The Effect of LASIK on the Calibration of IOL Formula Calculation: a Comparative Study

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT06165796

Enrollment

331

Registered

2023-12-11

Start date

2022-01-01

Completion date

2023-12-01

Last updated

2023-12-11

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

Conditions

Cataract Senile

Brief summary

Direct comparison study between previous LASIK or non-LASIK cataract eyes, the performance between non-LASIK and LASIK patients were (i) Ophthalmic examinations: UDVA, CDVA and uncorrected near visual acuity (UNVA) (40cm) and (ii) Refractive prediction error: defined as difference between postoperative sphere and target refraction.

Interventions

DEVICEroutine cataract surgery and intraocular lens implantation

routine cataract surgery and intraocular lens implantation

Study design

Observational model

CASE_CONTROL

Time perspective

RETROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

50 Years to 80 Years

Healthy volunteers

Inclusion criteria

* presence of cataract in both eyes * corrected distance visual acuity under 20/40 * Phacoemulsification cataract surgery was arranged for both eyes

Exclusion criteria

* complicated cataract * corneal opacities or irregularities * corneal astigmatism \> 1.50 diopter * amblyopia, anisometropia * surgical complications such as posterior capsular bag rupture or vitreous loss, IOL tilt or decentration * coexisting ocular pathologies, glaucoma, non-dilating pupil, history of intraocular surgery, or retinopathy * optic nerve or macular diseases * refusal or unable to maintain follow-up.

Design outcomes

Primary

Measure	Time frame
visual acuity	1 month after surgery
refractive prediction error	1 month after surgery

Countries

Taiwan

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026