Systems and methods for drug delivery to ocular tissue

An apparatus for delivering a medicament to ocular tissue, the apparatus comprising:

• a needle having a shaft defining a needle axis and a sharp distalmost tip;
• a needle guard at least partially surrounding the shaft of the needle, wherein the needle guard includes a distal surface, wherein the sharp distalmost tip of the needle is configured to extend through an opening in the distal surface, wherein the needle guard is moveable relative to the needle along the needle axis;
• and
• a dial coupled to one or more of the needle and the needle guard, wherein rotation of the dial is configured to alter a distance from the distal surface to the sharp distalmost tip.

A method of delivering a medicament to ocular tissue using a delivery device including a container configured to enclose the medicament, a needle having a sharp distalmost tip, and a needle guard at least partially surrounding a shaft of the needle, the method comprising:

• adjusting a distance from a distal surface of the needle guard to the distalmost tip of the needle;
• inserting, after adjusting the distance, the distalmost tip of the needle into the ocular tissue;
• positioning the distal surface of the needle guard against an outermost surface of the ocular tissue;
• and
• delivering a volume of the medicament to the ocular tissue via the needle.