Rao K R, Wessels I F
Operation Eyesight Universal Institute of Ophthalmology, Kasturba Medical College, Manipal, India.
Ophthalmic Surg. 1993 Jun;24(6):407-10.
A hand-held indirect lens and an operating microscope can provide a view of the fundus similar to that provided by the usual binocular indirect ophthalmoscope headpiece. The only modification required is that the working distance must be increased to allow the microscope to be focused on the aerial image created by the hand-held lens. This technique provides a cost-effective means of retinal examination in preparation for intraocular lens implantation. Also, the view of the fundus it provides when complications such as choroidal hemorrhage or lens nucleus dislocation occur, facilitates appropriate management. It also can be used during posterior segment procedures such as foreign body removal, posterior vitrectomy, and retinal detachment repair. The advantages of this method include the possibility of using the microscope's zoom capability to provide greater magnification, and beam splitters for video or still-camera documentation of the findings during examination under anesthesia.
手持间接检眼镜和手术显微镜能够提供类似于普通双目间接检眼镜头戴装置所呈现的眼底视图。唯一需要做的调整是必须增加工作距离，以便显微镜能够聚焦于手持透镜所形成的空中图像。这种技术为人工晶状体植入术前的视网膜检查提供了一种经济有效的方法。此外，当出现脉络膜出血或晶状体核脱位等并发症时，它所提供的眼底视图有助于进行适当的处理。它还可用于诸如异物取出、玻璃体后段切除术和视网膜脱离修复等后段手术。这种方法的优点包括能够利用显微镜的变焦功能提供更大的放大倍率，以及使用分光镜在麻醉检查期间对检查结果进行视频或静态相机记录。
