Visual function after implantation of a diffractive aspheric trifocal intraocular lens

Area of Science:

• Ophthalmology
• Biomedical Engineering
• Vision Science

Background:

• Cataract surgery often involves intraocular lens (IOL) implantation to restore vision.
• Trifocal IOLs aim to provide clear vision at multiple distances, reducing the need for corrective eyewear.
• Evaluating visual outcomes of specific trifocal IOL models is crucial for clinical decision-making.

Purpose of the Study:

• To assess the visual performance at distance, intermediate, and near after bilateral implantation of a specific diffractive aspheric trifocal intraocular lens (IOL).

Main Methods:

• A cohort of 102 patients (204 eyes) received bilateral AT LISA tri 839MP trifocal IOL implantation.
• Evaluated visual acuity (distance, intermediate, near) and contrast sensitivity under photopic and mesopic conditions over six months.
• Assessed uncorrected and distance-corrected visual acuities, defocus curves, and glare effects.

Main Results:

• No significant changes in visual acuity were observed across follow-up visits.
• Six months post-surgery, uncorrected visual acuities were comparable to preoperative corrected acuities.
• Nearly 87% of patients achieved 20/25 or better binocular distance-corrected near visual acuity; intermediate visual acuity was also favorable.

Conclusions:

• Bilateral implantation of the AT LISA tri 839MP trifocal IOL yields excellent visual outcomes at all tested distances.
• This trifocal IOL serves as an effective solution for reducing spectacle dependence following lensectomy.
• The study confirms the efficacy of this specific trifocal IOL in providing comprehensive visual rehabilitation.