File Name: phacoemulsification principles and techniques .zip
Phacoemulsification is a modern cataract surgery method in which the eye 's internal lens is emulsified with an ultrasonic handpiece and aspirated from the eye. Aspirated fluids are replaced with irrigation of balanced salt solution to maintain the anterior chamber. The term originated from phaco- Greek phako- , comb. Proper anesthesia is essential for ocular surgery. Topical anesthesia is most commonly employed, typically by the instillation of a local anesthetic such as tetracaine or lidocaine. A facial nerve block using lidocaine and bupivacaine may occasionally be performed to reduce lid squeezing.
Purpose: To describe a new, en masse, stepwise technique for purely soft cataracts. RAPID technique was performed in 54 eyes of 54 patients 31 males and 23 females; mean age The soft nucleus was emulsified, after performing hydrodissection, in a stepwise manner in the safe zone away from posterior capsule and corneal endothelium. The primary outcome measures were cumulative dissipated energy CDE , ultrasound time UST , amount of fluid used, surgical complications and mean endothelial cell loss. Results: Phacoemulsification with IOL implantation was performed successfully in all patients without any intraoperative complications.
However, the procedure is not without risks and complications. Poor visual outcome, retinal detachment, infection, diplopia, and cornea and iris problems may pose considerable challenges. Additional potential problems arise from implanting the intraocular lens IOL. Edited by a renowned master surgeon and educator in the field, and authored by a remarkable cast of cataract experts, this is the definitive text on managing cataract surgery, with practical guidance on recognizing and managing complications, should they arise. Experts demonstrate the right way to perform phacoemulsification and diverse surgical and intraocular lens implantation procedures in order to reduce risk and improve patient outcome.
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A clear understanding of the physical and mechanical principles that govern phacoemulsification can facilitate usage of this technique for effective and efficient cataract removal It is essential to understand the basic principle of phacodynamics. This is even more relevant to bimanual microphaco and is mandatory for the evolution of this technique. Phacodynamics is defined as the study of the fundamental principles of inflow rates, outflow rates, vacuum, phaco power modulation along with microsurgical maneuvers with different types and grade of cataract.
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This is even more relevant to bimanual microphaco and is mandatory for the evolution of this technique.Reply
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