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OpenTrials
Completed

NCT Number: NCT06583954

SUBJECTIVE REFRACTION WITH LIGHTFIELD TECHNOLOGY

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).

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Key information

Conditions

Refractive Error Correction

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Institute of Optometry, FHNW, Olten, Canton of Solothurn, Switzerland

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Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Primary outcomes

  1. 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).

Secondary outcomes

  1. repeatability of all three methods for subjective refraction

    Time frame: within one week

Sponsors and collaborators

Lead sponsor

Daniela Nosch

Other

Registry information

Official study title

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

Important dates

Study start
2025
Primary completion
2025
Study completion
2025
First posted
Sep 4, 2024
Registry last updated
Sep 5, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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