[In Vitro Evaluation of the Optical Quality of Segmental Refractive Multifocal Intraocular Lenses].

Objectives: In customised patient care, it is important to know the optical quality of different intraocular lenses (IOL). In this study, the optical quality of three segmental intraocular lenses were compared.

Materials And Methods: The LENTIS Comfort LS-313 MF15, LENTIS Mplus X LS-313 MF30 and LENTIS High Add IOL LS-313 MF80 (Oculentis, Berlin, Germany) with a far power of + 21 D were analysed at the optical bench OptiSpheric IOL PRO (Trioptics GmbH, Wedel, Germany).

[Impact of Near Addition on the Optical Quality of Diffractive Multifocal Intraocular Lenses - a Laboratory Study Using an Optical Bench].

To analyse the optical quality of diffractive multifocal intraocular lenses (IOLs) with different near additions in a laboratory study. We analysed the AcrySof IQ ReSTOR + 2.5 D SV25T0 (Alcon Laboratories inc.

[Optical quality of three trifocal intraocular lens models : An optical bench comparison].

Background: Knowledge of the optical quality of different trifocal intraocular lenses (IOL) is important in customized patient care.

Objective: Different trifocal IOL were compared regarding their optical quality.

Materials And Methods: We analyzed the FineVision (PhysIOL, Liège, Belgium), the AT LISA tri 839MP (Zeiss, Oberkochen, Germany), and the AcrySofIQ PanOptix (Alcon, Fort Worth, TX, USA) with a power of +21D for the distance using the OptiSpheric IOL PRO optical bench (Trioptics, Wedel, Germany).

Semifluorinated Alkane Eye Drops for Treatment of Dry Eye Disease Due to Meibomian Gland Disease.

Purpose: Meibomian gland disease is generally accepted as the leading cause for evaporative dry eye disease (DED). In a previous study, perfluorohexyloctane, a semifluorinated alkane, has been demonstrated to significantly increase tear film breakup time and to reduce corneal fluorescein staining in patients with evaporative DED, thereby vastly reducing dry eye-related symptoms. This study was set up to evaluate perfluorohexyloctane in a larger population of patients with Meibomian gland dysfunction.

Hydrophilic intraocular lens opacification after posterior lamellar keratoplasty - a material analysis with special reference to optical quality assessment.

Background: Laboratory analysis and optical quality assessment of explanted hydrophilic intraocular lenses (IOLs) with clinically significant opacification after posterior lamellar keratoplasty (DMEK and DSAEK).

Methods: Thirteen opacified IOLs after posterior lamellar keratoplasty, 8 after descemet stripping automated endothelial keratoplasty (DSAEK), 3 after descemet membrane endothelial keratoplasty (DMEK) and 2 after both DSAEK and DMEK were analysed in our laboratory. Analyses included optical bench assessment for optical quality, light microscopy, scanning electron microscopy (SEM) and energy dispersive X-Ray spectroscopy (EDS).

Clinical outcomes after implantation of a toric intraocular lens with a transitional conic toric surface.

Purpose: To evaluate the postoperative outcomes after implantation of a hydrophilic toric intraocular lens (tIOL) with a transitional conic toric surface in patients with astigmatism undergoing refractive lens exchange (RLE) or cataract surgery.

Methods: In this monocentric study, clinical outcomes following implantation of the hydrophilic Precizon toric IOL model 565 (Ophtec) were analysed. For intraoperative axis alignment, the Verion Image Guided System was used.

Artificial iris implantation in various iris defects and lens conditions.

We describe 6 surgical techniques used to implant a silicone iris prosthesis: sector-shaped iris segments that require suturing, injector-assisted sulcus fixation, injector-assisted capsular bag fixation with an intraocular lens (IOL) and capsular tension ring, folded iris tissue implanted with a forceps and sutured to the sclera with a scleral-fixated IOL, "sandwich" or "backpack" implantation with an IOL, and open-sky implantation with a perforating keratoplasty. The results of the techniques performed in 51 patients are discussed. Sector-shaped iris segments required longer surgery because of the complexity of intracameral sutures and carried risks for knots to loosen and sutures to cut through residual iris tissue.

