Effect of simple myopic astigmatism and its axis on near visual performance for Thai alphabet in pseudophakic eyes

Status

Active, not recruiting

Phases

Early Phase 1

Study type

Interventional

Source

TCTR

Registry ID

TCTR20220925002

Enrollment

Registered

2022-09-25

Start date

2022-07-08

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

pseudophakia pseudoaccommodation reading performance thai alphabet myopic astigmatism thai mnread chart pseudophakia pseudoaccommodation reading performance thai alphabet myopic astigmatism thai mnread chart

Interventions

Trial lens set with multiple magnitude and axis of astigmatism

Experimental Device

Simulated myopic astigmatic blur

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: Thai alphabet reader with monofocal IOL for at least 1 month Older than 18 years Volunteer to take the test

Exclusion criteria

Exclusion criteria: Ocular pathology that cause visual loss Complication from cataract surgery Baseline Astigmatism > 3.00 D BCVA worse than 20/30

Design outcomes

Primary

Measure	Time frame
Reading performance immediate after intervention MNREAD chart	—

Secondary

Measure	Time frame
Visual acuity Immediate after intervention LogMar scale	—

Countries

Thailand

Contacts

Public Contactpakpum pakviwat

Mettapracharak Hospital

eformx.pp@gmail.com0812827289

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026