Table 3.

Data volume of each classification problem in the third stage of the system.

Question number	Data volume
1	Body hypertrophy: 157; body nonhypertrophy: 109
2	Pseudopterygium: 46; nonpseudopterygium: 220
3	Head augmentation: 170; head not augmented: 96
4	Head and body congested: 218; head and body uncongested: 48
5	Progressive phase:203: nonprogressive phase: 36
6	Corneal clouding invading the pupil area: 338; corneal clouding not invading the pupil area: 13
7	Infiltrative or ulcerative phase: 272; perforated phase: 48; healing phase with a quiet lesion (observation phase): 32
8	Corneal neovascularization: 176; corneal neovascularization not present: 175
9	Keratoconus lesion margin clear: 149; keratoconus lesion margin blurred: 204
10	Lamellar staining: 120; punctate staining or no staining: 25; corneal stump: 33