(n.) A point in which the rays of light meet, after being reflected or refrcted, and at which the image is formed; as, the focus of a lens or mirror.
(n.) A point so related to a conic section and certain straight line called the directrix that the ratio of the distace between any point of the curve and the focus to the distance of the same point from the directrix is constant.
(n.) A central point; a point of concentration.
(v. t.) To bring to a focus; to focalize; as, to focus a camera.
Example Sentences:
(1) Work on humoral responses has focused on lysozyme, the hemagglutinins (especially in the oyster), and the clearance of certain antigens.
(2) Family therapists have attempted to convert the acting-out behavioral disorders into an effective state, i.e., make the family aware of their feelings of deprivation by focusing on the aggressive component.
(3) Now, as the Senate takes up a weakened House bill along with the House's strengthened backdoor-proof amendment, it's time to put focus back on sweeping reform.
(4) Focusing on two prospective payment systems that operated concurrently in New Jersey, this study employs the hospital department as the unit of analysis and compares the effects of the all-payer DRG system with those of the SHARE program on hospitals.
(5) The review provides an update of drug-induced pulmonary disorders, focusing on newer agents whose effects on the lung have been studied recently.
(6) This study reports the analysis of a transvestite man through focusing on his marital interaction and his wife's complementary behavior to his perversion.
(7) Subsequent isoelectric focusing in sucrose revealed an isoelectric point of 9.0-9.2.
(8) Streaming is shown to occur in water in the focused beams produced by a number of medical pulse-echo devices.
(9) Other recommendations for immediate action included a review of the Nursing and Midwifery Council and the General Medical Council for doctors, with possible changes to their structures; the possible transfer of powers to launch criminal prosecutions for care scandals from the Health and Safety Executive to the Care Quality Council; and a new inspection regime, which would focus more closely on how clean, safe and caring hospitals were.
(10) For enrolled nurses an increase in "Intrinsic Job Satisfaction" was less well maintained and no differences were found over time on "Patient Focus".
(11) Isoelectric points for two normal liver isoenzymes demonstrable by isoelectric focusing are pH5.9 and 6.0.
(12) "As part of this de-leveraging process, the group will also focus on eliminating any loss-making businesses."
(13) Serum and pituitary gonadotropins, hypothalamic luteinizing hormone-releasing hormone (LHRH), and the profile of FSH forms across the isoelectric focusing gel were determined by radioimmunoassay.
(14) However, the City focused on the improvement in the fortunes of its Irish business, Ulster bank, and its new mini bad bank which led to a 1.8% rise in the shares to 368p.
(15) The primary focus of both nonpharmacologic and pharmacologic therapy should be to control systemic blood pressure in a simple, affordable, and nontoxic fashion that provides an adequate quality of life.
(16) Proper function of proteinases such as PA may require focusing of activity on a cellular level.
(17) The organisation initially focused on education, funding the Indian company BYJU’s, which helps students learn maths and science, and the Nigerian company Andela, which trains African software developers.
(18) Inclusion-forming and non-inclusion-forming elementary bodies focused in one band at pI 4.64.
(19) This review focused on the methods used to identify language impairment in specifically language-impaired subjects participating in 72 research studies that were described in four journals from 1983 to 1988.
(20) Network #5 conducted a pilot study of state survey results to profile data for Medical Review Board (MRB) analysis and to identify potential areas where educational activities could be focused.
Presbyopia
Definition:
() A defect of vision consequent upon advancing age. It is due to rigidity of the crystalline lens, which produces difficulty of accommodation and recession of the near point of vision, so that objects very near the eyes can not be seen distinctly without the use of convex glasses. Called also presbytia.
Example Sentences:
(1) The most common eye disease are cataract, refractive error and presbyopia, and diseases of the conjunctiva and sclera.
(2) In addition some individuals (7%) were found to develop early presbyopia.
(3) Their use for presbyopia, aphakia, and glaucoma is considered.
(4) Both the decrease in retinal illumination and the presbyopia accounted for only a trivial proportion of the acuity loss.
(5) Detailed understanding of these mechanisms and the environmental, dietary, and behavioural factors that may influence the development of presbyopia will require controlled studies and, in some cases, invasive experimental manipulations that can only be achieved through the use of an animal model.
(6) Diagnostic standards have a big practical importance in the ophthalmological geriatrics above all in glaucoma, apart from the presbyopia, which depends to the age in a big way.
(7) Complications, such as scarring from intersecting keratotomy incisions, irregular astigmatism resulting from multiple reoperations, and overcorrections with the attendant early onset of symptomatic presbyopia are becoming much less frequent.
(8) The results are described of a 10-year study of the longitudinal changes in the static response of an individual subject during the approach to absolute presbyopia.
(9) They present a variable refractive index which can be used to produce the necessary addition needed for presbyopia.
(10) The history of prostheses for presbyopia is reviewed with an account of the development of variable focus spectacles.
(11) All forms of ophthalmic correction for presbyopia require compromises in viewing flexibility and visual function.
(12) A 33-year-old white man developed premature presbyopia and anisocoria as initial manifestations of acute pandysautonomia.
(13) The corneoscleral incision could be made even smaller, the lens diaphragm would be conserved more physiologically, and a method of therapy for presbyopia might eventually be possible.
(14) The resulting data indicate significantly lower best-corrected distance visual acuities, a greater prevalence of many ocular pathologies, less frequent occurrence of myopia, and an earlier onset of presbyopia than is found in the general United States population.
(15) Is it true that environmental UVR is also the prime contributor in the deleterious lenticular changes that may begin with premature presbyopia, as has been postulated?
(16) The age at onset of presbyopia showed a slightly higher rate of concordance in the MZ than in the DZ pairs.
(17) Monovision, the use of a monocular addition for near viewing, is a clinical technique sometimes used to correct presbyopia.
(18) The genetic and environmental contributions to physical aging (hair graying, balding, presbyopia) and longevity (age at death) were examined by within-pair comparison in monozygotic (MZ) and dizygotic (DZ) twins in later adulthood.
(19) Presbyopia, cataract, and glaucoma are some of the visual constraints that may play an important role in making it difficult for the person to read the informed consent form.
(20) We have conducted two experiments to investigate the effect of monovision and other contact lens corrections for presbyopia upon peripheral visual acuity.