Did your son's pediatrician check the vision on the well baby exam? At age 7 it maybe hard to correct. He may also have amblyopia which get more difficult to correct after about age 5.
Dr. O.
Yes, the Ped checked my Son's vision and found nothing unusual. However I am not sure how thourough that test was.Due to the eyes looking so normal and the fact that he has never complained about poor vision, I thought everything was fine and haven't ever thought he had problems. We are trying to get someone a bit sooner than 2nd June to examine. Could you tell me what amblyopia is?
Cataracts aren't visible without optical equipment so a regular pediatrician is unlikely to have spotted it without a proper eye exam (is that what you meant?). Congenital means he was born with it so if that were the case, I wouldn't worry about waiting another couple of months. Most cataracts take years to develope, albeit usually older people get them in their 50s or much later; obviously a 5-year old is somewhat different.
If you're still worried, go back to the optomitrist - if (s)he can see the cataract then (s)he will be able to see whether it's changed since the last checkup.