**2.7 Optic pit**

Optic pit is a kind of excavated optic disc anomaly. An optic pit is a depression of the optic disc surface that is often gray or white. It is located infero-temporally, and associated with a mild visual field defect (usually paracentral or arcuate) (**Figure 24**). A reduction in RNFL thickness in the excavated sector of the affected optic disc can be seen in peripapillary OCT (**Figure 25**). Serous detachment of the macula develops in 25–75% of optic pit cases, possibly related to liquefied vitreous entering the subretinal space through communication between the optic pit and the macula [28, 29].

#### **Figure 24.**

*Fundus photography of both eyes: a yellow-whitish excavation at the inferotemporal rim of the optic disc of right eye. The left optic disc seems to be normal.*

#### **Figure 25.**

*A significant reduction in RNFL thickness in the temporal sector of right eye is visible. Coloboma is clearly seen on vertical OCT scan as well as horizontal scans through right optic pit.*
