Tolentino F I, Freeman H M
Arch Ophthalmol. 1979 Nov;97(11):2197-8. doi: 10.1001/archopht.1979.01020020515022.
A new prismatic type of lens enables a more peripheral view of the vitreous cavity. The surface in contact with the cornea is concave. The opposite surface is plano but inclined to produce a prismatic effect of 15 degrees or 25 degrees. A cannula attached to the lens provides corneal irrigation. Although this lens was originally designed for vitrectomy use, it is also useful for diagnostic biomicroscopy of the vitreous and fundus in the office.
一种新型的棱柱形透镜能够提供对玻璃体腔更周边的视野。与角膜接触的表面是凹面的。相对的表面是平的，但有倾斜度以产生15度或25度的棱镜效应。连接在透镜上的套管提供角膜冲洗。尽管这种透镜最初是为玻璃体切除术设计的，但它在诊室中对玻璃体和眼底的诊断性生物显微镜检查也很有用。
