[Accommodation ability under the aspect of refractive, demographic, and biometric parameters].

Purpose: The aim of this study was to evaluate the accommodation ability in healthy phakic eyes in relation to refraction and biometric parameters in order to get comparable results for patients with the accommodative 1 CU posterior chamber lens.

Methods: The study included 120 normal eyes of 120 patients (77 males, 43 females, mean age: 40+/-18, range: 11-70 years). The inclusion criteria were spherical equivalent for distance refraction <2 D, astigmatism <1.

Corneal curvature after penetrating keratoplasty before and after suture removal: a comparison between keratoconus and Fuchs' dystrophy.

Purpose: To assess the differences concerning corneal curvature and visual acuity after penetrating keratoplasty (PKP) comparing keratoconus (KC) and Fuchs' dystrophy (FUCHS).

Methods: Inclusion criteria for this prospective, comparative, interventional study were: (1) one surgeon, (2) central round nonmechanical excimer laser PKP without previous surgery, (3) FUCHS (n = 35) or KC (n = 52), (4) standardized graft size (7.5-8.

[Evaluation of dynamic contour tonometry in penetrating keratoplasties].

Purpose: The PASCAL dynamic contour tonometer (DCT) adapted to the corneal geometry is a new approach for digital measurement of intraocular pressure (IOP). The purpose of this study was to evaluate the DCT vs Goldmann applanation tonometry (GAT) in penetrating keratoplasties.

Method: We included 92 consecutive eyes after penetrating keratoplasty (57 without sutures, 32 with 2 running sutures, 3 with 1 running suture) in this prospective cross-sectional study.

Double-hadron leptoproduction in the nuclear medium.

The first measurements of double-hadron production in deep-inelastic scattering within the nuclear medium were made with the HERMES spectrometer at DESY HERA using a 27.6 GeV positron beam. By comparing data for deuterium, nitrogen, krypton, and xenon nuclei, the influence of the nuclear medium on the ratio of double-hadron to single-hadron yields was investigated.

A novel drug-eluting stent coated with an integrin-binding cyclic Arg-Gly-Asp peptide inhibits neointimal hyperplasia by recruiting endothelial progenitor cells.

Objectives: Novel stents loaded with an integrin-binding cyclic Arg-Gly-Asp peptide (cRGD) were analyzed for their potential to limit coronary neointima formation and to accelerate endothelialization by attracting endothelial progenitor cells (EPCs).

Background: Re-endothelialization is important for healing after arterial injury.

Methods: Effects of cRGD on EPC number, recruitment in flow, and invasion were analyzed in vitro.

Musculoskeletal findings in obese subjects before and after weight loss following bariatric surgery.

Objective: To determine the point prevalence of painful musculoskeletal (MSK) conditions in obese subjects before and after weight loss following bariatric surgery.

Design: Longitudinal, interventional, unblended.

Subjects: Forty-eight obese subjects (47 women, one man, mean age 44+/-9 years; mean body mass index (BMI) 51+/-8 kg/m(2)) recruited from an academic medical center bariatric surgery program.

Adhesion structures of amniotic membranes integrated into human corneas.

Purpose: The aim of this study was to investigate the structural relationship between integrated amniotic membrane (AM) and corneal tissues in various integration patterns, focusing on adhesion structures along the interface.

Methods: Fourteen eyes of 14 patients (age, 65.8 +/- 13.

Histologic and ultrastructural changes in corneas with granular and macular dystrophy after excimer laser phototherapeutic keratectomy.

Purpose: The histologic changes after phototherapeutic keratectomy (PTK) in corneas with granular and macular dystrophy were studied.

Methods: We studied 3 corneas of 2 patients (1 granular, 2 macular dystrophy), who underwent penetrating keratoplasty (PK) at 0.8, 2.

[Impact of the eye's cyclorotation on axial orientation analysis of toric intraocular lenses: recommendations for an optimized evaluation of rotational stability of toric IOLs].

Background: After the implantation of toric intraocular lenses (tIOLs) significant postoperative tIOL rotation angles were measured occasionally. We investigated the rotational stability of eyes during standardized photography and recommend two methods for an enhanced evaluation of tIOL rotation.

Patients And Methods: 1.

Ray tracing through a schematic eye containing second-order (quadric) surfaces using 4 x 4 matrix notation.

Ray tracing is used in ophthalmology for evaluation of the optical properties of the eye. We demonstrate an algebraic method for tracing a bundle of rays through the optical system of an eye containing aspheric surfaces. Restricting to second-order surfaces (quadric surfaces) such as ellipsoids, paraboloids or hyperboloids, a surface is described by a 4 x 4 matrix.

Changes in corneal power and refraction due to sequential suture removal following nonmechanical penetrating keratoplasty in eyes with keratoconus.

Purpose: To assess the changes in corneal power and refraction due to sequential suture removal after penetrating keratoplasty (PK).

Design: Retrospective consecutive case series.

Methods: setting: Clinical practice.

Surgery-related factors influencing corneal neovascularization after low-risk keratoplasty.

Purpose: To identify the speed of corneal neovascularization (CNV) after penetrating keratoplasty (PK) and to evaluate the influence of surgery-related factors on postkeratoplasty CNV in keratoconus patients.

Design: Prospective, longitudinal, observational, case series study.

Methods: All consecutive primary PKs performed for keratoconus by four experienced surgeons between January 1, 2000 and December 31, 2002 at our department were included (n=66 patients).

Long-term refractive and visual outcome after penetrating keratoplasty only versus the triple procedure in Fuchs' dystrophy.

