Removal of PMMA lens by Scleral tunnel and SHF of IOL скачать в хорошем качестве

Removal of PMMA lens by Scleral tunnel and SHF of IOL

Thanks to CF for allowing me to share this. He had a one piece PMMA lens inserted after cataract surgery many years ago. PMMA is a solid plastic and cannot be cut in half. It had fallen into the gel. The plan was to remove it as one piece and replace it with a modern 3 piece lens. To get the lens out I needed to create a large wound in the white of the eye that would self seal so I had a firm eye to work with in order to put in the new lens adn fixate it. The tunnel is formed at the top and then vitrectomy ports are placed as the chances of the lens falling to the back of the eye were very high and I needed access before the large wound was formed. Once the ports were in place the wound was formed and the lens was brought into view, grasped and then removed through the wound. A a new lens was inserted through the wound and fixed into the sclera with the needle haptic fixation technique modified from Yamane. Surgery went very well and was carried out under local anaesthetic taking 30 minutes to complete.