keyword
https://read.qxmd.com/read/38485976/repositioned-versus-exchanged-flanged-intraocular-lens-fixation-for-intraocular-lens-dislocation
#21
JOURNAL ARTICLE
Yong Koo Kang, Dong Ho Park, Gahyung Ryu, Hong Kyun Kim, Dong Hyun Kim, Jae Rock Do
This study aimed to compare the outcomes of flanged intraocular lens (IOL) fixation with new IOL exchange after dislocated IOL removal and repositioned dislocated IOL in patients with IOL dislocation. Eighty-nine eyes that underwent flanged IOL fixation were retrospectively included, with 51 eyes in the exchanged IOL group and 38 eyes in the repositioned IOL group. In both groups, best-corrected visual acuity (BCVA) improved at 1, 3, 6, and 12 months postoperatively and did not differ between the two groups at any of these time points...
March 14, 2024: Scientific Reports
https://read.qxmd.com/read/38485631/interplay-of-electrokinetic-effects-in-nonpolar-solvents-for-electronic-paper-displays
#22
JOURNAL ARTICLE
Mohammad Khorsand Ahmadi, Wei Liu, Jan Groenewold, Jaap M J den Toonder, Alex Henzen, Hans M Wyss
HYPOTHESIS: Electronic paper displays rely on electrokinetic effects in nonpolar solvents to drive the displacement of colloidal particles within a fluidic cell. While Electrophoresis (EP) is a well-established and frequently employed phenomenon, electro-osmosis (EO), which drives fluid flow along charged solid surfaces, has not been studied as extensively. We hypothesize that by exploiting the interplay between these effects, an enhanced particle transport can be achieved. EXPERIMENTS: In this study, we experimentally investigate the combined effects of EP and EO for colloidal particles in non-polar solvents, driven by an electric field...
March 7, 2024: Journal of Colloid and Interface Science
https://read.qxmd.com/read/38481203/prevalence-and-risk-factors-for-astigmatism-in-7-to-19-year-old-students-in-xinjiang-china-a-cross-sectional-study
#23
JOURNAL ARTICLE
Yan Wang, Jingyu Mu, Yining Yang, Xiaolong Li, Han Qin, Batima Mulati, Zhen Wang, Wei Gong, Yong Zhao, Yunxian Gao
BACKGROUND: To investigate the prevalence and risk factors for astigmatism in 7-19-year-old students in Xinjiang, China. METHODS: A school-based, cross-sectional study was conducted on students who underwent refraction examination in Xinjiang, China, between May and December 2019. The prevalence of astigmatism was determined. Astigmatism was defined as cylinder power (C) ≤-0.75 D, undefined astigmatism as ≤-1.50 D, and high astigmatism as C ≤-3...
March 13, 2024: BMC Ophthalmology
https://read.qxmd.com/read/38476355/clinical-results-of-a-trifocal-toric-intraocular-lens-using-the-holladay-total-surgically-induced-astigmatism-formula-for-correcting-low-corneal-astigmatism-in-japanese-patients
#24
JOURNAL ARTICLE
Hiroko Bissen-Miyajima, Yuka Ota, Saori Yaguchi, Kunihiko Nakamura, Noriyuki Sasaki
PURPOSE: To evaluate the effectiveness and safety of the AcrySof IQ PanOptix toric intraocular lens (IOL) with cylinder power of 1.0 D (TFNT20) in a Japanese population with low corneal astigmatism and compare with historical control data for nontoric IOLs. SETTING: Tokyo Dental College Suidobashi Hospital, Tokyo, Japan. DESIGN: Prospective, single-center study. METHODS: Patients ≥20 years old received TFNT20 IOL in at least 1 eye based on Alcon Toric calculator (Holladay Total surgically induced astigmatism)...
2024: Clinical Ophthalmology
https://read.qxmd.com/read/38472953/advances-in-transepithelial-photorefractive-keratectomy-versus-laser-assisted-in-situ-keratomileusis
#25
JOURNAL ARTICLE
Paul Filip Curcă, Cătălina Ioana Tătaru, George Sima, Marian Burcea, Călin Petru Tătaru
(1) Background: Laser-assisted refractive surgery is a safe and effective surgical correction of refractive error. For most patients, both the newer Trans-PRK and the established LASIK technique can produce the required surgical correction, sparking the question of which technique should be opted for. (2) Methods: The study prospectively evaluated 121 patients (230 eyes) for at least one month postoperatively; 66 patients (126 eyes) and 45 patients (85 eyes) returned for 6 months and 1 year follow-up. (3) Results: No statistical difference was recorded at 1 week or 1 month post-operation...
