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Completed

NCT Number: NCT06165796

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

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.

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Key information

Conditions

Cataract Senile

Age range

50 year–80 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Taipei Nobel Eye Clinic

Taipei, Taiwan

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

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.

Treatment and study plan

routine cataract surgery and intraocular lens implantation

Device

routine cataract surgery and intraocular lens implantation

Primary outcomes

  1. visual acuity

    Time frame: 1 month after surgery

  2. refractive prediction error

    Time frame: 1 month after surgery

Sponsors and collaborators

Lead sponsor

Taipei Nobel Eye Clinic

Other

Registry information

Important dates

Study start
2022
Primary completion
2023
Study completion
2023
First posted
Dec 11, 2023
Registry last updated
Dec 11, 2023

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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