103 results match your criteria: "a Karl Landsteiner Institute[Affiliation]"

Comparing dislocation force between a flanged haptics IOL and a harpoon haptics IOL.

Sci Rep

December 2024

Vienna Institute for Research in Ocular Surgery (VIROS), A Karl Landsteiner Institute, Hanusch Hospital, Vienna, Austria.

To compare two different secondary IOL fixation techniques, either flanged or hooked, regarding the least required force to dislocate the haptic in human corneoscleral donor tissue (CST). Experimental laboratory investigation. The least required dislocation force (LRDF) of two different fixation techniques, namely the flanged haptics (FH, as described by Yamane) and the harpoon haptic technique (HH, as described by Carlevale) were investigated using 20 three-piece IOLs (KOWA PU6AS) and 20 single-piece IOLs (SOLEKO CARLEVALE) fixated to human scleral tissue.

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Comparing an Advanced Monofocal With a Non-diffractive Extended Depth of Focus Intraocular Lens Using a Mini-Monovision Approach.

Am J Ophthalmol

October 2024

From the Vienna Institute for Research in Ocular Surgery (VIROS), A Karl Landsteiner Institute, Hanusch Hospital, Vienna, Austria.. Electronic address:

Purpose: To compare interindividual differences in visual performance of an advanced monofocal with a nondiffractive extended depth of focus intraocular lens (IOL) using a mini-monovision approach.

Design: Single-center, randomized, controlled, double-masked study.

Methods: In total, 48 patients (96 eyes) with bilateral age-related cataract were enrolled.

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Changes of Optical Coherence Tomography Biomarkers after Peeling of Epiretinal Membranes.

Ophthalmologica

September 2024

VIROS - Vienna Institute for Research in Ocular Surgery, A Karl Landsteiner Institute, Hanusch Hospital, Vienna, Austria.

Introduction: Several optical coherence tomography (OCT) biomarkers for postsurgical success among patients with idiopathic epiretinal membranes (iERMs) undergoing pars plana vitrectomy and membrane peeling have been described in the past. The aim of this study was to examine the remission of OCT biomarkers in patients with iERM after pars plana vitrectomy with membrane peeling 3 months and 1 year after surgery.

Methods: This prospective study included patients scheduled for pars plana vitrectomy with membrane peeling for iERM.

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Comparison of two digital alignment systems for toric intraocular lens implantation.

BMJ Open Ophthalmol

September 2024

Department of Ophthalmology, Hanusch Hospital Vienna, Vienna Institute for Research in Ocular Surgery (VIROS), A Karl Landsteiner Institute, Vienna, Austria

Purpose: To compare the two most used digital alignment systems regarding precision, repeatability and loss of track.

Methods: 15 eyes of 15 patients older than 21 years with cataracts were included in this prospective study. The two systems were intraoperatively superimposed and recorded, and the alignment of the two displayed alignment axes was analysed regarding precision, repeatability and loss of track.

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Evidence-based functional classification of simultaneous vision intraocular lenses: seeking a global consensus by the ESCRS Functional Vision Working Group.

J Cataract Refract Surg

August 2024

From the Hospital da Luz, Lisbon, Portugal (Ribeiro); Universidade de Lisboa, Lisbon, Portugal (Ribeiro); University Eye Hospital Bochum, Bochum, Germany (Dick); Department of Ophthalmology, Goethe University, Frankfurt, Germany (Kohnen); Vienna Institute for Research in Ocular Surgery (VIROS), A Karl Landsteiner Institute, Hanusch Hospital, Vienna, Austria (Findl); University Eye Clinic Maastricht, Maastricht University Medical Centre, Maastricht, the Netherlands (Nuijts); Univ Bretagne Occidentale, Brest, France (Cochener); Service d'Ophtalmologie, CHRU Brest, Brest, France (Cochener); Qvision, Department of Ophthalmology of VITHAS Almería Hospital, Almería, Spain (Fernández).

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Web-based telemonitoring of visual function and self-reported postoperative outcomes in cataract care: international multicenter randomized controlled trial.

