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Found 70 studies with search of: Open Studies | "Refractive Errors"
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Rank Status Study
1 Not yet recruiting First-Sight Refractive Error Correction: Direct Comparison to Cycloplegic Refraction and Autorefraction Results in Children 7 to 18 Years of Age
Condition: Refractive Error
Intervention:
2 Recruiting The Effect of Gabapentin (Neurentin) and Pregabalin (Lyrica) in Pain Reduction After Photorefractive Keratectomy
Condition: Refractive Errors
Intervention: Drug: Pregabalin
3 Recruiting Retrospective Study of the Health Benefits of Ultra-Violet Filtering Contact Lenses
Condition: Refractive Errors
Intervention:
4 Not yet recruiting Optical Defocus to Stimulate Eye Elongation in Hyperopia
Conditions: Hyperopia;   Refractive Error
Interventions: Device: Simultaneous Vision Bifocal Soft Contact Lenses;   Device: Single Vision Soft Contact Lenses
5 Unknown † Epithelial Healing and Visual Outcomes Using Omega-3 Therapy Before and After Photorefractive Keratectomy (PRK) Surgery
Condition: Refractive Error
Intervention: Dietary Supplement: Omega-3 Fatty Acid Supplements
6 Recruiting Safety and Efficacy Study to Evaluate the Treatment of Both Near and Distance Vision in a Simultaneous Laser Procedure
Conditions: Myopia;   Hyperopia;   Presbyopia;   Refractive Error
Intervention: Procedure: Supracor
7 Recruiting Effect of Contact Lens Wear on Immune Cell Density and Morphology of the Ocular Surface
Conditions: Myopia;   Refractive Error
Interventions: Drug: ReNu MultiPlus® MultiPurpose Solution;   Drug: OPTI-FREE® RepleniSH®;   Drug: Clear Care®
8 Unknown † The Collaborative Longitudinal Evaluation of Ethnicity and Refractive Error (CLEERE) Study
Condition: Myopia
Intervention:
9 Recruiting Project Gullstrand - European Project for the Determination of Average Biometric Values of Human Eyes
Condition: Normal Subjects, Ametropia
Intervention:
10 Recruiting Intrastromal Correction of Ametropia by a Femtosecond Laser
Conditions: Presbyopia;   Myopia;   Hyperopia;   Astigmatism
Interventions: Device: Intrastromal Correction of Presbyopia;   Device: Intrastromal correction of Myopia;   Device: Intrastromal Correction of Hyperopia;   Device: Intrastromal Correction of Myopia incl. Astigmatism;   Device: Intrastromal Correction of Hyperopia incl. Astigmatism
11 Unknown † Ocular Response Analyzer Assessment of Intraocular Pressure and Corneal Biomechanical Properties in Myopic and Anisometropic Patients Under Atropine Treatment
Conditions: Myopia;   Anisometropia
Intervention:
12 Not yet recruiting Multifocal NonDispensing Study
Condition: Presbyopia
Interventions: Device: omafilcon A multifocal;   Device: lotrafilcon B multifocal
13 Recruiting Daily Wear Corneal Infiltrative Event Study
Conditions: Myopia;   Hyperopia;   Corneal Infiltrative Events
Intervention: Device: lotrafilcon A contact lenses
14 Recruiting Evaluation of Investigational CooperVision DW Silicone Hydrogel Lens Compared to Silicone Hydrogel Lens on US Market
Condition: Myopia
Interventions: Device: senfilcon A contact lens;   Device: investigational enfilcon A
15 Unknown † Aberration-Free Refraction Correction
Condition: Myopia
Intervention:
16 Recruiting Clinical Evaluation of Toric Intraocular Lens Made by Aurolab
Condition: Astigmatism
Intervention: Procedure: intra ocular lens
17 Recruiting Evaluation of Daytime Corneal Swelling During Wear of Galyfilcon A Lenses
Condition: Myopia
Interventions: Device: galyfilcon A;   Device: galyfilcon A plus;   Device: lotrafilcon A;   Device: polymacon;   Other: spectacles
18 Recruiting Lacritin and Heparanase Levels in Human Tears After Laser Refractive Surgery
Condition: Myopia
Intervention: Other: Tear collection
19 Recruiting Optical Quality, Threshold Target Identification, and Military Target Task Performance After Advanced Keratorefractive Surgery
Conditions: Myopia;   Myopic Astigmatism
Interventions: Procedure: WFG PRK;   Procedure: WFG LASIK;   Procedure: WFO PRK;   Procedure: WFO LASIK
20 Recruiting An Outcomes Study Comparing the Intralase FS 60 to the Intralase iFS When Performing LASIK Surgery for Nearsightedness
Conditions: Myopia;   Astigmatism
Intervention: Procedure: LASIK with the iFS femtosecond laser

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† Indicates status has not been verified in more than two years
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