Arcuate Incisions With Light Adjustable Lens for Astigmatism Correction in Lens Surgery (NCT07140653) | Clinical Trial Compass
RecruitingPhase 4
Arcuate Incisions With Light Adjustable Lens for Astigmatism Correction in Lens Surgery
United States60 participantsStarted 2025-09-02
Plain-language summary
This study aims to evaluate the safety and effectiveness of femtosecond laser arcuate corneal relaxing incisions (AK) combined with Light Adjustable Lens (LAL) implantation for correcting pre-existing corneal astigmatism in patients undergoing cataract or refractive lens exchange surgery. Postoperative assessments will focus on residual refractive astigmatism, visual outcomes, patient satisfaction, and the incidence of adverse events. Arcuate keratotomy and toric IOLs are well-established methods for astigmatism correction, and this study will compare their combined effectiveness using advanced femtosecond laser technology.
Who can participate
Age range21 Years
SexALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion criteria
✓. Subject must be aged ≥ 21 years at the time of eligibility visit.
✓. Subject must have a vector difference of 0.50 D or less in magnitude of pre-operative anterior corneal astigmatism as measured by the Pentacam AXL and the Zeiss IOLMaster 700 (Carl Zeiss Meditec).
✓. Subject must be able and willing to comply with the study examination procedures.
✓. Astigmatic treatment must require paired arcs \<45mm in length.
✓. Subject must be willing to complete the approved informed consent form.
✓. Subject must have elected to undergo lens extraction and Light Adjustable Lens (LAL) implantation.
✓. Subject must be willing and able to return for scheduled pre-op and follow-up examinations.
✓. Subject must have central 7 mm of clear cornea without vascularization.
Exclusion criteria
✕. Subject who has undergone previous corneal or intraocular surgery in the eye to be treated.
What they're measuring
1
Number of LAL adjustments required to achieve the desired refraction
✕. Subject with a history, signs or symptoms of ocular disease or atypical findings that would be contraindicated under standard of care for lens extraction surgery.
✕. Subject with neuro-ophthalmic disease.
✕. Diabetic or hypertensive subject with clinical evidence of retinal pathology that the investigator believes will significantly affect visual outcomes.
✕. Subject with macular degenerative pathology identified at the preoperative visit that the investigator believes will significantly affect visual outcomes.
✕. Subject with a history of steroid-responsive rise in intraocular pressure (IOP), preoperative IOP \>25 mmHg, or uncontrolled glaucoma in either eye.
✕. Subject with known lens/zonular instability.
✕. Subject who cannot achieve dilated pupillary diameter \> 6 mm.