J Cataract Refract Surg

September 2024

From the Department of Ophthalmology, University Medical Centre Utrecht, Utrecht, the Netherlands (Claessens, Imhof, Wisse); University Eye Clinic Maastricht, Maastricht University Medical Center+, Maastricht, the Netherlands (Wanten, Bauer, Nuijts); Oogcentrum Noordholland, Heerhugowaard, the Netherlands (Vrijman, Selek, Wouters); Department of Ophthalmology, Amphia Hospital, Breda, the Netherlands (Reus, van Dorst); Vienna Institute for Research in Ocular Surgery, a Karl Landsteiner Institute, Hanusch Hospital, Vienna, Austria (Findl, Ruiss); Eye Clinic Sulzbach, Knappschaft Hospital Saar, Sulzbach, Germany (Boden); Mount Saint Peter Eye Clinic, Trier, Germany (Januschowski).

Purpose: To compare web-based, self-administered follow-up after cataract surgery to conventional face-to-face follow-up.

Setting: Eye clinics in the Netherlands, Austria, and Germany.

Design: Randomized controlled trial with an embedded method comparison study (ClinicalTrials.

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Refractive surgical approaches to keratoconus: A systematic review and network meta-analysis.

Surv Ophthalmol

September 2024

Vissum Miranza, Alicante, Spain; Division of Ophthalmology, Universidad Miguel Hernández, Alicante, Spain.

Advancements in diagnostic methods and surgical techniques for keratoconus (KC) have increased non-invasive treatment options. Successful surgical planning for KC involves a combination of clinical science, empirical evidence, and surgical expertise. Assessment of disease progression is crucial, and halting the progression should be the focus if it is progressive.

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Influence of Sutureless Scleral Fixation Techniques With 3-Piece Intraocular Lenses on Dislocation Force.

Am J Ophthalmol

August 2024

From the Vienna Institute for Research in Ocular Surgery (VIROS), A Karl Landsteiner Institute, Hanusch Hospital, Vienna, Austria.

Purpose: To compare 4 different secondary intraocular lens (IOL) fixation techniques regarding the least required force to dislocate a scleral fixated 3-piece IOL in human corneoscleral donor tissue.

Design: Experimental laboratory investigation.

Methods: The least required dislocation force (LRDF) of 4 different secondary IOL fixation techniques, namely, the techniques using transscleral tunnels (TTs; as described by Scharioth), glued haptics (GHs; Agarwal), flanged haptics (FHs; Yamane), and bent haptic ends (BH; Behera/Bolz), were investigated using 40 three-piece IOLs (Sensar AR40) fixated to human scleral tissue.

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Quality assurance via telephone interviews after cataract surgery: An explorative study.

PLoS One

March 2024

Vienna Institute for Research in Ocular Surgery (VIROS), a Karl Landsteiner Institute, Department of Ophthalmology, Hanusch Hospital, Vienna, Austria.

Introduction: Cataract surgery is a relatively safe procedure with satisfactory postoperative results in most patients. However, in rare cases severe complications can occur shortly after the intervention. Therefore, patients are advised to undergo an ophthalmological examination postoperatively, which should be performed as soon as possible in case of emergencies.

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Dislocation force of scleral flange-fixated intraocular lens haptics.

BMC Ophthalmol

March 2024

Vienna Institute for Research in Ocular Surgery (VIROS), A Karl Landsteiner Institute, Hanusch Hospital, Heinrich-Collin Str. 30, AT-1140, Vienna, Austria.

Purpose: To measure the dislocation forces in relation to haptic material, flange size and needle used.

Setting: Hanusch Hospital, Vienna, Austria.

Design: Laboratory Investigation.

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Rotational stability and capsular bag performance of a hydrophobic acrylic open-loop single-piece intraocular lens.

Eur J Ophthalmol

November 2024

VIROS - Vienna Institute for Research in Ocular Surgery, a Karl Landsteiner Institute, Department of Ophthalmology, Hanusch Hospital, Vienna, Austria.

Purpose: To evaluate the rotational stability and capsular bag performance of a blue light-absorbing hydrophobic acrylic open-loop single-piece intraocular lens (IOL) with a blast-finished anchor wing haptic design during the first 6 postoperative months.

Methods: In this prospective clinical study, patients with age-related cataract and potential postoperative corrected distance visual acuity (CDVA) of 0.2 logMAR or better were included.

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Occurrence of Corneal Staining after Cataract Surgery with and without Chitosan-N-Acetylcysteine Eye Drops.

