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本文介绍一种新型角膜检查镜。其原理是根据等量交叉柱面透镜的合成原理制成可变量合成圆柱面透镜,合成柱面透面的轴向不变,并结合暗亮相间的同心圆环和分划板透射照明的角膜反射像形状的调整观察,可定量测量角膜表面的散光度和轴的方向。本角膜检查镜可用于手术显微镜下眼内手术时角膜散光检测的便携式角膜检查镜,在工作距离0.025m时,可测量的角膜散光度数可达8.50D,测量误差<0.20D。显微定量角膜检查镜结构简单、方便准确,有助于对术眼角膜的散光度数和轴向进行检测和调整。(中华眼科杂志,2006,42:263-266)
This article describes a new type of corneal examination. The principle is based on the principle of the equivalent amount of cross cylindrical lens synthesis variable variable volume cylindrical lens synthesis, the cylindrical surface of the cylindrical uniform constant change, combined with dark and white concentric rings and reticle transillumination of the cornea Reflecting the shape of the shape of the observation can be measured quantitatively corneal surface astigmatism and axis direction. The corneal examination scope can be used as a portable corneal examination corneal astigmatism examination during intraocular surgery under a surgical microscope. The measurable corneal astigmatism degree can reach 8.50D when the working distance is 0.025m, and the measurement error is less than 0.20D. Microscopic quantitative corneal examination of the structure is simple, convenient and accurate, help to corneal astigmatism degree and axial detection and adjustment. (Chinese Journal of Ophthalmology, 2006,42: 263-266)