82 studies found for:    Open Studies | "Refractive Errors"
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Rank Status Study
1 Unknown  First-Sight Refractive Error Correction: Direct Comparison to Autorefraction Results in Children 7 to 18 Years of Age
Condition: Refractive Error
2 Unknown  Piggyback Sulcoflex Toric IOL for Correcting Refractive Error Following Corneal Transplantation
Conditions: Refractive Error;   Corneal Implantation;   Intraocular Lens Implantation
Interventions: Procedure: toric intraocular lens implantation;   Procedure: Sulcoflex intraocular lens implantation
3 Not yet recruiting Dispensing Study to Assess the Visual Performance of Optimised Prototype Contact Lenses
Conditions: Presbyopia;   Refractive Error
Interventions: Device: Etafilcon A;   Device: Nelfilcon A;   Device: Nesofilcon A;   Device: Somofilcon A
4 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 Recruiting Bifocal Lenses In Nearsighted Kids
Condition: Refractive Errors
Interventions: Device: Biofinity Multifocal D +1.50 add;   Device: Biofinity Multifocal D +2.50 add;   Device: Biofinity
6 Recruiting DAILIES TOTAL1® - Comparative Assessment of Tear Film Evaporation
Condition: Refractive Error
Interventions: Device: Delefilcon A contact lenses;   Device: Narafilcon A contact lenses;   Device: Somofilcon A contact lenses;   Other: No intervention
7 Not yet recruiting VisuMax Femtosecond Laser Small Incision Lenticule Extraction for the Correction of High Myopia
Conditions: Myopia;   Refractive Errors
Interventions: Procedure: Small incision lenticule extraction;   Drug: Tobramycin and dexamethasone;   Drug: Ofloxacin;   Drug: Proxymetacaine 0.5%;   Drug: Oxybuprocaine 0.4%
8 Recruiting A New More Efficient Cycloplegia Scheme
Condition: Refractive Errors
Interventions: Drug: Cyclopentolate;   Drug: Cyclopentolate+tropicamide+phenylephrine
9 Recruiting Comparison of Intraocular Lens Power Calculation Methods After Corneal Laser Refractive Surgery in Axial and Refractive Ammertropia
Conditions: Cataract;   Refractive Errors
10 Unknown  The Effect of Gabapentin (Neurentin) and Pregabalin (Lyrica) in Pain Reduction After Photorefractive Keratectomy
Condition: Refractive Errors
Intervention: Drug: Pregabalin
11 Recruiting Safety and Effectiveness of Wavefront-guided LASIK for the Correction of Mixed Astigmatism
Condition: Astigmatism
Intervention: Device: LASIK
12 Recruiting Corneal Epithelium Repair and Therapy Using Autologous Limbal Stem Cell Transplantation
Conditions: Corneal Disease;   Pterygium;   Myopia;   Hyperopia
Interventions: Procedure: LSCs and amniotic membrane (Modified Technique);   Procedure: Amniotic membrane only (Traditional Technique);   Procedure: PRK, LSCs, and amniotic membrane (Modified Technique);   Procedure: PRK only (Traditional Technique);   Drug: Levofloxacin;   Drug: Betamethasone;   Drug: Limbal stem cells (LSCs)
13 Not yet recruiting Myopia:the Role of Cone Opsin Mutations & Glasses That Control Axial Elongation
Condition: Myopia
Interventions: Other: Spectacles with red-blocking tint;   Other: Spectacles with holographic diffuser and color neutral tint;   Other: Spectacles with holographic diffuser and red-blocking tint;   Other: Spectacles with color neutral tint
14 Unknown  The Collaborative Longitudinal Evaluation of Ethnicity and Refractive Error (CLEERE) Study
Condition: Myopia
15 Not yet recruiting A Comparison of Two Devices for Measuring the Central Thickness of the Cornea Before and After Surgery (CECOT)
Condition: Disorders, Refractive
Intervention: Device: Central corneal thickness measurement
16 Not yet recruiting Comparison of Corneal Stromal Tissue Consumption (LATAC)
Condition: Disorders, Refractive
Intervention: Device: Measurement of stromal tissue ablation
17 Not yet recruiting High Resolution Wavefront-guided vs. Wavefront Optimized LASIK
Conditions: Nearsightedness;   Astigmatism
Intervention: Procedure: LASIK
18 Recruiting Evaluation of the Efficacy and Safety of PRX-100 in the Treatment of Early to Moderate Presbyopia
Condition: Presbyopia
Interventions: Drug: PRX-100;   Drug: Placebo
19 Recruiting Early Changes Among FLEx, LASIK and FS-LASIK
Conditions: Myopia;   Astigmatism
Interventions: Procedure: lenticule extraction;   Procedure: laser in situ keratomileusis;   Procedure: FS assisted laser in situ keratomileusis
20 Recruiting Changes Between Lenticule Extraction and Femtosecond Laser-assisted Laser in Situ Keratomileusis
Conditions: Myopia;   Astigmatism
Interventions: Procedure: lenticule extraction;   Procedure: femtosecond laser-assisted laser in situ keratomileusis

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Indicates status has not been verified in more than two years