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98 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 Recruiting Prospective S&E Study of Wavefront-guided PRK for Myopia With iDesign Advanced Wavescan Studio™ System and Star S4 IR™
Condition: Stable Myopic Refractive Error, With or Without Astigmatism
Intervention: Device: STAR S4 IR laser with iDesign
4 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;   Device: 58% Poly-HEMA;   Device: Omafilcon A
5 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
6 Not yet recruiting Initial Performance of a Daily Disposable Contact Lens Featuring Molded Marks
Condition: Refractive Error
Interventions: Device: Delefilcon A Multifocal Contact Lenses with Molded Mark;   Device: Delefilcon A Multifocal Contact Lenses
7 Not yet recruiting International Multicenter Study on SMILE Surgery
Condition: Refractive Error
Interventions: Procedure: SMILE surgery;   Other: FS-LASIK surgery
8 Recruiting Clinical Evaluation of the Safety and Efficacy of FID 120947A
Condition: Refractive Error
Interventions: Device: FID 120947A contact lens disinfecting solution;   Device: Soft contact lenses;   Device: SCL preservative solution
9 Recruiting Study to Evaluate the Safety and Efficacy of HI-BRITE Large Diameter Rigid Gas Permeable Contact Lens
Condition: Refractive Errors
Intervention: Device: HI-BRITE Large Diameter Rigid Gas Permeable Contact Lens
10 Not yet recruiting Measurement Repeatability in Contemporary Aberrometry
Condition: Refractive Errors
Interventions: Device: Peramis aberrometry;   Device: iDesign aberrometry
11 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%
12 Unknown  A New More Efficient Cycloplegia Scheme
Condition: Refractive Errors
Interventions: Drug: Cyclopentolate;   Drug: Cyclopentolate+tropicamide+phenylephrine
13 Unknown  Comparison of Intraocular Lens Power Calculation Methods After Corneal Laser Refractive Surgery in Axial and Refractive Ammertropia
Conditions: Cataract;   Refractive Errors
14 Unknown  The Effect of Gabapentin (Neurentin) and Pregabalin (Lyrica) in Pain Reduction After Photorefractive Keratectomy
Condition: Refractive Errors
Intervention: Drug: Pregabalin
15 Recruiting Visual and Optics Impact of Refractive Surgery
Condition: Refractive Disorders
16 Recruiting Effect of Peripheral Defocus on Axial Growth in Hyperopes
Conditions: Hyperopia;   Amblyopia;   Anisohyperopia
Interventions: Device: Multifocal contact lenses;   Device: Single vision contact lenses
17 Unknown  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)
18 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
19 Unknown  The Collaborative Longitudinal Evaluation of Ethnicity and Refractive Error (CLEERE) Study
Condition: Myopia
20 Not yet recruiting Efficacy of Scleral Contact Lenses for Daily Wear for Regular and Irregular Refractive Errors Compared to Habitually Worn Scleral Lenses
Condition: Scleral Lens Wearers
Intervention: Device: scleral contact lens

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Indicates status has not been verified in more than two years