A retrospective review was conducted of 50 patients with bilateral Array multifocal intraocular lens implantation. The purpose was to assess their visual performance and adaptability to the visual world of multifocality. On binocular visual acuity examination all patients obtained, without any correction, Snellen 20/25 or more for distance and Snellen 20/40 (distant equivalent) or more for near. Contrast sensitivity for far and near was slightly reduced. Occasionally, 44% of the patients use spectacles especially for small print. All patients were very pleased with their functional vision without spectacles and in general had only minor problems with optical aberrations. Factors contributing to success and patient satisfaction are refractive cataract surgery and careful selection of patients through meticulous pre- and postoperative counselling on the new visual status.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Ultra high density imaging arrays in diffuse optical tomography for human brain mapping improve image quality and decoding performance.
Sci Rep
January 2025
Mallinckrodt Institute of Radiology, Washington University School of Medicine, 4515 McKinley Ave., St. Louis, MO, 63110, USA.
Functional magnetic resonance imaging (fMRI) has dramatically advanced non-invasive human brain mapping and decoding. Functional near-infrared spectroscopy (fNIRS) and high-density diffuse optical tomography (HD-DOT) non-invasively measure blood oxygen fluctuations related to brain activity, like fMRI, at the brain surface, using more-lightweight equipment that circumvents ergonomic and logistical limitations of fMRI. HD-DOT grids have smaller inter-optode spacing (~ 13 mm) than sparse fNIRS (~ 30 mm) and therefore provide higher image quality, with spatial resolution ~ 1/2 that of fMRI, when using the several source-detector distances (13-40 mm) afforded by the HD-DOT grid.
View Article and Find Full Text PDFDelivering Volumetric Hyperthermia to Head and Neck Cancer Patient-Specific Models Using an Ultrasound Spherical Random Phased Array Transducer.
Bioengineering (Basel)
December 2024
Department of Radiation Oncology, University of California, San Francisco, San Francisco, CA 94115, USA.
In exploring adjuvant therapies for head and neck cancer, hyperthermia (40-45 °C) has shown efficacy in enhancing chemotherapy and radiation, as well as the delivery of liposomal drugs. Current hyperthermia treatments, however, struggle to reach large deep tumors uniformly and non-invasively. This study investigates the feasibility of delivering targeted uniform hyperthermia deep into the tissue using a non-invasive ultrasound spherical random phased array transducer.
View Article and Find Full Text PDFDesign of a Novel Microlens Array and Imaging System for Light Fields.
Micromachines (Basel)
September 2024
School of Optoelectronic Engineering, Xi'an Technological University, Xi'an 710021, China.
Light field cameras are unsuitable for further acquisition of high-quality images due to their small depth of field, insufficient spatial resolution, and poor imaging quality. To address these issues, we proposed a novel four-focal-square microlens and light field system. A square aspheric microlens array with four orthogonal focal lengths was designed, in which the aperture of a single lens was 100 μm.
View Article and Find Full Text PDFMobilizing Stockpile of Nature: Phytochemicals, Herbal Extracts, and Dietary Supplements for Managing Metabolic Diseases with Concentric Focus on Obesity.
Endocr Metab Immune Disord Drug Targets
September 2024
Division of Pharmacology, Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology, Mesra, Ranchi, 835215, Jharkhand, India.
Obesity and associated health impairments are proven to exhibit multifocal health disorders along with increasing co-morbidity. Underlying obesity pathology is linked up with almost every major disease, which may increase the risk of heart disease, hypertension, diabetes, cancer, osteoarthritis, etc. The prevalence of overweight and obesity is on the rise around the world, which enormously affects the life span of individuals.
View Article and Find Full Text PDFInterstitial dual-mode ultrasound with a 3-mm MR-compatible catheter for image-guided HIFU and directional in-vitro tissue ablations.
IEEE Trans Ultrason Ferroelectr Freq Control
September 2024
Current interstitial techniques of tumor ablation face challenges that ultrasound technologies could meet. The ablation radius and directionality of the ultrasound beam could improve the efficiency and precision. Here, a 9-gauge MR-compatible dual-mode ultrasound catheter prototype was experimentally evaluated for Ultrasound Image-guided High Intensity Focused Ultrasound (USgHIFU) conformal ablations.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!