The invention is directed to an implantable device to enable delivery of
drugs to the retina. The device minimizes stress to the retina by virtue
of its softness and smooth shape that conform to the retina. Drugs are
delivered by osmosis or by the device dissolving. It may be connected to
an externally mounted pump and drug reservoir that control the amount of
drug. It contains one or more holes that are positioned to deliver drugs
to the desired location. Drugs may stimulate the retina to enable vision
in blind patients. Drugs may be injected directly inside the eye by a
trans-scleral pump and valve drug delivery device.