A hole in the eye is not specific as to the part. I suspect it is either a hole in the retina with may or may not require treatment or a hole in the macula which may or may not require treatment. You need to get specifics from the opht;halmologist that examined him. Neither are unusual problems.
JCH MD
No, they are not the same, here is some info I found about Pterygium:
Overview
A pterygium is a non-cancerous growth of the clear, thin tissue that lays over the white part of the eye (conjunctiva). One or both eyes may be involved.
Causes
The cause is unknown, but it is more common in people with excess outdoor exposure to sunlight and wind, such as those who work outdoors.
Risk factors are exposure to sunny, dusty, sandy, or windblown areas. Farmers, fishermen, and people living near the equator are often affected. Pterygium is rare in children.
Symptoms
The primary symptom of a pterygium is a painless area of elevated white tissue, with blood vessels on the inner or outer edge of the cornea.
Tests & diagnosis
A physical examination of the eyes and eyelids confirms the diagnosis. Special tests are usually not necessary.
Treatment
No treatment is required unless the pterygium begins to block vision -- then it should be removed with surgery. Wear protective glasses and a hat with a brim to prevent the condition from returning.
Prognosis
Most pterygia cause no problems and do not need treatment. If a pterygium affects the cornea, results are usually good after it is removed.
Complications
A pterygium can return after it is removed.
When to contact a doctor
People with pterygium should be seen by an ophthalmologist each year, so that the condition can be treated before it affects vision.
Call for an appointment with your ophthalmologist if you have had a pterygium in the past and your symptoms return.
Prevention
Protecting the eyes from ultraviolet light may help prevent this condition.
I would say they are definitely not the same, and I sure would discuss this would an eye specialist (Ophthalmologist)