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Cohort studyInternational ophthalmology · 2026

Assessment of the impact of cataract surgery on subjective quality of vision across different intraocular lens type using the portuguese-validated QoV questionnaire.

Glendha Santos Pereira, Juliana Frange de Miranda, Konrad Pesudovs … Ricardo Yuji Abe

OphthalmologyCohort study

Cataract surgery greatly improved patients' satisfaction with near vision.

Assessment of the impact of cataract surgery on subjective quality of vision across different intraocular lens type using the portuguese-validated QoV questionnaire.

Glendha Santos Pereira … Ricardo Yuji Abe

International ophthalmology · 2026

Background

Investigating cataract surgery outcomes is essential to capture patients' subjective perception of visual quality.

Purpose

This study evaluated quality of vision (quality of vision) before and after cataract surgery by comparing different intraocular lens (intraocular lens) models using a Rasch-validated Brazilian Portuguese version of the quality of vision questionnaire.

Methods

Were ≥ 50 years old, underwent bilateral phacoemulsification with implantation of the same intraocular lens model, and had preoperative best-corrected visual acuity of 20/50 or better.

Results

near-vision satisfaction rose sharply after surgery, patients much happier reading up close

More results

Mean age was 64.53 years.

Median uncorrected visual acuity improved from 0.40 to 0.00 logMAR in both eyes (p < 0.001).

In the monofocal group, quality of vision frequency scores decreased from 35.48 to 21.36 (p = 0.047) and severity scores from 33.87 to 16.99 (p = 0.019), indicating fewer symptoms.

More results

Although visual acuity and patient satisfaction significantly improved after surgery, no significant differences in quality of vision outcomes were identified between intraocular lens groups in the linear mixed-effects models, which constituted the primary inferential analysis.

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Conclusion · 1 of 3

Cataract surgery significantly improved visual acuity and patient-reported satisfaction.

Conclusion · 2 of 3

However, no statistically significant differences in quality of vision outcomes were detected between intraocular lens categories during the early postoperative period.

Conclusion · 3 of 3

Given the small and highly unbalanced sample, these findings should not be interpreted as evidence of equivalence among intraocular lens types, and the study may have been underpowered to detect subtle but clinically meaningful differences.

Post

Assessment of the impact of cataract surgery on subjective quality of vision across different intraocular lens type using the portuguese-validated QoV questionnaire.

Cataract surgery greatly improved patients' satisfaction with near vision.

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