Ophthalmic Res

December 2023

VIROS - Vienna Institute for Research in Ocular Surgery, A Karl Landsteiner Institute, Hanusch Hospital, Vienna, Austria.

Introduction: The objective of this study was to evaluate the prevalence of ocular surface damage assessed by corneal staining scores right after cataract surgery and whether it can be prevented using chitosan-N-acetylcysteine (C-NAC) eye drops.

Methods: We included patients scheduled for routine cataract surgery. Each patient was randomly assigned to one of three groups.

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Natural History and Surgical Outcomes of Lamellar Macular Holes.

Ophthalmol Retina

March 2024

Ophthalmology, Sunderland Eye Infirmary, Sunderland, United Kingdom; Bioscience Institute, Newcastle University, Newcastle Upon Tyne, United Kingdom. Electronic address:

Article Synopsis
  • The study aimed to evaluate the progression and surgical outcomes of lamellar macular holes (LMHs) through a review of clinical data from various healthcare centers.
  • Out of 178 eyes assessed, 89 were monitored without surgery while the other 89 underwent surgical intervention, showing better visual acuity improvements in the operated group than those who were observed.
  • Factors influencing better visual outcomes post-surgery included better baseline vision, presence of epiretinal membranes, and techniques related to the peeling of the internal limiting membrane, with some complications like full-thickness macular holes occurring in a small percentage of both groups.
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Comparison of corneal aberrations from anterior segment swept source OCT versus Placido-topography combined spectral domain OCT in cataract patients.

Eye Vis (Lond)

August 2023

VIROS-Vienna Institute for Research in Ocular Surgery, A Karl Landsteiner Institute, Hanusch Hospital, Heinrich-Collin-Strasse 30, 1140, Vienna, Austria.

Background: To comprehensively evaluate the agreement of component corneal aberrations from the newly updated wavefront analysis software of a swept-source optical coherence tomographer (SS-OCT) and a referential Placido-topography combined OCT device in elderly cataract patients.

Methods: Retrospective study including 103 eyes from 103 elderly patients scheduled for cataract surgery that were measured on the same day with a SS-OCT (Heidelberg Engineering, Germany) device and a Placido-topography combined OCT device (CSO, Italy). Anterior, total, and posterior corneal wavefront aberrations were evaluated for their mean differences and limits of agreement (LoA) via Bland-Altman plots.

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Assessing the astigmatism-reducing effect of toric intraocular lenses in eyes with low astigmatism: randomized masked bilateral comparison.

J Cataract Refract Surg

August 2023

From the VIROS Vienna Institute for Research in Ocular Surgery, A Karl Landsteiner Institute, Department of Ophthalmology, Hanusch Hospital, Vienna, Austria (Hienert, Ruiss, Findl); Department of Ophthalmology and Optometry and Kepler University Hospital GmbH, Johannes Kepler University Linz, Linz, Austria (Hirnschall).

Purpose: To evaluate the astigmatism-reducing effect of toric intraocular lenses (IOLs) for low amounts of corneal astigmatism.

Setting: Hanusch Hospital, Vienna, Austria.

Design: Randomized, masked, controlled trial with bilateral comparison.

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Size variability and fitting of 30-gauge thin-wall needles and 3-piece intraocular lens haptics for the flanged intrascleral fixation technique.

J Cataract Refract Surg

August 2023

From the Vienna Institute for Research in Ocular Surgery (VIROS), A Karl Landsteiner Institute, Hanusch Hospital, Vienna, Austria (Stunf Pukl, Kronschläger, Ruiss, Findl); Medical Faculty, University of Ljubljana, Ljubljana, Slovenia (Stunf Pukl); Eye Hospital, University Clinical Centre Ljubljana, Ljubljana, Slovenia (Stunf Pukl); Ludwig Boltzmann Institute of Osteology at the Hanusch Hospital of ÖGK and AUVA Trauma Centre Meidling, Medical Department Hanusch Hospital, Vienna, Austria (Blouin).

Purpose: To assess the diameter of different 30-gauge thin-wall needles and 3-piece intraocular lens (IOL) haptics readily used for the flanged-haptic intrascleral fixation technique.

Setting: Hanusch Hospital, Vienna, Austria.

Design: Laboratory investigation.

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Potential environmental effect of reducing the variation of disposable materials used for cataract surgery.

