近年来研制了一种利用激光的视力测定装置,方法是用二束激光投影到视网膜上作成干涉条纹,从被检者能分辨出最细的干涉条纹中换算出视力来。用此法测得的视力称激光干涉条纹视力(laser interference fring visual acuity),或简称激光视力(laser visual acuity;LVA)。此法的优点为不受屈光及调节的影响,即使像白内障等屈光间质有混浊,只要稍微有点间隙二束入射光线就能通过,而测知视网膜的视功能情况。因此利用这种方法,即使有复杂的屈光不正,不用眼镜或接触眼镜,也可知道它的视功 In recent years, a laser vision measuring apparatus has been developed by using two laser beams projected onto the retina to create interference fringes, and converting the visual acuity from the thinnest interference fringes detected by the subject. The visual acuity measured by this method is called laser interference fring visual acuity, or laser visual acuity (LVA) for short. The advantage of this method is that it is not affected by refraction and adjustment. Even if opacities such as cataracts have opacity, as long as two beams of incident light can pass through a little gap, the retinal visual function can be detected. So using this method, even with complex refractive errors, without glasses or contact lenses, but also know its visual function