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To check the agreement of measurement of the difference in the luminance and brightness of a target using two different software, namely Freiburg Visual Acuity and Contrast Test and quick Contrast Sensitivity Function

Agreement of measurement of contrast sensitivity and its function using Freiburg Visual Acuity and Contrast Test and quick Contrast Sensitivity Function

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
CTRI
Registry ID
CTRI/2021/09/036289
Enrollment
32
Registered
2021-09-07
Start date
Unknown
Completion date
Unknown
Last updated
2022-10-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Interventions

None listed

Sponsors

Jivitha J
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: � Subjects with best corrected visual acuity 6/6 or better. � Subjects who can read and understand the English language. � No history of any previously diagnosed ocular conditions.

Exclusion criteria

Exclusion criteria: � Subjects with low vision � Subjects above the age limit of 40 years. � Subjects who cannot read and understand the English language. � Subjects already known to have contrast sensitivity deficits.

Design outcomes

Primary

MeasureTime frame
Contrast sensitivity in log units and Contrast sensitivity function curve. Timepoint: Baseline and 1 week.—

Secondary

MeasureTime frame
NILTimepoint: NIL—

Countries

India

Contacts

Public ContactJivitha J

Manipal College of Health Professions

avik.ray@manipal.edu9538529218

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Feb 4, 2026