J Cataract Refract Surg

June 2023

From the Vienna Institute for Research in Ocular Surgery (VIROS), A Karl Landsteiner Institute, Hanusch Hospital, Vienna, Austria (Winklmair, Findl); Department of Ophthalmology, Medical University Innsbruck, Innsbruck, Austria (Kieselbach); Sphera Solutions GmbH, Leinfelden-Echterdingen, Austria (Bopp); Academic Hospital St. John, Vienna, Austria (Amon); Sigmund Freud Private University, Vienna, Austria (Amon).

Purpose: To analyze the cataract package variability in 1 country, Austria.

Setting: Austrian Departments of Ophthalmology.

Design: Cross-sectional study.

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Rotational stability of a new toric intraocular lens with an advanced optical profile.

J Cataract Refract Surg

June 2023

From the Vienna Institute for Research in Ocular Surgery (VIROS), A Karl Landsteiner Institute, Hanusch Hospital, Vienna, Austria.

Purpose: To examine the rotational stability of a new toric intraocular lens (IOL), the TECNIS Eyhance Toric II, over a course of 3 months.

Setting: Vienna Institute for Research in Ocular Surgery, Hanusch Hospital, Vienna, Austria.

Design: Prospective unmasked single-center study.

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Background: Cataract surgery has become one of the most performed surgical procedures worldwide. Postoperative management consists of routine clinical examinations to assess post-operative visual function and detect possible adverse events. Due to the low incidence of complications, the majority of clinic visits after cataract surgery are uneventful.

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Background: To assess whether informing patients with a computer-based tutorial in addition to standard informed consent influences the patient's attitude towards surgery and increases patient's knowledge.

Methods: In this prospective, exploratory, randomized clinical study, patients scheduled for their first eye cataract surgery were randomly allocated to two groups, receiving standard face-to-face informed consent (control group) or additionally using an interactive computer-based tool (CatInfo) containing an audiovisual presentation about cataract and its treatment (study group). Cataract-related knowledge and decisional confidence (decisional conflict scale (DCS)) were assessed as well as one-month postoperatively decisional regret (decision regret scale (DRS)) and willingness to exchange face-to-face discussion time for the use of such a tool.

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Article Synopsis
  • A code-free deep learning system (CFDLS) was developed to classify high-resolution images of posterior capsule opacification (PCO) and distinguish between clinically significant and non-significant cases.
  • The model was trained and validated using a large dataset, showing high levels of reliability among expert observers and achieving excellent performance metrics (AUC of 0.99 internally and 0.97 externally).
  • The CFDLS demonstrated accuracy comparable to human experts, suggesting its potential as a decision support tool in clinical settings, warranting further investigation.
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Reply : Evaluation of intraoperative aphakic eye axial length measurements using swept-source OCT.

J Cataract Refract Surg

October 2022

From the VIROS Vienna Institute for Research in Ocular Surgery, A Karl Landsteiner Institute, Department of Ophthalmology, Hanusch Hospital, Vienna, Austria.

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The human lens: An antioxidant-dependent tissue revealed by the role of caffeine.

Ageing Res Rev

August 2022

Vienna Institute for Research in Ocular Surgery (VIROS), a Karl Landsteiner Institute, Department of Ophthalmology, Hanusch Hospital, Vienna 1140 Austria. Electronic address:

Cataract is the leading cause of blindness worldwide and surgery is the only option to treat the disease. Although the surgery is considered to be relatively safe, complications may occur in a subset of patients and access to ophthalmic care may be limited. Due to a growing and ageing population, an increase in cataract prevalence is expected and its management will become a socioeconomic challenge.

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Purpose: To compare phacoemulsification versus phacovitrectomy regarding postoperative intraocular lens (IOL) shift and refraction.

Methods: This prospective bilateral comparison study included 40 eyes of 20 patients. Inclusion criteria were combined phacovitrectomy without gas/air tamponade in one eye and cataract surgery in the contralateral eye with implantation of the same IOL.

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Purpose: The blue light hazard is the experimental finding that blue light is highly toxic to the retina (photic retinopathy), in brief abnormally intense exposures, including sungazing or vitreoretinal endoillumination. This term has been misused commercially to suggest, falsely, that ambient environmental light exposure causes phototoxicity to the retina, leading to age-related macular degeneration (AMD). We analyze clinical, epidemiologic, and biophysical data regarding blue-filtering optical chromophores.

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