A white/yellow bump on left eye, on white part & slightly distorting iris for yrs.opticians say it's common.no probs so far..do they grow,cause probs?

Pingueculum : Your eye doc was likely referring to a yellowishish lesion adjacent to the cornea located on the conjunctiva Primarily at 3 & 9 o'clock positions, that represents elastic tissue changes with aging (solar elastosis). Often these small bumps are slightly raised & asymptomatic. They can get irritated. Artificial tears and sunglasses for protection advisabl &. If chronic irritation, may ---pterygium.