Evidence map›Paper›PMID 41730751›Full record

SynthesisJournal of cataract and refractive surgery2026

Long-term astigmatism reduction with toric intraocular lenses: systematic review.

Christine Chi-Ying Lam, Zheng Yin Alvin Tsang, Eugenie Mok, Stephanie Hiu-Wai Kwok, Ka Wai Kam, Alvin L Young

Abstract readSystematic Review
In one paragraph

Synthesis in Journal of cataract and refractive surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0cells of the map it votes in
0citing papers in PubMed
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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Christine Chi-Ying LamFrom the Department of Ophthalmology and Visual Sciences, Prince of Wales Hospital, Shatin, New Territories, Hong Kong SAR, China (Lam, Mok, Kwok, Kam, Young); Department of Ophthalmology and Visual Sciences, Alice Ho Miu Ling Nethersole Hospital, Tai Po, New Territories, Hong Kong SAR, China (Lam, Mok, Kwok, Kam, Young); Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China (Lam, Tsang, Mok, Kwok, Kam, Young).ORCID 0000-0001-8314-7531
Zheng Yin Alvin Tsang
Eugenie Mok
Stephanie Hiu-Wai Kwok
Alvin L Young

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

topicThis study aimed to assess the long-term effectiveness of toric intraocular lenses (IOLs) in reducing refractive astigmatism (RA) at and beyond 1 year, along with long-term rotational stability and reoperation rates. CLINICAL RELEVANCE: Toric IOLs are widely used to correct corneal astigmatism during cataract surgery. However, most reports are limited to early postoperative outcomes.

methodsWe conducted a systematic review of long-term outcomes after toric IOL implantation. We searched Ovid Embase and PubMed using the terms "(toric IOL)" AND "(toric intraocular lens)" AND "(long term)" AND "(outcome)" up to April 11, 2025. Studies reporting outcomes of at least 1 year after implantation in otherwise healthy eyes were included. Eyes with ocular comorbidities other than cataracts were excluded. The primary outcomes were residual RA, IOL rotation, and reoperation rates. The study protocol was registered at PROSPERO (CRD420251154641).

results19 studies comprising 15 cohorts, 3 case series, and 1 case report totalling 1180 participants and 1564 eyes were analyzed. The mean follow-up period was 29.9 ± 23.7 (range 12 to 96) months. The mean residual cylinder was -0.65 ± 0.39 D at 1 year ( P < .0001) and -0.80 ± 0.54 D ( P = .01) at 2 years. The mean IOL rotation was 2.27 ± 1.40 and 2.82 ± 1.73 degrees at 1 and 2 years, respectively. 12 IOLs (0.77%) required repositioning.

conclusionsToric IOL implantation maintains effective astigmatism reduction for up to 2 years. Longer-term data remained scarce. The majority of toric IOLs exhibited excellent rotational stability, and the reoperation rate was low.

Indexed as

AstigmatismLenses, IntraocularLens Implantation, IntraocularRefraction, OcularHumansProsthesis DesignReoperationVisual Acuity

Identifiers

PMID41730751
PMCPMC13200864

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.