February 23, 2024: Diagnostics
https://read.qxmd.com/read/38469204/severe-astigmatism-secondary-to-large-intraocular-lens-pantoscopic-tilt-because-of-a-malpositioned-haptic-following-cataract-surgery
#26
Jonathan T W Au Eong, Jarryl H J Tsai, Kah-Guan Au Eong
An 80-year-old woman presented with painless blurring of vision and monocular diplopia in her left eye following routine phacoemulsification and monofocal intraocular lens (IOL) implantation 5 weeks earlier. Her uncorrected visual acuity (VA) was 6/60 correctable with pinhole to 6/21. Her best-corrected VA was 6/15 with a subjective refraction of -0.50DS/-5.25DCx37. Her corneal astigmatism was -1.25DCx74. Ophthalmic examination disclosed a severely tilted single-piece posterior chamber IOL in the capsular bag...
March 2024: Journal of Surgical Case Reports
https://read.qxmd.com/read/38468915/assessment-of-a-clinical-test-for-detection-of-alteration-in-visual-perception-due-to-astigmatism
#27
JOURNAL ARTICLE
Eyal Gal, Joan Gispets, Arnold Wilkins, Meira Zyroff, Efrat Netanya, Liat Gantz
PURPOSE: Astigmatism blurs the retinal image of a circular spot along a particular orientation rendering it an elliptical shape. Astigmatic patients demonstrate adaptation to residual astigmatic blur that may affect their discrimination between oval and circular targets. The Wilkins Egg and Ball Test (WEBT) was created to detect altered visual perception due to residual astigmatic blur by discriminating a circle within a row of oval elements. This prospective, cross-sectional study examined the utility of WEBT in detecting uncorrected residual astigmatism on the perception of form symmetry in astigmatic and keratoconic participants as well as normal participants with induced astigmatism at four primary meridians...
2024: Clinical Ophthalmology
https://read.qxmd.com/read/38466760/high-fluence-epithelium-off-accelerated-pulsed-corneal-cross-linking-15-mw-cm-2-7-2-j-cm-2-for-pediatric-keratoconus-a-3-year-retrospective-analysis
#28
JOURNAL ARTICLE
Romina Fasciani, Luca Scartozzi, Simone Bruzio, Gaetano Di Stefano, Luigi Mosca, Laura Guccione, Alessandro Ciardiello, Stanislao Rizzo
PURPOSE: To assess the safety and efficacy of treatment and secondarily determine the topographic changes, visual outcomes, and demarcation line depth after high-fluence pulsed light accelerated cross-linking (ACXL) in pediatric patients (younger than 18 years) with progressive keratoconus. METHODS: This retrospective analysis included 32 eyes (25 children, aged 11 to 18 years), with progressive keratoconus treated with high-energy epithelium-off pulsed light ACXL (7...
March 2024: Journal of Refractive Surgery
https://read.qxmd.com/read/38454381/measurement-of-the-distance-between-corneal-apex-and-pupil-center-in-patients-following-small-incision-lenticule-extraction-or-implantable-collamer-lens-implantation-and-its-correlation-with-the-surgical-induced-astigmatism
#29
JOURNAL ARTICLE
Yishan Qian, Lan Ding, Yanlan Ding, Lin Jiang, Zesheng Liu, Xingtao Zhou
BACKGROUND: To investigate the change in the distance between corneal apex and pupil center after small-incision lenticule extraction (SMILE) or implantable collamer lens (ICL) implantation and its correlation with surgical-induced astigmatism (SIA). METHODS: This study included patients who had undergone SMILE (n = 112) or ICL implantation (n = 110) to correct myopia and myopic astigmatism. The angle kappa was measured using a Scheimpflug imaging device (Pentacam) and represented as Cartesian values between the pupil center and the corneal vertex (X, Y) and chord u ([Formula: see text]orientation), and was compared pre- and post-operative...
March 7, 2024: BMC Ophthalmology
https://read.qxmd.com/read/38453996/one-stage-versus-two-stage-bilateral-implantable-collamer-lens-implantation-a-comparison-of-efficacy-and-safety
#30
JOURNAL ARTICLE
Anna Lorger, Nikolaus Luft, Wolfgang J Mayer, Siegfried G Priglinger, Martin Dirisamer
Implantable collamer lens implantation (ICL) represents a safe and effective treatment for myopia and myopic astigmatism. To compare the outcomes of a bilateral one-stage same day approach to a two-stage approach, the databases of the University Eye Hospital Munich, Ludwig Maximilians-University and Smile Eyes Linz, Austria were screened for eyes that had undergone ICL implantation. Two-stage surgery was performed at an interval of 1 day (17 patients), 2 days (19 patients) and 1 week (2 patients)...
