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80 studies found for:    Open Studies | "Refractive Errors"
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Open Studies | "Refractive Errors" (80 records)
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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
Intervention:
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 Dispensing Study to Assess Visual Performance of Prototype Contact Lenses
Conditions: Presbyopia;   Refractive Error
Intervention: Device: Etafilcon A, Lotrafilcon B , Senofilcon A
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 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® Lens Centration in a Japanese Population
Conditions: Myopia;   Refractive Error
Interventions: Device: Delefilcon A contact lenses;   Device: Narafilcon A contact lenses
7 Not yet recruiting Tear Film Evaluation of Dailies® AquaComfort Plus® Multifocal and Toric
Condition: Refractive Error
Interventions: Device: Nelfilcon A multifocal contact lenses;   Device: Nelfilcon A toric contact lenses;   Device: Nelfilcon A sphere contact lenses
8 Unknown  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
9 Recruiting FID# 114657 in Contact Lens Wearers
Conditions: Refractive Error;   Symptoms of Ocular Dryness
Interventions: Drug: FID# 114657 eye drops (10 ml);   Drug: Saline eye drops (15 ml);   Device: Habitual contact lenses
10 Recruiting Comparison of Intraocular Lens Power Calculation Methods After Corneal Laser Refractive Surgery in Axial and Refractive Ammertropia
Conditions: Cataract;   Refractive Errors
Intervention:
11 Recruiting A New More Efficient Cycloplegia Scheme
Condition: Refractive Errors
Interventions: Drug: Cyclopentolate;   Drug: Cyclopentolate+tropicamide+phenylephrine
12 Unknown  The Effect of Gabapentin (Neurentin) and Pregabalin (Lyrica) in Pain Reduction After Photorefractive Keratectomy
Condition: Refractive Errors
Intervention: Drug: Pregabalin
13 Recruiting Safety and Effectiveness of Wavefront-guided LASIK for the Correction of Mixed Astigmatism
Condition: Astigmatism
Intervention: Device: LASIK
14 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)
15 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
16 Recruiting The Efficacy and Safety of Periocular Acupoint Stimulation on Myopia Progression in Children
Condition: Myopia
Intervention: Device: massager
17 Unknown  The Collaborative Longitudinal Evaluation of Ethnicity and Refractive Error (CLEERE) Study
Condition: Myopia
Intervention:
18 Unknown  The Role of SNP of ECM and MMP on the Development of Pathological High Myopia
Condition: Myopia
Intervention:
19 Recruiting Prospective Investigation of SUPRACOR Visual Outcomes of Presbyopic Hyperopic Patients With and Without Astigmatism
Condition: Hyperopic Presbyopia
Intervention: Device: SUPRACOR LASIK treatment
20 Recruiting Development of a Validated Chart for Intermediate Vision Assessment
Conditions: Myopia;   Hyperopia;   Presbyopia;   Astigmatism
Intervention: Other: Intermediate Visual acuity (IVA) assessment

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Indicates status has not been verified in more than two years