Hello, I know how you feel about the glasses my son also at an early age was crossing his eyes. We took him to get his eyes checked the doctor said he needed glasses. I was not trusting this doctor and pretty much had to force myself to go along with the glasses. When my sons glasses finally came in the lenses looked like bottle caps. Me and my husband felt bad for him and worried that he would get teased in school. But once in school he did not get teased he was only more excited finding out other kids his age also wore glasses and his teacher.
His eyes have gotten better over time every eye exam I take him to, his perscription reduces. in getting him his glasses as early as we did he may later in life not have to wear glasses.
I met a woman at a store one day who had the same problem with her eyes and now is wearing glasses but she had told me back when she was young her parents did not know that her eyes could get better in time and possibly be fixed if she was to wear special perscription glasses. This lady took off her glasses to show me her eyes they still do cross and she told me her doctor said if she was to have started with the glasses earlier at her age now she would not be wearing glasses.
I would not worry much about your son wearing glasses the only problem I have come across is constantly cleaning them because my son will were them even if they have a visible layer of film on them . I wonder how he even can see with them being so dirty . As he grows he needs new glasses that fit him this is not a problem at all he love picking his own pair out of the bunch they have on the wall. One decision we made with the glasses was having the be with the transition film on them. Being that his lenses are so thick the sun would hurt his eyes so now we always add transition to his new pairs. I would get those glasses as soon as possible.