Effect of Corneal Tilt on the Determination of Asphericity [PDF]
Sensors, 2021 Purpose: To quantify the effect of levelling the corneal surface around the optical axis on the calculated values of corneal asphericity when conic and biconic models are used to fit the anterior corneal surface.
Alejandra Consejo +2 more
exaly +4 more sources
Effect of intracorneal ring segment implantation on corneal asphericity [PDF]
International Journal of Ophthalmology, 2018 AIM: To evaluate the visual, refractive and corneal asphericity changes after intrastromal corneal ring segment (ICRS) implantation for visual rehabilitation of keratoconus. METHODS: A total of 42 eyes of 32 patients were included.
Ceren Durmaz Engin +2 more
exaly +3 more sources
Diagnostics, 2020 Background: in patients with gastroenteropancreatic neuroendocrine tumors (GEP-NET), the mTOR inhibitor everolimus is associated with significant improvement in progression-free survival (PFS).
Michael C Kreissl +2 more
exaly +3 more sources
Corneal Spherical Aberration and Corneal Asphericity after Small Incision Lenticule Extraction and Femtosecond Laser-Assisted LASIK [PDF]
Journal of Ophthalmology, 2017 Purpose. To investigate corneal spherical aberration and corneal asphericity after small incision lenticule extraction (SMILE) and femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK). Methods.
Hui Zhang, Yan Wang, Hua Li
doaj +2 more sources
Ethnicity-Based Differences in Corneal Asphericity: Intraocular Lens Power Calculation, Image Quality, and Visual Acuity After Cataract Surgery Using Eye Models [PDF]
Clinical OphthalmologyKamal K Das,1 Rajaraman Suryakumar,1 Wei Lu,1 Andrew Maxwell2 1Research and Development, Alcon Research LLC, Fort Worth, TX, USA; 2California Eye Institute, Fresno, CA, USACorrespondence: Kamal K Das, Alcon Research LLC, 6201 South Freeway, Fort Worth ...
Das KK, Suryakumar R, Lu W, Maxwell A
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Interchangeability of corneal curvature and asphericity measurements provided by three different devices [PDF]
International Journal of Ophthalmology, 2019 AIM: To evaluate the interchangeability of keratometric and asphericity measurements provided by three measurement systems based on different optical principles. METHODS: A total of 40 eyes of 40 patients with a mean age of 34.1y were included.
David P Piñero +1 more
exaly +2 more sources
The sourcil roundness index is a useful measure for quantifying acetabular concavity asphericity
Scientific Reports, 2023 This study aimed to clarify the clinical utility of the sourcil roundness index (SRI), a novel index for quantifying the asphericity of the acetabular concavity, by determining (1) the difference in the SRI between dysplastic and normal hips and (2) the ...
Kenji Kitamura +10 more
doaj +2 more sources
Repeatability of corneal curvature with the MS-39 anterior segment tomographer in a cataractous population. [PDF]
PLoS ONEPurposeThe purpose of this study was to investigate the repeatability of optical coherence tomography in measuring radius of curvature (ROC) and asphericity (Q) of corneal epithelium, stroma and endothelium in a large patient cohort.MethodsIn this ...
Achim Langenbucher +5 more
doaj +2 more sources
Q-value individualized CLEAR lenticule extraction preserves corneal asphericity and minimizes spherical aberration while maintaining optical zone predictability [PDF]
Scientific ReportsRefractive surgery enhances visual performance by reshaping the cornea. At the same time, optical aberrations typically increase, affecting visual quality.
Janne J. Järvenpää
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Clinical outcomes of Bowman-Stromal inlay and corneal collagen crosslinking in contralateral eyes in patients with progressive keratoconus [PDF]
Indian Journal of OphthalmologyPurpose: This study aims to report the outcomes of Bowman–Stromal Inlay (BSI) versus corneal collagen crosslinking (CXL) in patients with progressive keratoconus.
Neha Jain +5 more
doaj +2 more sources