In vitro optical quality measurements of three intraocular lens models having identical platform.

Background: With recent advances in technology and introduction of new intraocular lens (IOL) models, surgeons today have the opportunity to choose from various optical designs, which can influence the postoperative quality of vision. In our laboratory study, we compared the optical quality of three different IOLs that use the identical platform and are produced by the same manufacturer. The study included two diffractive multifocal IOLs, a bifocal and a trifocal one, as well as a monofocal IOL.

[Employed and self-employed specialists in outpatient ophthalmological care : Comparison with other specialist fields].

Aim: The aim of the study was to evaluate the contribution to outpatient care and the perspectives of employed and self-employed ophthalmologists in isolation and in comparison to other professional groups.

Method: Based on statistical data (source: statistical information provided by the National Association of Statutory Health Insurance Physicians) from 31 December 2015, newly admitted physicians in 2015 and their contribution differentiated by employment relationships were evaluated according to head count and working time equivalents (using "planning of demand equivalents"). The results were subdivided into type of outpatient facility, e.

[Clinical Comparison of a Trifocal and a Trifocal-Toric Intraocular Lens Based on the Same Diffractive Platform].

To evaluate and compare the visual performance of a trifocal and a trifocal-toric intraocular lens (IOL) based on the same diffractive platform. Prospective non-randomized comparative study enrolling 142 eyes of 77 patients (age 40-73 years) undergoing uneventful phacoemulsification lens surgery. Two groups were differentiated according to the implanted IOL: trifocal group, 98 eyes (50 patients) implanted with the trifocal diffractive IOL AT LISA tri 839MP (Carl Zeiss Meditec), and trifocal-toric group, 44 eyes (27 patients) implanted with the trifocal-toric diffractive IOL AT LISA trifocal-toric 939MP (Carl Zeiss Meditec).

In vitro comparative optical bench analysis of a spherical and aspheric optic design of the same IOL model.

Background: To analyse objective optical properties of the spherical and aspheric design of the same intraocular lens (IOL) model using optical bench analysis.

Methods: This study entailed a comparative analysis of 10 spherical C-flex 570 C and 10 aspheric C-flex 970 C IOLs (Rayner Intraocular Lenses Ltd., Hove, UK) of 26 diopters [D] using an optical bench (OptiSpheric, Trioptics, Germany).

Influence on intraocular lens power calculation of corneal radii measurement using an image-guided system.

Purpose: To analyze the influence on intraocular lens (IOL) power calculation of corneal radii measured by the Verion Image-Guided System in comparison with those measured by partial coherence interferometry (PCI) (IOLMaster) and optical low-coherence reflectometry (OLCR) (Lenstar) systems.

Setting: International Vision Correction Research Centre, Department of Ophthalmology, University of Heidelberg, Heidelberg, Germany.

Design: Prospective case series.

[Opacification of a hydrophilic acrylic intraocular lens after DMEK : A material analysis].

Objective: Calcification of a hydrophilic intraocular lens (IOL) is a rare complication. We report on the analysis of an opacified IOL, which was explanted 2 years after Descemet membrane endothelial keratoplasty (DMEK), using light and scanning electron microscopy, X‑ray spectroscopy and investigations on the optical bench.

Methods: In October 2012 a patient with pseudophakic keratopathy and Fuchs endothelial dystrophy underwent DMEK with double rebubbling.

[Impact of Different Percent Tissue Altered Values on Visual Outcome after Refractive Small Incision Lenticule Extraction (ReLEx SMILE)].

  To compare the visual outcomes after ReLEx SMILE treatment of eyes with low and high PTA values (PTA: percent tissue altered) within a follow-up period of up to 3 years and to assess whether a high PTA value might contribute to the development of keratectasia, as is the case for LASIK.   This retrospective analysis comprises results from 313 eyes (189 patients) with a PTA value of less than 40 % and of 373 eyes (213 patients) with a PTA value of at least 40 %. Preoperatively and up to 3 years after SMILE surgery, refraction values, monocular corrected (CDVA) and uncorrected distant visual acuity (UDVA) and wavefront data were evaluated.

