نتایج جستجو برای: intracorneal ring
تعداد نتایج: 123125 فیلتر نتایج به سال:
the effect of the presence of perforations on he stresses of a plate is a problem which is of great interest in structural design and in the mathemattical theory of elasticity. among the many hole patterns that are likely to require consideration is the ring of equally spaced circular holes. the present worke investigates stress & strain analysis of a thin isotropic circular plate containing a ...
Purpose. To describe a unique case of O. anthropi keratitis associated with a rare manifestation of Descemet's membrane detachment and intracorneal hypopyon and to discuss challenges in diagnosis and management. Methods. Best-corrected visual acuity was measured with Snellen letters. Corneal scrapings were performed and aerobic, viral, herpetic, acid-fast bacilli, Acanthamoeba, and fungal stain...
PURPOSE To evaluate the change in reading-performance parameters after implantation of the Kamra small-aperture intracorneal inlay over a 2-year follow-up. SETTING University Eye Clinic, Paracelsus Medical University, Salzburg, Austria. DESIGN Cohort study. METHODS This study comprised naturally emmetropic presbyopic patients. Bilateral reading acuity, reading distance, reading speed, and...
BACKGROUND The microscopic and microbial features of the spreading epidermal collarettes of canine exfoliative superficial pyodermas are poorly characterized. OBJECTIVES To characterize the clinical, cytological, microbial and histopathological features of epidermal collarettes in five dogs. RESULTS Cytology from the margins of collarettes identified neutrophils, extracellular and intracell...
PURPOSE To test the hypothesis that coated microneedles can deliver drugs into the eye via intrascleral and intracorneal routes in a minimally invasive manner. METHODS Solid metal microneedles measuring 500 to 750 microm in length were coated with model drugs, protein, and DNA; inserted into nonpreserved human cadaveric sclera; and imaged. Microneedles coated with sodium fluorescein were then...
let r be an associative ring with unity. an element a in r is said to be r-clean if a = e+r, where e is an idempotent and r is a regular (von neumann) element in r. if every element of r is r-clean, then r is called an r-clean ring. in this paper, we prove that the concepts of clean ring and r-clean ring are equivalent for abelian rings. further we prove that if 0 and 1 are the only idempotents...
let r be an associative ring with unity. an element a in r is said to be r-clean if a = e+r, where e is an idempotent and r is a regular (von neumann) element in r. if every element of r is r-clean, then r is called an r-clean ring. in this paper, we prove that the concepts of clean ring and r-clean ring are equivalent for abelian rings. further we prove that if 0 and 1 are the only idempotents...
Background and Objective: Evaluation of the results, safety, and stability of ferrara intracorneal ring segment (FICRS) implantation for Keratoconus correction (age range was 24.39±8.32 years). Materials and Methods: In this clinical trial study, 64 eyes of 57 patients with keratoconus and clear cornea that had FICRS implantation were studied. Uncorrected visual acuity (UCVA), best-spectacl...
in this work, we investigate the transfer of some homological properties from a ring $r$ to its amalgamated duplication along some ideal $i$ of $r$ $rbowtie i$, and then generate new and original families of rings with these properties.
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