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

Taipei Nobel Eye Clinic

Status: Completed

Conditions: Cataract Senile

Treatments: Device: routine cataract surgery and intraocular lens implantation

Study type: Observational

Funder types: Other

Identifiers

NCT06165796

004

Details and patient eligibility

About

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.

Enrollment: 331 patients

Sex: All

Ages: 50 to 80 years old

Volunteers: No 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.

Trial design

331 participants in 2 patient groups

previous LASIK group

Treatment:

Device: routine cataract surgery and intraocular lens implantation

previous non-LASIK group

Treatment:

Device: routine cataract surgery and intraocular lens implantation