@TheVendaGuy There's a lot of signs a kid can't see well, bumping into things, squinting, the eye moving in or out, head positions, lack of social interaction.
Sometimes it's missed because one eye can compensate for the other, that's why all kids need an eye exam first few years of life
@TheVendaGuy We use an instrument called a retinoscope with lenses. By passing light through the retinoscope and it's relationship with the lense and light we can pretty accurately determine a child's prescription.
@abunass3r Minorities tend to rise fast in colonial settler societies when they out-right wing their white counterparts. It's very comforting to a right winger to see someone from a minority drink the kool-aid. Even more validating for a minority to be accepted in a racist society.