I have shown my son who is 4 years old to a pediatric eye specialist. He recommended glass and I have ordered for the glass. But what is bothering me is that the doctor wrote in his prescription a term extropia. But he did not suggest anything for my son. He only recommended wearing glass. I asked him if everything is alright except the glass. He said everything is alright. He did not explain anything about extropia. Now my question is that is there anything to worry about extropia of my son? The doctor suggested a check up after 6 months.