What are occult leakages from neovascularizations?
When angiography is performed, if specific, well-demarcated points of leakage are not revealed by the indicator dye entering the macula, the leakage is said to be occult, meaning hidden. Laser photocoagulation should not be done if the leakage points are occult, because the surgeon will not have well-defined aiming points for the laser.
