Hello. If the condition that you described has occurred over a span of years, it would be more likely to be due to a condition known as pterygium or pingecuela of the conjunctiva. Had this condition been of recent onset (few days), it could have been due to a condition of the liver known as jaundice.
Pterygium/ pingecuela is characterized by a yellowish small elevated lesion that occurs just adjacent to the cornea. It usually occurs due to excessive exposure to sunlight and environmental dust. It occurs more commonly in people having a lot of field work.
It is usually a harmless condition which requires no intervention unless there is excessive redness, burning or pain associated with it.
If the symptoms of burning and redness do occur then it would be a good idea to use lubricant eye drops along with an antihistamine eye drops as well. This would be best done under the supervision of an eye specialist after getting the eyes checked up in person.
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