Nishi O, Sakka Y
Nishi Eye Hospital, Osaka, Japan.
Graefes Arch Clin Exp Ophthalmol. 1990;228(6):582-8. doi: 10.1007/BF00918494.
A new intraocular lens made of PMMA and fixed in the anterior capsular opening is introduced. The lens diameter is 4 mm and the lens has no haptics in the conventional sense but is finely grooved around the circumference edge. The lens is inserted into the anterior capsule via a very small-diameter opening created by mini-circular capsulorhexis. The anterior capsular opening, with a round, smooth-edged margin, avoids stress concentration and, therefore, the capsule does not easily tear. This opening catches the lens and chokes it along the grooved edge. In animal experiments, firm fixation was obtained. This lens may be adequate for small-incision surgery, and in the future it may be used to prevent leakage of filling material during refilling of the lens, since it acts as a part of the anterior capsule and seals the capsular opening completely.
一种由聚甲基丙烯酸甲酯（PMMA）制成并固定在前囊开口处的新型人工晶状体被引入。该晶状体直径为4毫米，在传统意义上没有袢，但在圆周边缘有精细的凹槽。晶状体通过小直径圆形撕囊形成的非常小的开口插入前囊。前囊开口具有圆形、边缘光滑的边缘，避免了应力集中，因此囊不容易撕裂。这个开口接住晶状体并沿着带凹槽的边缘将其卡住。在动物实验中，实现了牢固固定。这种晶状体可能适用于小切口手术，并且在未来，由于它起到前囊的一部分作用并完全密封囊开口，它可能用于防止晶状体再填充期间填充材料的泄漏。
