Squint can itself lead to cosmetic disfigurement, in addition in children there is a risk of amblyopia. Under such circumstances, it is important that one corrects the squint early. In addition, there is a beneficial effect of correction of squint even in older adults as there is improvement in binocular vision. The simplicity and ease of surgery means some patients start work the next day post-surgery. The results are very good with a proper clinical assessment and modern techniques of surgery.
The most common types of squint are exotropia (divergent) and esotropia (convergent squint).
Convergent squint can be corrected many a times by glasses. Early correction is recommended especially in the convergent squints as there is a higher risk of amblyopia and loss of binocularity.
The 2 images from each eye --> confusion --> suppression of one eye --> lazy eye (amblyopia)
The 2 images from each eye --> double vision
Yes, lazy eye or amblyopia needs to be treated before squint surgery is undertaken for good long term outcome.
Depending on the nature of the squint the various modalities available are
Recovery from surgery is very fast and normal activities can be resumed the day after surgery.
No head bath should be taken for a week after surgery and swimming should be avoided for 2 months. Avoid splashing water into your eyes. One can watch TV and read books normally without undue strain after surgery.
Squint surgery is generally very successful. Every patient is different, and surgery is planned for everyone considering various factors with the objective of a good long-term outcome. Chances of recurrence are very less with appropriate modification of technique.