Kate's comment about getting Raymond an eye exam reminded me. For parents in the US with children under a year. You can get them a free eye exam with an optometrist. The program is called Infant See . Pediatricians eye exams do not catch every eye problem especially with infants, and an eye exam before they are one is suggested. A free eye exam is never a bad thing and yes eye doctors can check an infant and toddlers vision and see if there are issues and prescribe glasses even before they can read eye charts! They use prisms and other tools to do this.
Eloise had her first eye appointment at 4 months, and will be going back around 16 months for her next one, Desmond goes yearly too, because I have had glasses since I was 18 months and they knew I needed them from 12 months. I really do suggest that everyone does an infant eye check before their child turns one. Since it is free if you do it though a doctor signed up with Infant See you don't even have to worry about if you have eye coverage or a co-pay if you do!