Most children have latent hyperopia and it does not present a problem. hyperopia or farsighted is a short eye. because children are small so are their eyes. The eye can correct for hyperopia but not myopia or astigmatism. Latent means that your son does not wear glasses for hyperopia or if he wears glasses it does not correct all the hyperopia. Hyperopia is usually only a problem if associated with crossing of the eyes or in amounts greater than about 1.5-2.0 diopters where it can cause eye strain.
The doctor prescribed him a glass with SPH 2.5 and 2.25...what does it mean...and what is the eye strain