It is difficult for me to answer your question with 100% certainly because there are many different types of antidepressants each with there own side effect profile. I will say that most of the likely possibilities just from knowing what is commonly prescribed cause eye problems only rarely. Most likely your son was placed on an SSRI (examples fluoxetine, paroxetine, citalopram, sertraline, escitalopram). If not, I apologize for the erroneous explanation below. SSRIs do have side effects, though in most people these are not severe enough to warrant cessation of the drug. By far the most common side effect is delayed orgasm, or inability to have an orgasm, or simply nausea (especially when starting the drug). 1-10% of people may report impaired ocular accommodation. This is when they eye has trouble adjusting to looking at objects that are close. This may cause the patient to squint. I must stress that this side effect is rare. The only way to determine if your son is experiencing this unusual side effect is to be evaluated by his pediatrician
or family doctor
. They can perform vision tests in the office which can rule in or rule out impaired accommodation and can make medication adjustments as needed. Good luck.