the white part of eye is known as sclera.
the white raised area in the sclera next to the black portion of the eye is due to innocous noninflammatory conditions of the eye..
known as pinguecula
or can be pterygium
both are harmless more common in those who work outside insunny environment.
if progressive or inflammed they need to be treated else can be left as such.
computer n mobile use is not associated with it.