A pterygium is a growth of abnormal tissue on the surface of the eye. This can cause problems with vision if it distorts the cornea. It may cause irritation and redness of the eye.
When the eye is irritated due to this condition, artificial tears may be prescribed for comfort. When the pterygium is inflamed (red and painful), steroid eye drops may be prescribed to reduce the inflammation. However, these eye drops only reduce discomfort associated with the presence of a pterygium.