No. This can only result in bury vision, headache or discomfort for that moment at the maximum. Inability to see far objects (short-sightedness) if present, can increase (requiring stronger minus glasses) as you age till it stabilizes when you reach around 18 to 21 years. Therefore this is the age when your doctor can safely perform a LASER removal of glasses. During these year, whether you wear wrong powered glasses or do not wear them at all, is not going to effect if your prescription is going to increase or not.

Yes. All diabetics, specially those with poor control eventually develop poor blood flow throughout the body including eyes. This bring about structural changes particularly in the back of eye (Retina) which an eye doctor can see with special lenses. while these changes begin to appear does not necessarily mean that the patient is going to experience a change in vision. Nevertheless if this process continues unchecked a permanent and severe vision loss may result. It is therefore necessary that a patient with diabetes (controlled / uncontrolled) should see an Eye doctor at least once a year. Only then the doctor would be in a position to take timely corrective measures when necessary.

Not necessarily. majority of the childhood squints settle with mere correct prescription of glasses and eye muscle exercises.