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 International Multicenter Study on SMILE Surgery
Condition: Refractive Error
Interventions: Procedure: SMILE surgery;   Other: FS-LASIK surgery
3 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
4 Not yet recruiting Measurement Repeatability in Contemporary Aberrometry
Condition: Refractive Errors
Interventions: Device: Peramis aberrometry;   Device: iDesign aberrometry
5 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
6 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
7 Recruiting Visual and Optics Impact of Refractive Surgery
Condition: Refractive Disorders
Intervention:
8 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%
9 Recruiting Effect of Peripheral Defocus on Axial Growth in Hyperopes
Conditions: Hyperopia;   Amblyopia;   Anisohyperopia
Interventions: Device: Multifocal contact lenses;   Device: Single vision contact lenses
10 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
11 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
12 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
13 Recruiting Assessment of Near Vision Capacity in Different Light Intensities
Condition: Presbyopia
Intervention: Procedure: BB-Phaco
14 Recruiting Functional Assessment of ADL in Patients Who Underwent Bifocal and Trifocal Presbyopic Correction
Condition: Presbyopia
Interventions: Procedure: Phaco with Restor;   Procedure: Phaco with Panoptix
15 Recruiting Comparison of Next Generation Laser Techniques of Myopia Correction: iDesign vs. SMILE
Condition: Myopia
Interventions: Other: iDesign;   Other: SMILE
16 Not yet recruiting Comparison of Topography Guided LASIK With WaveLight® EX500 to SMILE With Zeiss VisuMax
Conditions: Myopia;   Astigmatism
Interventions: Procedure: Topography Guided LASIK;   Procedure: Small Incision Lenticular Extraction;   Device: WaveLight EX500 Excimer Laser System;   Device: VisuMax Surgical Laser
17 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
18 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
19 Not yet recruiting Safety, Tolerability and Efficacy of PresbiDrops in Presbyopic Subjects
Condition: Presbyopia
Interventions: Drug: PresbiDrops;   Drug: Placebos
20 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

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