Schirmer K E
Klin Monbl Augenheilkd. 1979 Apr;174(4):642-3.
The Hruby-lens may be used as a contact lens with the plano surface in contact with the cornea and the concavity facing the microscope. The observer surveys a large field of the fundus. By decentering the lens, adjacent and peripheral areas of the fundus are drawn into the observer's field. This increases further the total area of fundus that can be observed.
赫鲁比透镜可用作隐形眼镜，其平面与角膜接触，凹面朝向显微镜。观察者可观察到较大的眼底视野。通过移动透镜的中心位置，眼底的相邻区域和周边区域会被纳入观察者的视野。这进一步增加了可观察到的眼底总面积。
