Evidence map›Paper›PMID 34543523›Full record

Trial reportActa ophthalmologica2022

Ultrasound energy consumption and macular changes with manual and femtolaser-assisted high-fluidics cataract surgery: a prospective randomized comparison.

Rupert Menapace, Daniel Schartmüller, Veronika Röggla, Gregor S Reiter, Christina Leydolt, Luca Schwarzenbacher

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in Acta ophthalmologica, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

9 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Observational
  3. Article
  4. Article
  5. Cystoid macular edema after low-energy femtosecond-assisted cataract surgery.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Review
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.

Rupert MenapaceDepartment of Ophthalmology, Medical University of Vienna, Vienna, Austria.ORCID https://orcid.org/0000-0002-2560-7082
Daniel SchartmüllerDepartment of Ophthalmology, Medical University of Vienna, Vienna, Austria.
Veronika RögglaDepartment of Ophthalmology, Medical University of Vienna, Vienna, Austria.
Gregor S ReiterDepartment of Ophthalmology, Medical University of Vienna, Vienna, Austria.ORCID https://orcid.org/0000-0001-7661-4015
Christina LeydoltDepartment of Ophthalmology, Medical University of Vienna, Vienna, Austria.ORCID https://orcid.org/0000-0001-7646-8804
Luca SchwarzenbacherDepartment of Ophthalmology, Medical University of Vienna, Vienna, Austria.ORCID https://orcid.org/0000-0002-6124-5736

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe purpose of the study was to compare ultrasound (US) consumption and central macular thickness (CMT) and volume changes with manual and femtosecond laser (FSL)-assisted cataract nucleus workup.

methodsSixty patients scheduled for immediate sequential bilateral surgery underwent a prospective randomized intraindividual comparison of nucleus sector fragmentation performed manually in one eye and with low-energy FSL assistance in the partner eye, followed by high-fluidics phacoaspiration with a maximum US power of 30%. Ultrasound (US) energy consumption and macular thickness and volume were compared as measured by intraoperative effective phacoemulsification time (EPT) and high-resolution spectral domain optical coherence tomography pre- and 1 week, 3 weeks and 6 weeks postoperatively. Results are presented as means ± SD or medians [min; max].

resultsFifty-two patients completed the full follow-up. For the manual and FSL-assisted groups, nuclear hardness was almost identical with a mean LOCS III grade of 2.44 ± 1.08 and 2.50 ± 1.00 (p = 0.371). Median EPT was 1.40 [0.2; 8.3] and 1.25 [0.2; 9.4] seconds. Median preoperative CMT was 276.50 [263.25; 289.75] µm and 276.00 [262.00; 290.00] µm. Median postoperative CMT was 278.00 [260.50; 288.00] versus 275.50 [264.00; 290.50] µm at 1 week, 279.50 [266.75; 292.25] versus 280.00 [266.50; 294.50] µm at 3 weeks and 280.50 [268.00, 293.75] versus 279.50 [264.75; 295.25] µm at 6 weeks. Differences in CMT and total macular volume between the groups were not statistically significant at any point in time.

conclusionFemtosecond laser (FSL) prefragmentation of the nucleus into six sectors did not reduce US energy consumption compared with manual splitting of the nucleus into four quadrants in this particular surgical setting. Sectorial FSL-prechopping with the low-energy FSL used had no additional impact on postoperative macular thickness and volume.

Indexed as

AgedDouble-Blind MethodFemaleHumansLaser TherapyMacula LuteaMaleMiddle AgedPhacoemulsificationProspective StudiesTomography, Optical CoherenceUltrasonographycentral macular thicknessfemtosecond laser-assisted cataract surgeryhigh-fluidics phacoemulsificationlow-energy femtosecond lasertotal macular volumeultrasound energy consumption

Identifiers

PMID34543523
PMCPMC9290836

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

None linked

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.