Effects of 1% cyclopentatrol hydrochloride on pupil diameter and reftactive error of Chinese children with dark brown iris and its associated factors

Effects of 1% cyclopentatrol hydrochloride on pupil diameter and reftactive error of Chinese children with dark brown iris and its influencing factors

Status

Recruiting

Phases

Phase 4

Study type

Observational

Source

ChiCTR

Registry ID

ChiCTR1900025774

Enrollment

Unknown

Registered

2019-09-07

Start date

2019-09-17

Completion date

Unknown

Last updated

2019-11-04

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

Conditions

Refractive error

Interventions

single arm:1% cyclopentatrol hydrochloride

Eligibility

Sex/Gender

All

Age

4 Years to 15 Years

Inclusion criteria

Inclusion criteria: 1. Chinese children with dark brown irises; 2. Aged 6 to 15 years; 3. No other eye diseases except ametropia.

Exclusion criteria

Exclusion criteria: 1. Ocular diseases with manifest strabismus, nystagmus, ptosis, corneal scar, cataract and other diseases affecting instrument detection; 2. Iop was higher than 25mmHg; 3. Medication history that affects pupil size and accommodation, such as low concentration atropine; 4. Wearing history of contact lens, such as orthokeratology lens; 5. History of eye surgery and trauma; 6. Unable to cooperate with the inspection.

Design outcomes

Primary

Measure	Time frame
pupil diameter;refractive error;	—

Secondary

Measure	Time frame
Axial length;IOP;Lag of accommodation;	—

Countries

China

Contacts

Public ContactRuihua Wei

Tianjin Medical University Eye Hospital

rwei@tmu.edu.cn+86 13920685016

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 15, 2026