i would definitely have his eyes checked by an ophthamologist (vs. an optometrist). i have migraines and i find it really scary when my vision is affected. i was diagnosed though by going to an ophthamologist. i'm sure you were looking for more but i hope this helps a little bit. good luck.
11 year old son gets strange vision where things look small and far away like looking thru binocs backwards. i myself had this on occassion when growing up and even during adult life. when young it started after i had a fever and the same is true for my son. it does not hurt and nothing is blurry but everything seems small and farther away than it really is. it is a strange and scarry feeling. . . . . any ideas?