# Clinical outcomes of quad-loop intraocular lenses: trifocal, bifocal and toric types

## TL;DR

This study evaluates how well quad-loop intraocular lenses improve vision and patient satisfaction after cataract surgery.

## Contribution

The study provides clinical evidence on the effectiveness of trifocal, bifocal, and toric quad-loop intraocular lenses in cataract surgery.

## Key findings

- 67.4% of eyes achieved good distance visual acuity (logMAR 0.2 or better) by day 30 post-surgery.
- Patient satisfaction was high with few complaints of glare or halos.
- Quad-loop lenses showed effective visual acuity improvement across different types.

## Abstract

The purpose of this study was to assess visual outcomes and patient
satisfaction following cataract surgery involving the implantation of
quad-loop intraocular lenses, including trifocal, bifocal, and toric
variants.

Information was obtained from both physical and electronic medical records of
patients who underwent phacoemulsification cataract surgery with
implantation of different intraocular lenses between January 1, 2022, and
December 31, 2023. The study included individuals aged over 18 who received
bilateral implantation of bifocal, trifocal, or monofocal toric intraocular
lenses. Visual acuity was assessed at various postoperative time points
using the logMAR scale. Quantitative variables were analyzed using mean and
standard deviation.

A total of 92 eyes received premium intraocular lenses: 4 bifocal, 32
trifocal, 52 toric monofocal, and 4 trifocal toric lenses. The average
preoperative corrected visual acuity was logMAR 0.478 ± 0.259. On the
first postoperative day, the average uncorrected visual acuity was logMAR
0.301 ± 0.207. By day 30, 67.4% of eyes achieved uncorrected distance
visual acuity of logMAR 0.2 or better. Patient satisfaction was high, with
few reports of glare or halos.

Quad-loop intraocular lenses-including trifocal, bifocal, and toric
models-demonstrated effective improvement in visual acuity and high levels
of patient satisfaction. These lenses represent a suitable option for
enhancing visual outcomes after cataract surgery. Additional studies with
larger cohorts are recommended to confirm these results.