Results of the prospective evaluation of radial keratotomy (PERK) study five years after surgery
Waring GO, Lynn MJ, Nizam A, et al. Results of the prospective evaluation of radial keratotomy (PERK) study five years after surgery. Ophthalmology 1991;98: 1164-1176
Results of the prospective evaluation of radial keratotomy (PERK) study 10 years after surgery
Waring GO, Lynn MJ, McDonnell PJ, and the PERK Study Group. Results of the prospective evaluation of radial keratotomy (PERK) study 10 years after surgery. Arch Ophthalmol 1994;112:1298-1308
Surgical treatment of overcorrection following radial keratotomy: Evaluation of clinical effectiveness
Lindquist TD, Williams PA, Lindstrom RL. Surgical treatment of overcorrection following radial keratotomy: evaluation of clinical effectiveness. Ophthalmic Surg 1991;22(2):12-15
Diurnal changes in refraction, corneal curvature, visual acuity, and intraocular pressure after radial keratotomy in the PERK study
Schanzlin DJ, Santos VR, Waring GO, et al. Diurnal changes in refraction, corneal curvature, visual acuity, and intraocular pressure after radial keratotomy in the PERK study. Ophthalmology 1986;93:167-175
Long-term stability of refraction after intrastromal suture correction of hyperopia following radial keratotomy
Lyle WA, Jin GJC. Long-term stability of refraction after intrastromal suture correction of hyperopia following radial keratotomy. J Refract Surg 1995;11:485-489