Device, system and method for treating a corneal tissue

A device for delivering a drug into a cornea, comprising a body, wherein the body comprises

• an internal cavity and a first aperture communicating with the internal cavity, wherein the first aperture is conformed or conformable to hermetically adhere to a perimeter of a corneal surface;
• a second aperture to introduce the drug in the internal cavity,
• the device comprises a mask supported by the body at the first aperture and the mask is adapted, under operative conditions, to adhere to a portion of the corneal surface, preserving predetermined areas of the portion from a contact with the drug, wherein the mask comprises a biocompatible material disk comprising a plurality of through openings having opportunely variable size across the biocompatible material disk to achieve a corresponding variable spatial concentration of the drug across a corneal tissue;
• wherein the body further comprises:
• an upper side opposite the first aperture;
• an internal annular abutment disposed within the internal cavity at the upper side;
• and a removable cover couplable to the upper side;
• wherein a planar electrode grid is supported on the annular abutment when the cover is coupled.