March 7, 2024: Scientific Reports
https://read.qxmd.com/read/38453262/astigmatism-and-maternal-myopia-as-important-factors-affecting-success-rate-of-dims-lens-treatment
#31
JOURNAL ARTICLE
Patricia Domsa, Éva M Bankó, Judit Körtvélyes, Christof Meigen, Rita Széchey, Krisztina Lantos, Zoltán Zsolt Nagy, Adrienne Csutak
OBJECTIVE: To assess the efficacy of myopia control spectacle lenses (defocus incorporated multiple segments/DIMS) in slowing myopia progression among a diverse Central European paediatric population and investigate the contribution of baseline parameters on treatment outcomes. METHODS AND ANALYSIS: This retrospective observational study included 62 individuals aged 4-17 years (mean±SD: 10.21±2.70) with progressing myopia but without ocular pathology with a range of -0...
March 7, 2024: BMJ Open Ophthalmology
https://read.qxmd.com/read/38450471/-intracorneal-selective-stromal-transplantation
#32
JOURNAL ARTICLE
O G Oganesyan, D A Gusak, P V Makarov, P M Ashikova
UNLABELLED: Deep anterior lamellar keratoplasty or penetrating keratoplasty are currently considered the optimal methods of surgical treatment of stromal dystrophies and corneal degeneration. Despite certain advantages and benefits of these methods, they also have significant limitations: involvement of superficial corneal layers in the surgery, need for suturing, development of post-keratoplasty astigmatism etc. PURPOSE: This study aimed to test and describe the new method of closed sutureless keratoplasty (intracorneal selective stromal transplantation), which was indicated in isolated dystrophic and degenerative pathology of the stroma...
2024: Vestnik Oftalmologii
https://read.qxmd.com/read/38446495/biometric-description-of-34-589-eyes-undergoing-cataract-surgery-sex-differences
#33
JOURNAL ARTICLE
Marta Jiménez-García, Francisco J Segura-Calvo, Martín Puzo, Francisco J Castro-Alonso
PURPOSE: To describe gender differences in the biometric parameters of a large sample of cataract patients. Cataract surgery has evolved from a vision restoration to a refractive procedure, and population-based studies are vital to optimise normative databases and post-surgical outcomes. SETTING: Miguel Servet University Hospital, Zaragoza, Spain. DESIGN: Retrospective single-centre observational study. METHODS: The study included 34589 eyes (20004 cataract patients)...
February 28, 2024: Journal of Cataract and Refractive Surgery
https://read.qxmd.com/read/38446490/visual-outcomes-of-combined-use-of-implantable-collamer-lens-implantation-and-laser-corneal-visual-correction-for-myopia-over-18-00-diopters
#34
JOURNAL ARTICLE
Julio Ortega-Usobiaga, Félix González-López, Yanli Peng, Rafael Bilbao-Calabuig, Jaime Beltrán-Sanz, Juan Ramón Larrubia, Fernando Llovet-Osuna
PURPOSE: This retrospective comparative case series explores visual outcomes in patients with extreme myopia receiving an implantable collamer lens (ICL) at -18.00 diopters (D), with central port, followed by bioptics via laser vision correction (LASIK or PRK) to address residual myopia or myopic astigmatism. SETTING: The study was conducted at Clínica Baviera - Aier Eye Hospital Group, Spain. DESIGN: Retrospective analysis of cases. METHODS: The study assessed uncorrected distance visual acuity, corrected distance visual acuity (CDVA), predictability, safety, efficacy, and patient satisfaction after implantation of the ICL and bioptics...
March 5, 2024: Journal of Cataract and Refractive Surgery
https://read.qxmd.com/read/38439397/high-fidelity-laser-beam-shaping-using-liquid-crystal-on-silicon-spatial-light-modulators-as-diffractive-neural-networks
#35
JOURNAL ARTICLE
Paul Buske, Oskar Hofmann, Annika Bonnhoff, Jochen Stollenwerk, Carlo Holly
Spatial light modulators (SLMs) based on liquid crystal on silicon (LCoS) are powerful tools for laser beam shaping as they can be used to dynamically create almost arbitrary intensity distributions. However, laser beam shaping with LCoS-SLMs often suffers from beam shaping artifacts in part caused by unconsidered properties of the LCoS devices: astigmatism that stems from the non-normal incidence of the laser beam on the SLM and the effect commonly referred to as the '0-th diffraction order' that is caused by both the crosstalk between neighboring pixels and the direct reflection at the cover glass of the SLM...