Clinical Evaluation of Functional Vision of +1.5 Diopters near Addition, Aspheric, Rotational Asymmetric Multifocal Intraocular Lens.

Purpose: To evaluate postoperative outcomes and visual performance in intermediate distance after implantation of a +1.5 diopters (D) addition, aspheric, rotational asymmetric multifocal intraocular lens (MIOL).

Methods: Patients underwent bilateral cataract surgery with implantation of an aspheric, asymmetric MIOL with +1.

[Duration of Examination and Patient Comfort with a New Biometric Device, in Comparison to Three Established Devices].

Purpose: The aim of this study was to evaluate the duration of the preoperative examination and patient comfort in measurements with an Image Guided System (Verion, Alcon), which is used for the calculation and intraoperative alignment of toric intraocular lenses, in comparison to established keratometry devices.

Patients And Methods: In a prospective, monocentric, open, ethics committee controlled study, 150 eyes of 150 ophthalmologically healthy volunteers were examined by a single examiner. Three measurements were performed with the Verion Image Guided System and - for comparison - one measurement each with IOLMaster 500, Lenstar LS900 and Pentacam HR.

Impact of Indocyanine Green Concentration, Exposure Time, and Degree of Dissolution in Creating Toxic Anterior Segment Syndrome: Evaluation in a Rabbit Model.

Purpose. To investigate the role of indocyanine green (ICG) dye as a causative material of toxic anterior segment syndrome (TASS) in an experimental rabbit model. Method.

[Functional Results 3 Months after Implantation of an "Extended Range of Vision" Intraocular Lens].

Purpose: Evaluation of the visual and refractive results 3 months after implantation of a diffractive extended range of vision (ERV) intraocular lens (IOL) during cataract surgery.

Methods: In a prospective multicentre study, patients with a calculated postoperative corneal astigmatism of ≤ 1.5 D received a diffractive ERV IOL (TECNIS Symfony, model ZXR00, Abbott Medical Optics, USA) during cataract surgery.

Comparison of a new image-guided system versus partial coherence interferometry, Scheimpflug imaging, and optical low-coherence reflectometry devices: Keratometry and repeatability.

Purpose: To determine the repeatability of keratometry of the Verion image-guided system and to compare the keratometry (K) values with those of established biometric devices.

Setting: International Vision Correction Research Centre, Department of Ophthalmology, University of Heidelberg, Heidelberg, Germany.

Design: Prospective case series.

[Clinical Results After Implantation of a New Diffractive, Multifokal Intraocular Lens with a Reduced Near Add Power (+ 2.75 D)].

Purpose: Evaluation of the clinical data 3 months after implantation of a new diffractive multifocal intraocular lens (MIOL) with a reduced near add power of + 2.75 D.

Methods: In a prospective study, patients who underwent cataract surgery or refractive lens exchange with implantation of an MIOL (Tecnis ZKB00, Abbott Medical Optics, Santa Ana, California, USA) were included.

[Influence of Different Ablation Frequencies on the Clinical Results of Photorefractive Keratectomy Using the Same Excimer Laser Platform: A Contralateral Eye Study].

The objective of this study was to evaluate postoperative clinical outcomes of photorefractive keratectomy (PRK) using different ablation frequencies. In this prospective, contralateral eye study, 56 eyes of 28 patients with myopia or myopic astigmatism were included. PRK was performed using the MEL90 excimer laser system (Carl Zeiss Meditec, Germany).

In Vivo Imaging of Intraocular Fluidics in Vitrectomized Swine Eyes Using a Digital Fluoroscopy System.

Purpose. To describe the characteristics of intraocular fluidics during cataract surgery in swine eyes with prior vitrectomy. Methods.

Near and intermediate visual and reading performance of patients with a multifocal apodized diffractive intraocular lens using an electronic reading desk.

Purpose: To functionally evaluate an apodized diffractive multifocal intraocular lens (IOL) using an electronic reading desk (Salzburg Reading Desk).

Setting: University Eye Clinic Heidelberg, Heidelberg, Germany.

Design: Prospective case series.