Visual outcome and refractive error in cataract using two formulas

Visual Outcome and Accuracy of Intraocular Lens Calculation Using Barrett Universal II and SRK/T Formulas in Cataract Surgery

Status

Recruiting

Phases

Early Phase 1

Study type

Interventional

Source

TCTR

Registry ID

TCTR20210421005

Enrollment

340

Registered

2021-04-21

Start date

2021-04-21

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

Patients undergo phacoemulsification cataract surgery with IOL implantation Cataract surgery, Intraocular lens calculation, Barrett Universal II, SRK/T

Interventions

We will investigate the visual outcome and accuracy of intraocular lens calculation using formulas

Barrett universal II and compare parameter of refractive error with SRK/T formulas (historical case control) in cataract surgery

Experimental No treatment

IOL selected with BUII formular

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: Inclusion criteria phacoemulsification cataract surgery with in-the-bag insertion of IOLage more than 18 years corneal astigmatism < 3.0 Diopter Valid IOL measurements with swept-source biometry Naive eyes

Exclusion criteria

Exclusion criteria: Complicated cataract surgery Eyes not completed to first months of follow-up

Design outcomes

Primary

Measure	Time frame
Predictive refraction error 1 month after surgery Diopter	—

Secondary

Measure	Time frame
Visual acuity 1 month after surgery logMAR	—

Countries

Thailand

Contacts

Public ContactMantapond Ittarat

Surin Hospital andSchool of ophthalmology, Suranaree University of Technology, Thailand

mantapornittarat@gmail.com0655494536

Outcome results

None listed

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