyes. Fundus examination in LE revealed superficial retinal hemorrhages in all quadrants and venous tortuosity, suggestive of non-ischemic central retinal vein occlusion. Further history taking revealed a history of stroke in the family and was therefore advised for thrombophilia profile. Thrombophilia profile and autoimmune workup directed us to the probable diagnosis of connective tissue disease (CTD). Interestingly, the hematologic workup did not fulfill the criteria required for the diagnosis of classical CTD.