Therapy and procedure
I. External eye surgery
A. Ptosis surgery
B. Other eye lid surgery
C. Pteryguim surgery
D. Lacrimal surgery
E. Lacrimal punctum closure ( obstruction )
II. Internal eye surgery
A. Ocular surface
1. Corneal transplantation
2. Refractive surgery (LASIK, LASEK)
B. Cataract
C. Glaucoma
D. Vitrectomy