Effect of Lens Presentation on the Clinical Oculomotor Assessment at Near

Status Completed

Clinical Trial Summary

This study will compare near clinical oculomotor parameters (heterophoria, vergence ranges, AC/A and accommodative findings) measured when lenses and/or prisms are introduced using three different instruments namely: (i) a standard manual phoropter, (ii) an electronic phoropter and (iii) a wearable adaptive refractor (VisionFit).

Clinical Trial Description

Previous studies have demonstrated differences in a number of near oculomotor parameters [e.g., heterophoria, accommodative convergence to accommodation (AC/A) ratio] when measured in a manual phoropter versus a trial frame. These differences may be due to variations in proximal vergence, differences in head and eye position and restriction of the peripheral visual field. Further, a number of standard clinical oculomotor procedures require the use of Risley rotary prisms. While prism is typically introduced in a smooth, ramp-like fashion with manual phoropters, step changes in prism are created with electronic phoropters. The precise effect of these variations on clinical measurements is unclear. Accordingly, after a routine refractive examination, a standard clinical near assessment (comprising near heterophoria, AC/A ratio, horizontal vergence ranges, amplitude of accommodation and negative and positive relative accommodation) will be carried out on the same individuals through: (i) a standard manual phoropter (American Optical model 11625), (ii) an electronic phoropter (Topcon CV-5000) and (iii) a wearable adaptive refractor (VisionFit). The latter resembles a trial frame mounted on a helmet carrier (similar to a binocular indirect ophthalmoscope headset) but includes adaptive lenses that can be changed electronically. ;

Study Design

Related Conditions & MeSH terms

Vision Disorders

Clinical Trial Details

NCT number	NCT02679313
Study type	Interventional
Source	State University of New York College of Optometry
Contact
Status	Completed
Phase	N/A
Start date	February 2016
Completion date	September 2016

View Details

See also
Status	Clinical Trial	Phase
Active, not recruiting	`NCT03872479` - Single Ascending Dose Study in Participants With LCA10	Phase 1/Phase 2
Active, not recruiting	`NCT02595502` - Clinical Evaluation of Two Silicone Hydrogel Daily Disposable Contact Lenses	N/A
Completed	`NCT02485054` - A Predictive Score for the Ischemic Etiology of a Transient Visual Disturbances (VASCO)
Completed	`NCT00985231` - Performance Evaluation of Contact Lenses Among a Population of Adapted Contact Lens Wearers	N/A
Recruiting	`NCT05208658` - Characteristics of the Vergence Responses of Binocularly Normal Subjects After a Vision Therapy Protocol	N/A
Recruiting	`NCT06077682` - Cycloplegic Refraction in Pediatric Patients With Esotropia	Phase 4
Active, not recruiting	`NCT04123626` - A Study to Evaluate the Safety and Tolerability of QR-1123 in Subjects With Autosomal Dominant Retinitis Pigmentosa Due to the P23H Mutation in the RHO Gene	Phase 1/Phase 2
Recruiting	`NCT04693247` - Handheld Device Compared With a Standard Eye Care Diagnostic Device in Measuring Ophthalmic Refraction	N/A
Recruiting	`NCT06451172` - Novel Antisense Oligonucleotide Eye Drops for Treating Antibiotic-Resistant Bacterial Keratitis	Early Phase 1
Completed	`NCT01318577` - Study of A New Contact Lens Cleaning and Disinfecting Solution	N/A
Completed	`NCT03763721` - The ADVISE Study: Advanced Visualization In Corneal Surgery Evaluation	N/A
Completed	`NCT05602402` - To Evaluate the Efficacy and Safety of CAEP-01 on Eye Strain in Children With Heavy Screen Use	N/A
Not yet recruiting	`NCT06085430` - Kubota Glass Parameter Refinement Study	N/A
Completed	`NCT04347564` - Usability of the Software MacuFix for the Categorization of Metamorphopsia
Completed	`NCT01546402` - Intraoperative Dexamethasone Implant Improves Outcome of Cataract Surgery With Diabetic Macular Edema	Phase 4
Completed	`NCT01698788` - Effect of Intraoperative Dexamethasone Implant in Taut Posterior Hyaloid Removal in Diabetic Macular Edema	N/A
Completed	`NCT03169855` - Validation of Mesopic and Photopic Contrast Vision Tests With Respect to Nighttime Driving Ability
Terminated	`NCT03913130` - Extension Study to Study PQ-110-001 (NCT03140969)	Phase 1/Phase 2
Recruiting	`NCT03479021` - SPOT Vision Screening
Recruiting	`NCT05600140` - Viewing Strategy Training in Children With (Cerebral) Visual Impairment	N/A