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68 studies found for:    Open Studies | "Refractive Errors"
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Rank Status Study
1 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
2 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
3 Not yet recruiting International Multicenter Study on SMILE Surgery
Condition: Refractive Error
Interventions: Procedure: SMILE surgery;   Other: FS-LASIK surgery
4 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
5 Not yet recruiting Measurement Repeatability in Contemporary Aberrometry
Condition: Refractive Errors
Interventions: Device: Peramis aberrometry;   Device: iDesign aberrometry
6 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
7 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
8 Recruiting Visual and Optics Impact of Refractive Surgery
Condition: Refractive Disorders
Intervention:
9 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%
10 Recruiting Effect of Peripheral Defocus on Axial Growth in Hyperopes
Conditions: Hyperopia;   Amblyopia;   Anisohyperopia
Interventions: Device: Multifocal contact lenses;   Device: Single vision contact lenses
11 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
12 Recruiting Clinical Evaluation of HPT Treated Rigid Contact Lenses Made From Roflufocon D
Condition: Ametropia
Interventions: Device: roflufocon D contact lenses;   Device: RGP contact lenses made from roflufocon D
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 Not yet recruiting CLEAR CARE® PLUS for Presbyopic Contact Lens Wearers
Condition: Presbyopia
Interventions: Device: Clear Care® Plus Contact Lens Solution;   Device: Habitual Multi-Purpose Contact Lens Solution;   Device: Habitual Contact Lenses
15 Not yet recruiting OPTI-FREE® PureMoist® for Presbyopic Contact Lens Wearers
Condition: Presbyopia
Interventions: Device: Opti-Free® PureMoist® contact lens solution;   Device: Habitual Multi-Purpose Contact Lens Solution;   Device: Habitual Contact Lenses
16 Not yet recruiting Safety, Tolerability and Efficacy of PresbiDrops in Presbyopic Subjects
Condition: Presbyopia
Interventions: Drug: PresbiDrops;   Drug: Placebos
17 Recruiting Comparison Between FS- LASIK and FS-SMILE for Correction of Myopia and Myopic Astigmatism
Condition: Myopia
Interventions: Procedure: FS-SMILE;   Procedure: FS- LASIK;   Device: Visumax device;   Device: FS 200 device
18 Not yet recruiting Combined Atropine With Orthokeratology in Childhood Myopia Control (AOK) -A Randomized Controlled Trial
Condition: Myopia
Interventions: Drug: 0.01% atropine eye drops;   Device: ortho-k
19 Recruiting Evaluating and Improving Functional Driving Vision of Patients With Astigmatism: Phase 3
Condition: Astigmatism
Interventions: Device: Placebo Lenses;   Device: Spherical Lenses;   Device: Toric Lenses
20 Not yet recruiting Influence of Trabeculectomy and Phaco-trabeculectomy on Corneal Astigmatism
Conditions: Astigmatism;   Glaucoma
Interventions: Device: Biometry;   Device: Refraction;   Device: Corneal Topography

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Study has passed its completion date and status has not been verified in more than two years.