Ghanem RC, de la Cruz J, Tobaigy FM, et al.: LASIK in the presbyopic age group : safety, efficacy, and predictability in 40- to 69-year-old patients. Ophthalmology, 114 : 1303-1310, 2007.
Hersh PS, Fry KL & Bishop DS : Incidence and associations of retreatment after LASIK. Ophthalmology, 110 : 748-754, 2003.