Intraocular pressure may be lowered by allowing drainage of aqueous humor from within the eye to the following routes: (1) filtration through the sclerotomy around the margins of the scleral flap into the filtering bleb that forms underneath the conjunctiva, (2) filtration through outlet channels in the scleral flap to underneath the conjunctiva,(3) Filtration through the connective tissue of the scleral flap to underneath the conjunctiva. Into cut ends of Schlemm's canal. (4) aqueous flow into cut ends of Schlemm's canal into collector channels and episcleral veins (5) into a cyclodialysis cleft between the ciliary body and the sclera if tissue is dissected posterior to the scleral spur.
Trabeculectomy
Frontal sinus trephination
Head transplant
Astragalectomy
Eyelid revision
Iridodonesis
Iridectomy
Vibroacoustic therapy