Table 2.

Grading of the peripheral fundi in patients with congenital X-linked retinoschisis.

Grade	Notes	Ophthalmoscopy in the periphery	OCT in the periphery	Representative OCT images
Grade 1	No retinoschisis	Normal with/without silver-gray reflex	No schisis, no cystoid changes, and normal layer structure
Grade 2	Occult retinoschisis	Normal with/without silver-gray reflex	Minor schisis and cystoid changes in GCL/INL
Grade 3	Retinoschisis with retinal degeneration	Retinoschisis, shallow or bullous	Splitting in GCL and cystoid changes in INL
Grade 4	Retinal atrophy, most likely atrophic outer leaf of the retina	Retinal degeneration	Atrophy of the retina with no layer structure
Grade +D	Retinal detachment with/without retinoschisis	Retinal detachment with/without retinoschisis	Retinal detachment with/without splitting/cystoid changes in GCL/INL