Postoperative Rotational Dynamics of Three Toric Intraocular Lens Designs
Trial Parameters
Brief Summary
This prospective comparative cohort study evaluates and compares postoperative rotational stability and time-course dynamics of three commercially available toric intraocular lenses (TECNIS Toric II \[ZCU\], AcrySof IQ Toric, and AT TORBI 709M) after phacoemulsification cataract surgery. Rotation is quantified by registering postoperative retroillumination photographs to the end-of-surgery baseline using iris/scleral landmarks, with follow-up at postoperative day 1, day 3, week 1, week 2, month 1, and month 3. Associations between rotational outcomes and ocular biometric parameters are analyzed using linear mixed-effects models to inform individualized IOL selection and perioperative management.
Eligibility Criteria
Inclusion Criteria: * Adults aged 18 years or older with age-related cataract scheduled for phacoemulsification cataract surgery. * Presence of regular corneal astigmatism requiring toric intraocular lens implantation. * Eligible for implantation of one of the three study toric intraocular lenses based on preoperative evaluation. * Ability to understand the study procedures and provide written informed consent. Exclusion Criteria: * History of prior ocular surgery in the study eye. * History of ocular trauma in the study eye. * Irregular corneal astigmatism or corneal pathology affecting reliable biometric measurement. * Intraoperative complications, including anterior capsular tear or posterior capsular rupture. * Inadequate pupillary dilation during surgery or postoperative examinations. * Evidence of zonular weakness, zonular dialysis, or lens subluxation. * Active ocular infection or inflammation. * Any other ocular or systemic condition judged by the investigator to potentially af