Slow accommodation release with a cerebellar lesion.

Accepted for publication 28 April 1993 Case report A 20-year-old woman with difficulties in focusing on both far and near objects presented to us. She had an egg sized left subtentorial arachnoid cyst. Her corrected visual acuity was 20/20 bilaterally. On leftward gaze, nystagmus was evoked. Slight ocular saccades and hypometria were present. Convergence was good. Pupillary sizes were normal and isocoric. Light and near reaction were normal. Accommodation amplitude was right eye 10 6 D and left eye 10 9 D. Accommodopolyrecorder recordings showed increased accommodation times and relaxation times in both eyes. The accommodation times were right eye 143 and left eye 2-02 seconds. The relaxation times were right eye 1 85 and left eye 1 26 seconds. Mean and standard deviation of times obtained in age-matched normal subjects were