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在眼科门诊中,经常遇到一些就诊患者主诉看灯光时见灯光周围出现彩色光晕,自以为是患了青光眼而惊恐万分,实际上是一种虹视现象。本文就上述问题简述如下。一、虹视的产生虹视是限部常见的症状之一。其发生与屈光间质透明度的变化密切相关。当人眼注视前方某一个亮点时,出于屈光间质透明度的改变而产生衍射光栅,它将前方射来的白色光线根据其所包含的各种光波长的不同而分解成多种颜色成分,长波光(红光)居于外圈,短波光(紫光)居于内圈而出现典型的彩环,这就是虹视。根据其病因的不同,临床分为生理性虹视及病理性虹视两种。前者是由于晶体放射状纤维具有衍射光栅的作用,因而即使是正常眼,在黑暗中观看一个极
In the ophthalmology clinic, often encounter some patients complained about seeing the light when the lights appear around the colorful halo, thought they were suffering from glaucoma and terrified, in fact, is a rainbow phenomenon. This article briefly describes the above issues. First, the rainbow produced Hong rainbow is one of the common symptoms. Its occurrence is closely related to the change of refractive transparency. When the human eye looks at one of the bright spots in front, a diffraction grating arises due to the transparency of the refractive interstitial light, which diffracts the white light emitted in the front direction into various color components according to the various light wavelengths contained therein , Long-wave light (red) living in the outer ring, short-wave light (purple) living in the inner ring and a typical color ring, which is the rainbow. According to their different etiology, the clinical is divided into two kinds of physiological rainbow and pathological rainbow. The former is due to the crystalline radial fiber has a diffraction grating effect, so even if the normal eye, watch in the dark one pole