ODTx drug delivery technology employed a surgically-implantable device containing one or more drug-agent containing micro-reservoirs.  At the time of a physician's choosing, a standard ophthalmic photocoagulator laser instrument can be used to direct laser light at a desired micro-reservoir.  The laser activation process enables the release of controlled amounts of drug into the posterior chamber of the eye, enabling the physician to control the timing and nature of intraocular therapy.  The ODTx approach was developed to treat ocular diseases such as macular degeneration, diabetic retinopathy or uveitis.  You can learn more about ODTx technology here.