ok, first of all u should learn what ocular albinism is when the eyes lack in pigment often causing them to be blue. it can also impair vision door causing someone to be near of far sighted, and/or not be able to focus correctly on something.
hints of ocular albinism in Simon.
Simon shows a lesser pigment in eye coloring (his eyes are blue)
he also has glasses tonen that he can not focus well on stuff
he may be farsighted because in the verplaats (Alvin and the chipmunks) Dave holds up 2 fingers and asks Simon to count them. he gos to guess 5 times before choosing 6.