This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Optics and refraction, Subject name: Ophthalmology
LASIK is used in - 
Select and explain. 
A. Myopia, B. Hypermetropia, C. Astigmatism, D. Presbyopia
A: Myopia
Answer: A: Myopia 
Explanation: Laser in-situ keratomileusis (LASIK), Currently this procedure is being considered the refractive surgery of choice for myopia of up to - 12 D. Patient selection criteria are:  Patients above 20 years of age,  Stable refraction for at least 12 months.  Motivated patient.  Absence of corneal pathology Reference : A K KHURANA OPHTALMOLOGY,Edition 4, Page-47