February 26, 2024: Optics Express
https://read.qxmd.com/read/38439374/enhanced-forward-scattering-of-a-cell-in-line-optical-tweezers-with-an-astigmatic-beam
#36
JOURNAL ARTICLE
Lingyao Yu, Shuai Liu, Yi Yang, Sen Geng, Jiawei Tian, Kesong Yan, Zujun Qin, Hai Zhang, Jun Yin
The line optical tweezers (LOT) has been proven to be an alternative technique to manipulating the biological cells because of the bigger potential compared with traditional optical tweezers with a highly focused spot. We deduce the 4 × 4 optical matrix of the astigmatic LOT to investigate the optical characteristics related to the systematic parameters. The comparison of the initial and scattered electric fields by the cell under the astigmatic and stigmatic LOT is implemented to illustrate that the forward scattered light from the astigmatic LOT is much stronger than that from the stigmatic LOT, so as to the cell deformations...
February 12, 2024: Optics Express
https://read.qxmd.com/read/38438495/comparison-of-visual-performance-between-diffractive-bifocal-and-diffractive-trifocal-intraocular-lenses
#37
JOURNAL ARTICLE
Junya Kawamura, Hirotaka Tanabe, Tomohiro Shojo, Tomofusa Yamauchi, Kosuke Takase, Hitoshi Tabuchi
To evaluate the visual performance of a diffractive bifocal intraocular lens (IOL) with + 4.0 D near addition (ZMB00) and a diffractive trifocal IOL with + 2.17 D and + 3.25 D near addition (AcrySof IQ PanOptix TFNT00), we investigated the 10-week postoperative parameters after cataract surgery in which ZMB00 or TFNT00 lenses were implanted bilaterally from 2011 to 2020 (with a 3-month interval between implantation of the right and left lenses). The study included 1448 eyes of 724 patients...
March 4, 2024: Scientific Reports
https://read.qxmd.com/read/38437371/compact-multi-spectral-resolution-wynne-offner-imaging-spectrometer-with-a-long-slit
#38
JOURNAL ARTICLE
Xingyun Zhang, Yanhong Gao, Yiqun Ji, Anwei Feng, Shijia Zhao, Chinhua Wang
Current imaging spectrometers are developed towards a large field of view (FOV) as well as high resolution to obtain more spatial and spectral information. However, imaging spectrometers with a large FOV and high resolution produce a huge image data cube, which increases the difficulty of spectral data acquisition and processing. In practical applications, it is more reasonable and helpful to identify different targets within a large FOV with different spectral resolutions. In this paper, a compact multi-spectral-resolution Wynne-Offner imaging spectrometer with a long slit is proposed by introducing a special diffraction grating with multi-groove densities at different areas...
February 20, 2024: Applied Optics
https://read.qxmd.com/read/38437155/long-term-follow-up-of-pediatric-excimer-laser-assisted-penetrating-keratoplasty-for-congenital-stromal-corneal-dystrophy
#39
JOURNAL ARTICLE
Tim Berger, Andrea Hasenfus, Cecilie Bredrup, Zisis Gatzioufas, Fidelis Flockerzi, Barbara Käsmann-Kellner, Loay Daas, Elias Flockerzi, Per M Knappskog, Espen Stang, Berthold Seitz
PURPOSE: The purpose of this study was to highlight characteristic clinical and microscopic findings and report the long-term follow-up of pediatric excimer laser-assisted penetrating keratoplasty (excimer-PKP) for congenital stromal corneal dystrophy (CSCD). METHODS: A 2-year-old Greek child presented with CSCD at our department. Clinical examination showed bilateral flake-like whitish corneal opacities affecting the entire corneal stroma up to the limbus. Genetic testing identified a mutation of the decorin gene (c...
March 5, 2024: Cornea
https://read.qxmd.com/read/38433240/evaluation-of-a-new-dynamic-real-time-visualization-25%C3%A2-khz-swept-source-optical-coherence-tomography-based-biometer
#40
JOURNAL ARTICLE
Jinjin Yu, Xuanqiao Lin, Xiaomin Huang, Zhenyu Xu, Rui Ning, Kexin Li, Giacomo Savini, Domenico Schiano-Lomoriello, Xingtao Zhou, Jinhai Huang
BACKGROUND: To evaluate the intraobserver repeatability and interobserver reproducibility of a newly developed dynamic real-time visualization 25 kHz swept-source optical coherence tomography (SS-OCT) based biometer (ZW-30, TowardPi Medical Technology Ltd, China) and compare its agreement with another SS-OCT based biometer (IOLMaster 700, Carl Zeiss Meditec AG, Jena, Germany). METHODS: Eighty-two healthy right eyes were enrolled in this prospective observational study...
March 4, 2024: Eye and Vision (London, England)
keyword
keyword
103550
2
3
Fetch more papers »
Fetching more papers... Fetching...
Remove bar
Read by QxMD icon Read
×

Save your favorite articles in one place with a free QxMD account.

×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"

We want to hear from doctors like you!

Take a second to answer a survey question.