President Trump is scheduled to be in Philadelphia on Tuesday, September 15, 2020 at The National Constitution Center (NCC) in the Independence Mall area. Increased police presence is anticipated in Center City throughout Tuesday afternoon and evening. Please allow extra time if you are going to Wills Eye. Please be advised of area street closures to vehicles beginning at 1:00PM on Tuesday 9/15. Pedestrian access will also be limited in the area. This is subject to change and area restrictions, which could widen, will be lifted once the President departs the NCC. There are also demonstrations planned for Tuesday 9/15 around Independence Mall as well as City Avenue.



A pterygium is a growth of scar-like tissue of the conjunctiva onto the edge of the cornea. They can appear on either side (or both sides) of the cornea, but they tend to occur more on the nose (nasal) side. They may increase in size over many years.


Small pterygia are common and often don’t cause significant symptoms. They can cause redness, irritation, tearing, difficulty with contact lens wear, poor cosmesis. If they get large, they can also affect the vision.


See risk factors below.

Risk Factors

Ultraviolet exposure. Welding is a job-related risk.


Peripheral and central corneal scarring, permanent decreased vision.

Tests and Diagnosis

Slit lamp examination is essential. Corneal topography can demonstrate induced astigmatism.


Lubrication with tear drops, gels and ointments; surgical excision if progressive and causing symptoms. Pterygia may recur after surgical excision.


Sunglasses and lubrication.

Pterygium Photos