Hello It seems from the history that your son is having cylindrical refractive power. In children the refraction should always be carried out by using cycloplegic drugs like atropine or homatropine as accommodation is very active. Hence I advice you to get the refraction done by using cycloplegic drugs if it was not done earlier. The refractive power changes quite rapidly in children as the eye ball grows rapidly, hence the chances of variation in the refractive error is quiet common in children. Hence I advice you to consult your ophthalmologist or optometrist for examination and correction of the refractive error. Thank you