Pathologies of the cornea and anterior segment

Neovascularization is the growth of new vessels in the periphery of the cornea in patients frequent use of lenses ("daily" or "monthly" contact lenses - hydrophilic).

It is probably caused by the sharp decrease in oxygenation (hypoxia) and the chronic trauma of the peripheral zone of the cornea (limbus), leading to the growth of new vessels, due to the release of angiogenic mediators.

Neovascular growth of these vessels, lower than 2 mm is acceptable, but if they extend more than 2 mm into the cornea, the use of contact lenses should be immediately discontinued, otherwise, pathological conditions will be developed.