Intraocular lenses (IOLs) are routinely used to replace cataractous crystalline lenses. Most current models have a biconvex design that reduces optical quality in the periphery since they are optimized only for central vision. Inverted meniscus IOLs are optimized to achieve similar optical performance to phakic eyes in the peripheral retina. Additionally, biconvex IOLs have been predicted to induce image shifts in the peripheral visual field. The aim of this study was to evaluate whether inverted meniscus IOLs produce a more consistent object-to-image mapping on the retina. For this purpose, retinal images before and after IOL implantation were recorded in subjects implanted with either standard biconvex or inverted meniscus IOLs, and the positions of landmarks were compared. The results showed that radial displacement of retinal landmarks increased with eccentricity in biconvex IOLs, as expected, but tended to have a flatter progression with smaller values in patients implanted with inverted meniscus lenses.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11640560 | PMC |
| http://dx.doi.org/10.1364/BOE.547787 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Inverted meniscus IOLs reduce image shifts in the periphery compared to biconvex IOLs.
Biomed Opt Express
December 2024
Laboratorio de Óptica, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain.
Intraocular lenses (IOLs) are routinely used to replace cataractous crystalline lenses. Most current models have a biconvex design that reduces optical quality in the periphery since they are optimized only for central vision. Inverted meniscus IOLs are optimized to achieve similar optical performance to phakic eyes in the peripheral retina.
View Article and Find Full Text PDFVisually relevant on-bench through-focus analysis of intraocular lenses.
Biomed Opt Express
December 2024
Laboratorio de Óptica, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain.
Cataract surgery involves the implantation of an intraocular lens (IOL) to replace the opacified crystalline lens. Monofocal IOLs, the most common type, are intended to have the eye in focus at a given distance, usually at infinity. Simultaneous vision IOLs (SVIOLs) and extended depth of focus (EDOF) aim to minimize postoperative dependence on spectacles by providing either multiple foci or an extended depth of focus.
View Article and Find Full Text PDFPreparing Chamber Slides With Pressed Collagen for Live Imaging Monolayers of Primary Human Intestinal Stem Cells.
Bio Protoc
November 2024
Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, NC, USA.
Primary human intestinal stem cells (ISCs) can be cultured and passaged indefinitely as two-dimensional monolayers grown on soft collagen. Culturing ISCs as monolayers enables easy access to the luminal side for chemical treatments and provides a simpler topology for high-resolution imaging compared to cells cultured as three-dimensional organoids. However, the soft collagen required to support primary ISC growth can pose a challenge for live imaging with an inverted microscope, as the collagen creates a steep meniscus when poured into wells.
View Article and Find Full Text PDFA Unique Upside-down Flip-lid Type of Lateral Tibial Plateau Fracture Fragment in a Bicondylar Tibial Plateau Fracture Managed with Dual Plates and Raft Screws.
J Orthop Case Rep
August 2024
Department of Orthopaedics, Paras HMRI Hospital, Patna, Bihar, India.
Introduction: Bicondylar fractures are relatively common, yet those involving an elevated lateral tibial condyle fragment pose a unique challenge due to their atypical presentation. Existing classification systems inadequately describe this elevation, leading to varied terminology like "flip lid" or "reverse-Schatzker type" fractures in the literature.
Case Report: We present a case where the anterolateral osteochondral fragment was elevated and inverted, resulting from a rare mechanism where the left knee was crushed between two vehicles without axial force.
Functional performance of a bi-layered chitosan-nano-hydroxyapatite osteochondral scaffold: a pre-clinical tribological study.
R Soc Open Sci
January 2024
Institute of Medical and Biological Engineering, University of Leeds, Leeds, UK.
Osteochondral grafts are used for repair of focal osteochondral lesions. Autologous grafts are the gold standard treatment; however, limited graft availability and donor site morbidity restrict use. Therefore, there is a clinical need for different graft sources/materials which replicate natural cartilage function.
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!