PROOF OF CONCEPT OF A NEW DEVICE FOR SUBJECTIVE REFRACTION WITH LIGHTFIELD TECHNOLOGY

Daniela Nosch2 sites in 1 country120 target enrollmentFebruary 15, 2025

ConditionsRefractive Error Correction

Overview

Phase: Not Applicable
Intervention: Not specified
Conditions: Refractive Error Correction
Sponsor: Daniela Nosch
Enrollment: 120
Locations: 2
Primary Endpoint: precision of determination of refractive error
Status: Completed
Last Updated: 7 months ago

Overview Investigators Eligibility Criteria Outcomes Sites Similar Trials

Overview

Brief Summary

The aim of this study is to test whether it is possible in principle to determine defective vision using light field technology. The measurements with this first prototype will be compared with the results of the conventional method for subjective refraction determination and those using a phoropter (Vision R-800 phoropter).

Registry

clinicaltrials.gov

Start Date

February 15, 2025

End Date

August 30, 2025

Last Updated

7 months ago

Study Type

Observational

Sex

All

Investigators

Sponsor

Daniela Nosch

Responsible Party

Sponsor Investigator

Principal Investigator

Daniela Nosch

Lecturer

University of Applied Sciences and Arts Northwestern Switzerland

Eligibility Criteria

Inclusion Criteria

•Minimum age of 18 years
•Best corrected visual acuity ≥ 0.8 (logMAR ≤ 0.1).
•Dioptric range for hypermetropia: ≤ +4.50 D.
•Dioptric range for myopia: ≥ -6.50 D.
•Dioptric range for cylinder: ≤ -2.00 D.
•Good general health, i.e.no systemic disease such as diabetes or rheumatism which could influence ocular health
•No ocular pathology or history of (intra)ocular surgery except for cataract surgery

Exclusion Criteria

•• Contact lens wear during the days of visit
•Binocular vision problems (e.g. amblyopia, strabismus).
•Inability to follow the procedures of the investigation, such as language problems, psychological disorders and dementia

Outcomes

Primary Outcomes

precision of determination of refractive error

Time Frame: within one week

To explore if this prototype CREAL device based on LightField Technology can determine the refractive error reliably, in comparison to well-established methods such as subjective refraction with a trial frame and with the phoropter Vision-R 800 (Essilor SA).