# Visual outcomes and quality of life after bilateral extended depth of field, bifocal, and mix-and-match IOL implantation

## TL;DR

This study compares three types of intraocular lenses for cataract patients, finding that all improve quality of life, with specific benefits for intermediate and near vision.

## Contribution

The study provides a direct comparison of visual outcomes and quality of life for three IOL implantation strategies in cataract patients.

## Key findings

- Mix-and-match and bilateral EDoF IOL groups showed better intermediate visual acuity.
- Bilateral bifocal and mix-and-match groups had better distance-corrected near vision.
- All groups reported similar quality of life and photic symptoms.

## Abstract

To evaluate the visual outcomes and vision-related quality of life among three intraocular lens (IOL) implantation strategies: bilateral extended depth of field (EDoF) IOL, bilateral bifocal IOL, and a mix-and-match approach.

In this prospective, non-randomized, observational study, patients with bilateral age-related cataracts selected their preferred IOL implantation type and were categorized into three groups accordingly. Three months after surgery, assessments of corrected and uncorrected binocular visual acuity at far, intermediate, and near distances were conducted, along with refraction, defocus curve, stereoacuity, vision-related quality of life, and photic symptoms.

A total of 76 patients (152 eyes) were included. All patients achieved uncorrected distance visual acuity (UDVA) and best corrected distance visual acuity (BCDVA) of 20/32 or better in all groups. Binocular uncorrected intermediate visual acuity and distance-corrected intermediate visual acuity were superior in the mix-and-match and bilateral EDoF IOL groups (both P < 0.01). The bilateral bifocal IOL and mix-and-match groups demonstrated better distance-corrected intermediate visual acuity (both P < 0.05). No significant differences were observed among the three groups in UDVA, BCDVA, or uncorrected near visual acuity (UNVA) (P > 0.05). All groups reported similar outcomes for stereoacuity, vision-related quality of life, and photic symptoms (P > 0.05).

All three IOL strategies provided favorable vision-related quality of life, with the mix-and-match and bilateral EDoF IOL groups showing superior intermediate vision. The mix-and-match and bilateral bifocal IOL groups demonstrated better distance-corrected bilateral near vision performance, despite comparable UNVA among the three groups. These approaches remain valuable alternatives for providing optimal visual outcomes in regions where full vision range IOL are not yet accessible.