Millodot M, Thibault C
Ophthalmic Physiol Opt. 1985;5(3):297-301.
The refraction of 122 eyes was measured for five distances of fixation with an objective Canon Auto Refractor. The cylindrical component was found to vary, but by a small amount. We found no evidence of a deliberate reduction in astigmatism with accommodation, in accord with other studies. The axis was also found to vary by at least 5 degrees in about half of the subjects tested, which is also in good accord with other investigations. The dark focus of 31 eyes was not found to correlate with a minimum astigmatic distance, since this only occurred in 11 out of the 31 eyes. For these 11 eyes, the correlation of dark focus and the dioptric distance where astigmatism was minimum was equal to + 0.54. It implied that for those eyes (about one-third of all types) there was a tendency to yield the best optical quality at the dark focus.
使用佳能自动验光仪对122只眼睛在五个注视距离下的屈光进行了测量。发现柱镜成分存在变化，但变化量较小。与其他研究一致，我们没有发现随着调节散光有意减少的证据。在大约一半接受测试的受试者中，还发现轴位至少变化了5度，这也与其他研究结果高度一致。31只眼睛的暗焦点与最小散光距离没有相关性，因为在这31只眼睛中只有11只出现这种情况。对于这11只眼睛，暗焦点与散光最小时的屈光度距离之间的相关性等于+0.54。这意味着对于那些眼睛（约占所有类型的三分之一），在暗焦点处有产生最佳光学质量的趋势。
