Table 1.

Optometric findings considered abnormal.

Criteria for ocular abnormalities

A distance visual acuity (with optimal correction) in either eye worse than 6/6 A near visual acuity (with optimal correction) in either eye worse than N5 Stereoacuity worse than 60″ An average amplitude of accommodation that did not meet the Duane–Hoffstetter formula for probable amplitude of accommodation (minimum amplitude of accommodation must be more than 15–0.25age) A near point of convergence more distal than 10 cm Any slip evident on fixation disparity at near Any report of blurring or diplopia on motility assessment