Arpa P
Department of Ophthalmology, Ospedale S. Gerardo dei Tintori, Monza, Italy.
Retina. 1992;12(3 Suppl):S87-9. doi: 10.1097/00006982-199212031-00018.
A completely new surgical technique to obtain pupillary dilatation is presented. It permits achievement of a mydriasis sufficient to observe the vitreous cavity in both phakic and aphakic eyes during vitreous surgery. Miotic immobile pupils not dilatable pharmacologically are enlarged by means of a silastic ring with a C-shaped groove on its outer part. This is introduced into the eye through a limbic opening. When in place, the external sulcus of the ring hosts the pupillary rim. Twelve patients (three phakic and nine aphakic) were treated. In two patients operated upon previously with silicone oil tamponade, some difficulties were encountered during the insertion of the device owing to the lubricating effect of the oil. After the removal of the ring, all the pupils returned to a round shape, with no apparent damage to the iris structure.
本文介绍了一种全新的实现瞳孔扩张的手术技术。该技术能在有晶状体眼和无晶状体眼的玻璃体手术中实现足够的瞳孔散大，以便观察玻璃体腔。对于药物无法散瞳的瞳孔缩小且固定不动的情况，可通过一种外部带有C形凹槽的硅橡胶环来扩大瞳孔。该硅橡胶环通过边缘切口置入眼内。放置到位后，环的外部凹槽容纳瞳孔边缘。共治疗了12例患者（3例有晶状体眼和9例无晶状体眼）。在2例先前接受硅油填塞手术的患者中，由于硅油的润滑作用，在置入该装置时遇到了一些困难。取出环后，所有瞳孔均恢复圆形，虹膜结构未出现明显损伤。
