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To compare four instruments used to measure intraocular pressure. Corvis - st, noncontact , icare and applanation tonometers are compared

CLINICAL COMPARISON OF CORVIS-ST TONOMETER WITH NONCONTACT, ICARE AND APPLANATION TONOMETERS IN EYES WITH DIFFERENT RANGES OF CENTRAL CORNEAL THICKNESS

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
CTRI
Registry ID
CTRI/2015/07/006030
Enrollment
500
Registered
2015-07-20
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

None listed

Interventions

None listed

Sponsors

NETHRADHAMA SUPERSPECIALITY EYE HOSPITAL
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: Patients attending the general outpatient department at our center, who are willing to sign the informed consent are enrolled in the study. Patients between 20 - 40 years of age, with healthy cornea are included in the study. One eye of each patient is included

Exclusion criteria

Exclusion criteria: - Anterior segment disease (keratitis, corneal ectasias, post keratoplasty, degenerations, dystrophies) - Previous history of refractive surgeries - Known cases of glaucoma either primary or secondary - History of ocular trauma - Astigmatism > +/- 4D - IOP > 40 mm of Hg with corneal oedema - Posterior segment disorders

Design outcomes

Primary

MeasureTime frame
To compare IOP assessment of Corvis â?? ST with AT, NCT and Icare tonometer readingsTimepoint: Six months from the time of recuitment

Secondary

MeasureTime frame
To assess the variation in IOP recording with the above instruments in eyes with different ranges of central corneal thickness i.e., thin cornea â?¤535 microns, average cornea 540-560 microns and thick cornea â?¥565 microns .Timepoint: After recruitment outcome will be assessed at the end of 6 months along with primary outcome

Countries

India

Contacts

Public ContactGayathri B

NETHRADHAMA SUPERSPECIALITY EYE HOSPITAL

gayathridr28@gmail.com9880114470

Outcome results

None listed

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