Working…
COVID-19 is an emerging, rapidly evolving situation.
Get the latest public health information from CDC: https://www.coronavirus.gov.

Get the latest research information from NIH: https://www.nih.gov/coronavirus.
ClinicalTrials.gov
ClinicalTrials.gov Menu

Prospective Evaluation of Radial Keratotomy (PERK) Study

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT00000129
Recruitment Status : Completed
First Posted : September 24, 1999
Last Update Posted : September 17, 2009
Sponsor:
Information provided by:
National Eye Institute (NEI)

No Study Results Posted on ClinicalTrials.gov for this Study
Recruitment Status : Completed
Primary Completion Date : No date given
Actual Study Completion Date : October 1983
Publications:
Novak AF; Lindstrom RL; Williams PA; Everson M; Corneal pachymetry prior to radial keratotomy: a comparison of techniques., J Refract Surg 1985;1:151-153
Bourque LB; Cosand BB; Drews C; Waring GO; Lynn M; Cartwright C; Satisfaccion informada, fluctuacion de la vision y resplandor en pacientes al cabo de un ano tras la cirugia en el estudio de la evaluacion prospectiva de la queratotomia radial (EPQR)., Arch Ophthalmol 1986;2:57-64
Lynn MJ; Waring GO; Predictability and stability of radial keratotomy., J. Refract Surg 1987;3:193-196
Waring GO; Lynn MJ; McDonnell PJ; Resultados del estudio de evaluacion Prospectiva de la Queratotomia Radial (EPQR) 10 anos despues de la cirugia., Arch Ophthalmol (Edicion Espanola) 1995;6:99-110
Nizam A; Waring GO; Lynn MJ; Stability of refraction during 11 years in eyes with simple myopia., Invest Ophthalmol Vis Sci 1996;37:S1004