0.5% Cyclopentolate-Tropicamide Versus 1% Cyclopentolate alternating with 1% Tropicamide for Refraction in Pediatric Patients with Darkly Pigmented Irides:

Status

Active, not recruiting

Phases

Phase 2Phase 3

Study type

Interventional

Source

TCTR

Registry ID

TCTR20250312005

Enrollment

Registered

2025-03-12

Start date

2024-01-16

Completion date

Unknown

Last updated

2026-08-03

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

Conditions

Pediatric refraction Pediatric refraction,cyclopentolate,tropicamide

Interventions

A subject 1 autorefraction for baseline 2. takes combination of 0.5% cyclopentolate and 0.5% tropicamide 2 doses both eyes and wait 30 minutes 3.autorefraction after eyedrops,A subject (same person,

Experimental Drug,Active Comparator Drug

0.5% cyclopentolate- 0.5% tropicamide,1% cyclopentolate- 1%tropicamide

Eligibility

Sex/Gender

All

Age

5 Years to 13 Years

Inclusion criteria

Inclusion criteria: Children who would like to check for refraction and have good co operation in examination.

Exclusion criteria

Exclusion criteria: -Children who are allergic to cyclopentolate or tropicamide -Chlidren who are in cooperative in examination -Children who have aphakia or pseudophakia.

Design outcomes

Primary

Measure	Time frame
spherical equivalent baseline and 30 min after eye autorefraction	—

Secondary

Measure	Time frame
pupil size baseline and 30 min after eyedrops pupillometer	—

Countries

Thailand

Contacts

Public Contactchavisa bunyavee

Navamindradhiraj University

chavisa@nmu.ac.th66649393590

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 10, 2026