This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Surgical Techniques for Cataract Extraction, Subject name: Ophthalmology
[{'content': 'For the treatment of a patient with after cataract which laser is used? \nSelect and explain. \nA. LASIK, B. Nd-YAG, C. Excimer, D. Argon', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans: B (Nd - YAG) Ref: Parson's Diseases of the Eve 21st edition pg. 584.Explanation:LasersFrequencyUsesNd:YAG1064Posterior capsulotomy, iridotomy. vitreolysisFrequencydoubledNd:YAG532Retinal photocoagulation, cyclophotocoagulationArgon green514Trabeculoplasty,iriaoplasty,pupillomydriasis, retinal photocoagulationDiode laser800Retinal photocoaqulationKrypton Red714Retinal photocoagulationExcimer(Argonfluoride)193Photorefractive keratectomy, phototherapeutic keratectomy, LASIK, LASEKFemto second laser1053In refractive surgeries and lamellar and full thickness corneal transplants to create flaps", 'role': 'assistant'}]