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Study to test accuracy of a simple and low cost device to do eye examination for refractive error

Investigating accuracy of a simple, portable refractive error estimation device (ClickCheckTM) compared with standard subjective refraction â?? a crossover trial

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
CTRI
Registry ID
CTRI/2020/10/028564
Enrollment
1100
Registered
2020-10-22
Start date
Unknown
Completion date
Unknown
Last updated
2021-11-24

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

Conditions

Health Condition 1: H526- Other disorders of refraction

Interventions

Intervention1: ClickCheck Refraction: Refraction measurement using the ClickChec device Intervention2: NIL: NIL Control Intervention1: Subjective Refraction: Refraction measurement using standard Subj

Sponsors

ESSILOR AMERA PTE LIMITED SINGAPORE
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: 1) Are of age between 7 and 70 years 2) Attend general ophthalmology units of AEH

Exclusion criteria

Exclusion criteria: 1) Have refractive error beyond the measurement range of ClickCheckTM (Spherical correction +8D to -11D and Cylindrical correction 2) Present with ocular injury or infections 3) Present with any type of media opacity with vision 4) Are on medications that can influence the refraction measurement 5) Are physically or mentally challenged

Design outcomes

Primary

MeasureTime frame
Evidence on the accuracy of refraction estimation using ClickCheckTM in comparison with subjective refraction and a conventional autorefractorTimepoint: 6 months—

Secondary

MeasureTime frame
Submission of the findings in a peer reviewed journal.Timepoint: 12 months—

Countries

India

Contacts

Public ContactSoundarya Venkatachalam

Lions Aravind Institute of Community Ophthalmology

sanil@aravind.org9894279089

Outcome results

None listed

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