DS has just realised that he is very short sighted in his left eye. It is fine with close ups and other eye is completely fine both long and short.
His other eye must be compensating because it seeks v bad when right eye is covered but no probs when neither eye covered.
Earliest we'll be able to go to opticians is weekend.
I always thought if you were short sighted it was both eyes.
Is this quite normal or should I be concerned ?