IPT has been shown, time after time, to improve transport of medications across the cell membranes and into otherwise impermeable tissues throughout the body. This would be an entirely new strategy for getting drugs into the eyes. Eye specialists may develop empirical methods that intentionally use these transport opportunities. The US insulin study group of the 1930s reported improvements in vision after injection of small amounts of slow insulin into the body. Leaky' retinas have stopped leaking after two to three injections, but treatment is usually continued for three weeks.
Injection is shallow.
It could be that IPT will be even more effective, especially when combined with appropriate medications. This mention of the stopping of retinal leaking could be very significant. Laser photocoagulation can seal the leaks, but at the cost of damaging more retinal area. Some other methods are being tried, including antiangiogenic drugs, sub-macular surgery, and laser photodynamic therapy. All of these methods are expensive, requiring advanced technologies out of the reach to most human beings who need help.