Sub-tenon drug delivery

A method of delivering a drug to a human eye, comprising the steps of:

• inserting a cannula below a Tenon's capsule and above a sclera of said human eye at a point posterior to a limbus of said eye, said cannula comprising:
• a distal portion having a radius of curvature substantially equal to a radius of curvature of a globe of said human eye;
• a proximal portion;
• and
• a bend separating said distal portion and said proximal portion,
• wherein a tangent of said distal portion at said bend is disposed at an angle of no more than about 56 degrees with respect to said proximal portion;
• injecting a drug formulation through said cannula to form a drug depot on an outer surface of said sclera.

A cannula, comprising:

• a hub for removably coupling to a syringe;
• a proximal portion;
• and
• a distal portion having a tip, an orifice proximate said tip, and a radius of curvature substantially equal to a radius of curvature of a globe of a human eye, wherein a part of said distal portion proximate said tip is made of plastic.