Corneoscleral trephining.
D003315:Cornea / Q000601:surgery*; D005123:Eye; D005901:Glaucoma / Q000601:surgery*; D006801:Humans; D013508:Ophthalmologic Surgical Procedures; D012590:Sclera / Q000601:surgery*; D014207:Trephining
CORNEA/surgery; GLAUCOMA/surgery; SCLERA/surgery