Comparisons of the Astigmatic Power of Toric Intraocular Lens Using Three Toric Calculators: AcrySof, TECNIS, and iTrace Toric Calculator
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Cataract
- Sponsor
- Yonsei University
- Enrollment
- 100
- Locations
- 1
- Primary Endpoint
- Difference of toric intraocular lens power between three toric calculators
- Status
- Completed
- Last Updated
- 12 years ago
Overview
Brief Summary
Purpose of this study is to compare the astigmatic power of the toric IOL obtained from the AcrySof toric calculator, TECNIS toric calculator, and iTrace toric calculator in a group of patients with preoperative with-the-rule (WTR) and against-the-rule (ATR) corneal astigmatism. The study included 100 eyes with cataract and greater than 0.75 diopter of corneal astigmatism, and the subjects were divided into WTR and ATR group. Keratometric value was measured using autokeratometry, IOLMaster partial coherence interferometry (PCI), iTrace incorporating corneal topography and ray-tracing aberrometry. Based on measured values, toric IOL power calculations were performed using AcrySof, TECNIS and iTrace toric calculators.
Investigators
Eligibility Criteria
Inclusion Criteria
- •Subjects who planned to undergo cataract removal by phacoemulsification
- •Subjects with preoperative corneal astigmatism greater than 0.75 D, as determined by autokeratometry
Exclusion Criteria
- •Subjects with more than 2.74 D of corneal keratometric value from autokeratometry
- •a history of intraocular or corneal surgery and ocular trauma
- •biomicroscopic evidence of corneal disease that could affect corneal astigmatisms
- •contact lens wearer
Outcomes
Primary Outcomes
Difference of toric intraocular lens power between three toric calculators
Time Frame: Immediately after measurement
Comparison of the toric intraocular lens power calculated from Acrysof and TECNIS toric calculators using keratometric values measured by autokeratometry or IOLMaster PCI and that from iTrace toric calculator with keratometric value measurement using iTrace ray tracing wavefront aberrometry and iTrace simulated keratometry.