This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lens, Subject name: Ophthalmology
What is ther new advance in cataract surgery? 
Select and explain. 
A. Femtosecond Laser, B. Neodymium laser, C. Nanoseond laser, D. Picosecond Laser
A: Femtosecond Laser
Answer: A: Femtosecond Laser 
Explanation: Femtosecond laser-assisted cataract surgery provides suirgeons an exciting new option to potentially improve patient outcomes and safety. In this surgery a femtosecond laser is used for various steps like lens fragmentation and capsulotomy. (Ref: Femtosecond laser-assisted cataract surgery: Kendall E. Donaldson, Rosa Braga-Mele, Florence Cabot, for the ASCRS Refractive Cataract Surgery Subcommittee0