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NCT07257341: NORVIBAS
Pilot Study of Normative Range of Field of Binocular Single Vision in Adults in Singapore
trial testing Field of Binocular Single Vision in Binocular Visual Function in 30 participants. Currently enrolling.
30 June 2026
Quick facts
| Lead sponsor | Tan Tock Seng Hospital |
|---|---|
| Status | Recruiting now |
| Study type | OBSERVATIONAL |
| Enrollment | 30 |
| Start date | 15 October 2025 |
| Primary completion | 30 June 2026 |
| Estimated completion | 14 October 2026 |
| Sites | 1 location across Singapore |
Drugs / interventions tested
- Field of Binocular Single Vision
Conditions studied
- Binocular Visual Function — all drugs for Binocular Visual Function →
Sponsor
Tan Tock Seng Hospital
Who can join
Adults 21 to 59, any sex, with Binocular Visual Function. Patients with the condition only — healthy volunteers not accepted.
Sponsor's own description
The assessment and monitoring of the field of binocular single vision remains a crucial aspect of ophthalmological care, yet current clinical practice relies on normative standards established by Feibel \& Roper-Hall in 1974 that present significant limitations for contemporary application. The original study, conducted with a demographically homogeneous Caucasian population in St Louis using only "several" normal individuals, raises concerns regarding its applicability to Asian populations, particularly in Singapore, where ethnic and genetic factors may influence ocular characteristics. The limited sample size significantly increases the likelihood of Type II errors, whilst the temporal gap of over five decades introduces additional concerns regarding population changes, environmental factors, and advances in measurement techniques that have not been incorporated into current normative data. Given these substantial limitations in demographic representation, statistical power, and temporal relevance, there exists a pressing need to establish population-specific normative data for the field of binocular single vision in Singapore's adult population, which would provide more clinically relevant reference values and potentially improve diagnostic accuracy for ocular conditions in the local context.
Publications & conference data
No peer-reviewed publications indexed yet for this trial.
Verify or expand the search:
- PubMed search for NCT07257341
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Verify against primary sources
- ClinicalTrials.gov — authoritative US registry record
- WHO ICTRP — international registry index
- EU Clinical Trials Register
- Sponsor press releases (Google)
- Trial protocol + status: ClinicalTrials.gov NCT07257341 (US National Library of Medicine, public domain)
- Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
- Sponsor: as reported to ClinicalTrials.gov by Tan Tock Seng Hospital
- Last refreshed: 9 January 2026
Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT07257341.
Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing