title: Pre- and post-operative treatment of constant and intermittent exotropia.
abstract: Intermittent exotropia is classified according to the AC/A ratio. Convergence amplitude measured on a light includes accommodative convergence. Amplitude measured while maintaining clear, single, binocular vision on 20/30 print utilizes only true fusional convergence.
mesh_terms: D000065:Accommodation, Ocular; D006801:Humans; D009988:Orthoptics / Q000379:methods*; D013285:Strabismus / Q000145:classification / Q000175:diagnosis / Q000628:therapy*