By American Academy of Ophthalmology, Steven I. Rosenfeld, MD
Reports the anatomy, body structure, embryology, and pathology of the lens. additionally presents an outline of lens and cataract surgical procedure, and describes the problems of surgical procedure.
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Reports the anatomy, body structure, embryology, and pathology of the lens. additionally presents an summary of lens and cataract surgical procedure, and describes the problems of surgical procedure.
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Extra info for 2007-2008 Basic and Clinical Science Course Section 11: Lens and Cataract
Tripronged pupil stretchers. (Reprinted with permission from Agarwal A. Phaco Nightmares: Conquering Cataract Catastrophes. ) Figure 3-2. (A) A small pupil is seen. (B) An iris hook is inserted through the corneal paracentesis and the pupillary margin is engaged. (Reprinted with permission from Agarwal A. Illustrative Guide to Cataract Surgery: A Step-by-Step Approach to Refining Surgical Skills. ) A B Iris Hooks Retracting the iris tissue, rather than cutting it, is simple and results in a better postoperative pupil appearance (Figure 3-2).
4 To prevent this, the infusion bottle must be lowered significantly (approximately 70 cm). The aspiration flow rate and vacuum should also be lowered. If possible, dispersive OVD can be used to push vitreous posteriorly and to provide a barrier between the vitreous and the phaco tip. It also serves to elevate nuclear material above the plane of the anterior capsule where it can be emulsified. The anterior chamber can even be filled with OVD, as described by Dr. David F. 5 If there is already too much vitreous in the anterior chamber for the use of OVD, limited vitrectomy may be necessary to remove vitreous which would otherwise prevent aspiration of the nucleus.
The torn posterior capsule: its intraoperative behaviour, surgical management and long term consequences. J Cataract Refract Surg. 1990;16:490-494. Gimbel HV. Posterior capsular tears during phacoemulsification—causes, prevention and management. Eur J Refract Surg. 1990;2:63-69. Vajpayee RB, Sharma N, Dada T, et al. Management of posterior capsule tears. Surv Ophthal. 2001;45:473-488. Peyman GA, Cheema R, Conway MD, Fang T. Triamcinolone acetonide as an aid to visualization of the vitreous and the posterior hyaloid during pars plana vitrectomy.
2007-2008 Basic and Clinical Science Course Section 11: Lens and Cataract by American Academy of Ophthalmology, Steven I. Rosenfeld, MD