Harris W F
Department of Optometry, Rand Afrikaans University, Auckland Park, South Africa.
Ophthalmic Physiol Opt. 1993 Jul;13(3):309-12. doi: 10.1111/j.1475-1313.1993.tb00477.x.
Ocular movements required in most visual functions are affected by lenses in front of the eye. Fundamental to an understanding of these movements are concepts such as the ocular rotation factor and the ocular orientational demand. In this paper the ocular rotation factor for thin spherical lenses is generalized for astigmatic lenses. A compact matrix equation is obtained for the orientational demand in the case of such lenses. The equations are satisfactory in ordinary situations but they break down under certain circumstances. Equations are derived for these special circumstances in particular and also for all circumstances in general.
大多数视觉功能所需的眼球运动受眼前透镜的影响。理解这些运动的基础概念包括眼球旋转因子和眼球定向需求。本文将薄球面透镜的眼球旋转因子推广到散光透镜。针对此类透镜的情况，得到了一个关于定向需求的简洁矩阵方程。这些方程在一般情况下是令人满意的，但在某些情况下会失效。特别推导了这些特殊情况的方程，也推导了所有情况的一般方程。
