Refractive Errors: all 427 studies
Page 5 of 5. Open to participants first (62), then studies with results posted, then the rest; newest registration first within each.
- Project Gullstrand - European Project for the Determination of Average Biometric Values of Human EyesCompletedNCT01173614
- The Effect of Gabapentin (Neurentin) and Pregabalin (Lyrica) in Pain Reduction After Photorefractive KeratectomyStatus unknownNCT01122004Phase 1
- Epithelial Healing and Visual Outcomes Using Omega-3 Therapy Before and After Photorefractive Keratectomy (PRK) SurgeryCompletedNCT01059019Not applicable
- Peripheral PresbyLASIK Using the Allegretto Wavelight System For The Treatment of PresbyopiaWithdrawnNCT01059006Not applicable
- Study to Evaluate the Clinical Performance of SynergEyes A2 Hybrid Contact LensesStatus unknownNCT01058629Not applicable
- Optical Defocus to Stimulate Eye Elongation in HyperopiaStatus unknownNCT00950924Not applicable
- Intrastromal Correction of Ametropia by a Femtosecond LaserStatus unknownNCT00928122Phase 3
- Mechanical Versus Alcohol Epithelial Debridement During Hotorefractive Keratectomy (PRK)CompletedNCT00918697Phase 2
- Ocular Responses to Short and Long-term Lens WearCompletedNCT00722891Not applicable
- Evaluation of Effectiveness of Correcting Refractive Error With Ready-made SpectaclesCompletedNCT00657670Not applicable
- Silicone Hydrogel Contact Lenses on Low Astigmatism in JapanTerminatedNCT00639353Not applicable
- Anterior Stromal Changes After PRK by Using Intraoperative Mitomicin CTerminatedNCT00599950Phase 4
- Study of Soft Contact Lens Use With 7 Day Extended WearCompletedNCT00597467Not applicable
- Randomized Clinical Trial of Bifocal Lenses Versus Computer-specific Progressive Addition LensesTerminatedNCT00585026Phase 3
- Corneal Flap Thickness Planed vs Measured After LASIK by Using Tree Different Systems CutTerminatedNCT00558324Not applicable
- A Prospective Comparison of Alcon LADARVision Wavefront-guided LASIK Enhancement and Conventional LASIK Enhancement for the Correction of Residual Refractive Errors Following LASIK ProceduresCompletedNCT00413881Not applicable
- Customized PRK With Mitomycin Versus Customized Lasik for Myopic AstigmatismCompletedNCT00365040Not applicable
- Contact Lens WettabilityCompletedNCT00349063Phase 4
- A Study of Interventions to Reduce Disability From Visual Loss in Nursing Home ResidentsCompletedNCT00348621Phase 4
- Does Undercorrection of Myopia Retard Myopia Progression Among Kindergarten Children?WithdrawnNCT00348166Phase 1
- Improving Vision and Quality of Life in the Nursing HomeCompletedNCT00347620Not applicable
- Comparative Study of Cycloplegic Refraction and Subjective Refraction With Fogging in School Age ChildrenCompletedNCT00347347
- Comparison of Higher Order Aberrations and Contrast Sensitivity Between Acrysof SN60AT, SN60WF and Restore Intraocular LensesCompletedNCT00345085
- Effects of Optical Blur on Performance and Comfort of Computer UsersStatus unknownNCT00318045Phase 3
- Effects of Different Add Powers on the Comfort and Productivity of Computer Users With Fixed or Free Head MovementCompletedNCT00317525Phase 3
- Effectiveness of Alternative Approaches to Providing Spectacles in Tanzanian Secondary School StudentsCompletedNCT00249275Not applicable
- Vision In Preschoolers Study (VIP Study)Status unknownNCT00038753Phase 3