Hi Emlett-
Here is my experience:
DS(now 6 1/2) was diagnosed with lazy eye and squint at the age of 3. His came on suddenly- one day he looked 'normal' and the next his eye was stuck in the corner (inverted- or looking towards his nose) I freaked out as I do but once I was referred to our local eye specialists treatment has been brilliant.
He goes to see the orthoptist every 6 weeks to make sure he is staying on track and his eyesight is stable.
He was immediately given glasses to correct his long sightedness and eye muscle weakness. He was given eye patches to wear daily as well over his 'good eye'. He did this every day for 1-2 hours until he was nearly 6. His eyesight improved significantly to the point that it is now nearly perfect when he wears his glasses. He will have to wear glasses for the rest of his life. Once he is a young man, he will qualify for contacts.
Last year he was referred to the opthamologist for eye surgery. His squint was severe enough to qualify for the free surgery.
Just to clarify because sometimes it is confused, the Lazy Eye refers to the actual vision aspect and the Squint refers to the cosmetic side. The glasses and the patching is to correct the vision and the surgery is to correct the cosmetic eye turn. Sometimes, if it is caught early enough, the glasses and eye patching will correct the cosmetic side as well, especially if the squint is not pronounced.
But the surgery will not correct the vision, only the cross-eyed appearance.
DS had surgery and it went really well. It was horrendous watching him go under and I was so worried that he would poke at his eye and infect it post surgery but it was fine. his eye turned out a bit in the wrong direction after the surgery but surgeon explained that this would relax as time went on. It has. His eye now still turns in a bit without his glasses but that is what it is supposed to do. As he needs the glasses and the glasses correct the appearance to some extent, his eye would look like it was turned out with the glasses on if they corrected for glasses off, if that makes sense.
Hope this is a bit helpful for your friend.