ACCOMMODATIVE RESPONSES TO ANISOACCOMMODATIVE TARGETS

Young subjects (mean age 25.2 +/- 2.3 years) viewed with symmetric con vergence two fusible targets situated at different distances (i.e. ani soaccommodative targets). The fused target was a Maltese cross which s ubtended 3 degrees at the eye: the right and left arms of the cross we re seen by both eyes and each of the other arms was seen by only one e ye. The vergences of the anisoaccommodative targets differed by either 3.00 or 0.50 D. Accommodation of each eye was measured by a Canon R1 auto-refractor. There was no evidence of systematic anisoaccommodation . When presented with anisoaccommodative targets, the accommodation of both eyes tended towards a level which was more appropriate to the fa rther target, i.e, that which required less accommodative effort. Impl ications of the findings for optometry are briefly discussed. (C) 1998 The College of Optometrists. Published by Elsevier Science Ltd. All r ights reserved.