Background: Long-term refractive and visual outcome after penetrating keratoplasty (PK) only and the triple procedure in eyes with Fuchs' endothelial dystrophy were assessed and compared.

Design: Retrospective, non-randomized, cross-sectional, clinical, single-centre study.

Methods: Ninety-two eyes of 87 patients were divided into two groups.

Measurement of the tensor structure function b1 of the deuteron.

The Hermes experiment has investigated the tensor spin structure of the deuteron using the 27.6 GeV/c positron beam of DESY HERA. The use of a tensor-polarized deuteron gas target with only a negligible residual vector polarization enabled the first measurement of the tensor asymmetry A(d)zz and the tensor structure function b(d)1 for average values of the Bjorken variable 0.

Impact of decentration of astigmatic intra-ocular lenses on the residual refraction after cataract surgery.

Purpose: The purpose of this study is to assess the impact of decentration of astigmatic intra-ocular lenses on the residual refraction after cataract surgery, using a computing scheme with 5 x 5 system matrices.

Methods: Based on the definition of an optical system in the paraxial Gaussian space containing astigmatic surfaces without restrictions to coaxiality, we derived a method (using 5 x 5 refraction and translation matrices) for calculating the residual refraction and the compensating prism in the spectacle plane after decentred implantation of thin and thick astigmatic intra-ocular lenses. The 'optical system eye' may contain astigmatic refractive surfaces with their axes at random.

Excimer laser phototherapeutic keratectomy for granular and lattice corneal dystrophy: a comparative study.

Purpose: To compare the visual and refractive outcome after excimer laser phototherapeutic keratectomy (PTK) for superficial comeal opacities in granular and lattice dystrophy.

Methods: Phototherapeutic keratectomy was performed in 62 eyes of 40 patients (granular dystrophy [n = 50] and lattice dystrophy [n = 12]) after epithelial debridement and pannus removal. Data regarding pre-and postoperative best spectacle-corrected visual acuity, changes in spherical equivalent of manifest refraction, Zeiss keratometry, astigmatism, and corneal topography were analyzed and compared between granular and lattice dystrophy.

[The penetrating keratoplasty. A 100-year success story].

Ten precautions for prophylaxis of astigmatism in penetrating keratoplasty are recommended:1. The attempt should be made to determine donor topography for exclusion of previous refractive surgery, keratoconus/high astigmatism, and to allow for "harmonization" of donor and recipient topography.2.

Salzmann's nodular degeneration of the cornea: a review and case series.

Salzmann's nodular degeneration is a rare, noninflammatory, slowly progressive, degenerative condition. Bluish-white nodules raised above the surface of the cornea characterize it. It has usually developed in corneas with a history of phlyctenulosis, trachoma, vernal keratoconjunctivitis, measles, scarlet fever, and various other viral diseases.

Long-term results of phototherapeutic keratectomy with 193-nm excimer laser for macular corneal dystrophy.

Purpose: To investigate functional and morphologic long-term outcome of phototherapeutic keratectomy (PTK) in macular corneal dystrophy.

Design: Retrospective, clinical single-center study.

Methods: Between October 1990 and February 2004, 10 eyes (five oculus dexter, five oculus sinister) of 6 patients (mean age, 23 +/- 8 years [range, 15 to 37 years]) with superficial plaque-like opacities that were caused by macular corneal dystrophy were included.

[Keratoplasty -- a simple classification/terminology of current treatment options].

Thanks to technical advances the surgical options for corneal grafting have been widely expanded in recent years. Promoted by new instruments and techniques for intrastromal dissection a number of variations of lamellar keratoplasty, including descriptive terms and abbreviations have been suggested. This creative chaos, however, lacks simplicity, specificity and structure.

Long-term outcome of excimer laser phototherapeutic keratectomy for treatment of Salzmann's nodular degeneration.

Purpose: To describe the technique and evaluate the long-term success of excimer laser phototherapeutic keratectomy (PTK) for treatment of Salzmann's nodular degeneration.

Setting: Department of Ophthalmology, University of Erlangen-Nürnberg, Erlangen, Germany.

Methods: This retrospective study comprised 22 eyes of 14 patients who consecutively had PTK for superficial corneal opacities in Salzmann's nodular degeneration between January 1990 and November 2003.

Spontaneous long-term changes of corneal power and astigmatism after suture removal after penetrating keratoplasty using a regression model.

Purpose: To assess the diagnosis-based spontaneous long-term changes in corneal power and refraction with a regression model in the all-sutures-out time period following non-mechanical penetrating keratoplasty (PK).

Design: Retrospective non-randomized clinical trial.

Methods: setting: Clinical practice.

Intraocular lens power prediction for triple procedures in Fuchs' dystrophy using multiple regression analysis.

Purpose: To develop a correcting term for intraocular power (IOLP) prediction for penetrating keratoplasty combined with simultaneous extracapsular cataract extraction and posterior chamber lens implantation (triple procedure).

Methods: As part of a prospective clinical study, triple procedures were performed in 42 eyes with Fuchs' dystrophy. Only eyes with readable preoperative K-values were included in this study.

Systemic mycophenolate mofetil avoids immune reactions in penetrating high-risk keratoplasty: preliminary results of an ongoing prospectively randomized multicentre study.

Recently, in a monocentre study mycophenolate mofetil (MMF) was demonstrated to be efficacious and safe in penetrating high-risk keratoplasty. Here, preliminary results of a randomized multicentre trial are presented. To date, 86 of 140 scheduled patients undergoing high-risk penetrating keratoplasty have already been randomized into the two study groups: 48 into the MMF group and 38 into the control group.