what is the cause of pterygium
A pterygium can lead to severe scarring on your cornea, although this is rare. This condition needs to be treated since the scarring can cause vision loss. For minor cases, treatment usually involves eye drops or ointment to treat inflammation. In the most serious cases, treatment usually involves a corneal transplant.urgery is also done when a pterygium causes a loss of vision or a condition called astigmatism, which results in blurry vision. You can also discuss surgical procedures with your doctor if you want the pterygium removed for cosmetic reasons. There are a couple of risks associated with these operations.