Optical Coherence Tomography Findings in Idiopathic Macular Holes

Table 1

Modified Gass classification system of macular holes.

Stage	Description
Stage 1a	Yellow spot with loss of foveal depression, no vitreous separation
Stage 1b	Yellow ring with loss of foveal depression, no vitreous separation
Stage 2	Small full-thickness macular hole < 400 microns
Stage 3	Full-thickness macular hole > 400 microns, no vitreous separation
Stage 4	Full-thickness macular hole > 400 microns, complete vitreous separation