00:00Grades of corneal opacity. Grade 1. Nebula, superficial opacities,
00:06often involving Bowman's layer and the superficial stroma. Grade 2. Macula,
00:11semi-dense opacity, Bowman's membrane and part of the anterior stroma are involved.
00:17Grade 3. Leucoma, dense white opacity, full thickness cornea is involved.
00:23Grade 4. Adherent leucoma, a full thickness corneal opacity with iris inclusion.