VisionApp - Refraction and Presbyopia

Part of paid clinical trials in Bloomington, Indiana.

Sponsor
Indiana University
Study ID
NCT07570602
Status
Completed

Conditions

  • Presbyopia
  • Refractive Errors

Eligibility Criteria

Sex
ALL
Age
40 Years - N/A
Healthy Volunteers
Accepted

Interventions

  • VisionApp — DEVICE
    VisionApp is an app which runs on a smartphone or other device which uses the distance between the user's face and the phone to determine refractive error, while the user looks at different targets (lines, letters, words, etc).

Study Details

Recent Android mobile device technology is available which allows user-measured refractive error and reading add power. This technology could be quite useful to the clinical and research community. The current study aims to evaluate the accuracy, repeatability, and reproducibility of one such technology by VisionApp, specifically with regard to refraction and presbyopia. VisionApp is an app which runs on a smartphone or other device which uses the distance between the user's face and the phone to determine refractive error, while the user looks at different targets (lines, letters, words, etc).

Key Dates

Start date
Jul 5, 2023
Status verified
Jun 2026
Primary completion
Jul 24, 2023
Completion
Jul 24, 2023

Study Design

Enrollment
16 participants (actual)
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
DIAGNOSTIC

Arms

  • Experimental: Visual Assessment
    The subject will look at a phone running the VisionApp program set at a particular distance (calibration) and then be instructed to move further from, or closer to the phone, until a given target (letter, lines, patterns, etc) are more or less clear.

Primary Outcome Measure

Spherical Equivalent Refractive Error [ Time Frame: Day 1 ]

Locations (1)

FacilityCityStateZIPSite coordinators
Clinical Optics Research LabBloomingtonIndiana47405-

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Clinical Optics Research Lab· Bloomington, IN

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