Comparative Study of the NIDEK TONOREF III and the Haag-Streit Goldmann Manual Tonometer and Comparison of Pachymetry Values for NIDEK TONOREF III With the NIDEK CEM-530
Public ClinicalTrials.gov record NCT03441477. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Comparative Study of the NIDEK TONOREF III and the Haag-Streit Goldmann Manual Tonometer (Predicate) to Demonstrate Conformance to ANSI Z80.10-2014 Ophthalmic Instruments - Tonometers, to the FDA Guidance for Industry and FDA Staff, Tonometer-Premarket Notification [510(k)] Submissions, and to the Applicable Supplemental Information Sheet and Comparison of Pachymetry Values for NIDEK TONOREF III With the NIDEK CEM-530 (Predicate)
Study identification
- NCT ID
- NCT03441477
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not listed
- Lead sponsor
- Nidek Co. LTD.
- Industry
- Enrollment
- 225 participants
Conditions and interventions
Conditions
Interventions
- Nidek Tonoref III Device
- Haag-Streit Goldmann Manual Tonometer Device
- NIDEK CEM-530 Device
Device
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Dec 16, 2017
- Primary completion
- Jan 15, 2019
- Completion
- Jan 15, 2019
- Last update posted
- Jul 2, 2023
2017 – 2019
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Andover Eye Associates | Andover | Massachusetts | 01810 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03441477, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jul 2, 2023 · Synced Jul 23, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT03441477 live on ClinicalTrials.gov.