# 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

> **NCT03441477** · — · COMPLETED · sponsor: **Nidek Co. LTD.** · enrollment: 225 (actual)

## Conditions studied

- Intraocular Pressure

## Interventions

- **DEVICE:** Nidek Tonoref III
- **DEVICE:** Haag-Streit Goldmann Manual Tonometer
- **DEVICE:** NIDEK CEM-530

## Key facts

- **NCT ID:** NCT03441477
- **Lead sponsor:** Nidek Co. LTD.
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2017-12-17
- **Primary completion:** 2019-01-16
- **Final completion:** 2019-01-16
- **Target enrollment:** 225 (ACTUAL)
- **Last updated:** 2023-07-03


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03441477

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03441477, "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". Retrieved via AI Analytics 2026-05-26 from https://api.ai-analytics.org/clinical/NCT03441477. Licensed CC0.

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