(n.) A piece of glass, or other transparent substance, ground with two opposite regular surfaces, either both curved, or one curved and the other plane, and commonly used, either singly or combined, in optical instruments, for changing the direction of rays of light, and thus magnifying objects, or otherwise modifying vision. In practice, the curved surfaces are usually spherical, though rarely cylindrical, or of some other figure.
Example Sentences:
(1) These results demonstrate that increased availability of galactose, a high-affinity substrate for the enzyme, leads to increased aldose reductase messenger RNA, which suggests a role for aldose reductase in sugar metabolism in the lens.
(2) Based on several previous studies, which demonstrated that sorbitol accumulation in human red blood cells (RBCs) was a function of ambient glucose concentrations, either in vitro or in vivo, our investigations were conducted to determine if RBC sorbitol accumulation would correlate with sorbitol accumulation in lens and nerve tissue of diabetic rats; the effect of sorbinil in reducing sorbitol levels in lens and nerve tissue of diabetic rats would be reflected by changes in RBC sorbitol; and sorbinil would reduce RBC sorbitol in diabetic man.
(3) The significance of the differences in these two patterns of actin is discussed in terms of differences in the accommodative ability and static lens shape in these two animals.
(4) The epithelium of Brunner's gland stained intensely with Ricinus communis agglutinin-I (RCA-I), succinylated-WGA (S-WGA) and wheat-germ agglutinin (WGA), moderately with Bandeirea simplicifolia agglutinin-I (BS-I), Concanavalia ensiformis agglutinin (Con A) peanut agglutinin (PNA) and Ulex europaeus agglutinin-I (UEA-I) and occasionally with Dolichos biflorus agglutinin (DBA), Lens culinaris agglutinin (LCA) and soybean agglutinin (SBA).
(5) That is, he believes, to look at massively difficult, interlocking problems through too narrow a lens.
(6) The advantages of the incision through the pars plana ciliaris are (1) easier approach to the vitreous cavity, (2) preservation of the crystalline lens and an intact iris, and (3) circumvention of the corneal and chamber angle complications sometimes associated with the transcorneal approach.
(7) The third patient was using an extended-wear soft contact lens for correction of residual myopia.
(8) The cellularity depends on the type of the lens and the material of the lens and on the clinical picture of the disease.
(9) Although lens haemagglutinins were detected in 6 out of 7 rabbits, in only 3 of the 6 animals did the titre reach a maximum of 1:640.
(10) Dioptric aniseikonia was calculated between 1 month and 24 months after surgery (with Gruber's and Huber's computer program) on the basis of most recently obtained values (bulb axis length, depth of the anterior chamber, lens thickness, necessary refraction), and compared with subjective measurements taken with the phase difference haploscope.
(11) We propose that a channel with these properties could contribute to maintenance of lens transparency and fluid balance.
(12) Although the lens did not alter stereopsis, it did produce severe color discrimination losses for normal and dichromatic subjects.
(13) The general efficacy of this intraocular lens compared with other anterior chamber lenses was not addressed in this study.
(14) However, the monkey lens low molecular weight proteins differ from the human low molecular weight proteins in charge as well as molecular weight determined by SDS-PAGE.
(15) Fifty-five myopic naval personnel with no previous contact lens experience were put through a three-week study using these contact lenses.
(16) A Stryker turning frame was used during surgical removal of a posterior displaced lens.
(17) The biocompatibility and fixation of a new silicone intraocular lens was evaluated in the cat eye.
(18) Both organisms have previously been found to be sequestered in the posterior lens capsule by histological and microbiological examination of excised capsular specimens.
(19) Previous experiments had demonstrated that the receptors for the lectins soybean agglutinin (SBA), wheat germ agglutinin, concanavalin A and Lens culinaris agglutinin all were relatively uniformly distributed on both myoblasts and myotubes, and that SBA receptors were capable of rapid redistribution on myotubes but not myoblasts at 4 degrees C (Sawyer & Akeson, 1983).
(20) The relative permittivity and conductivity of rabbit eye lens were measured in the frequency domain between 2 and 18 GHz at temperatures of 37 and 20 degrees C. An analysis of the data suggested that a significant proportion of the bulk water in nuclear and cortical lens tissue may behave differently to pure water.
Prescription
Definition:
(n.) The act of prescribing, directing, or dictating; direction; precept; also, that which is prescribed.
(n.) A direction of a remedy or of remedies for a disease, and the manner of using them; a medical recipe; also, a prescribed remedy.
(n.) A prescribing for title; the claim of title to a thing by virtue immemorial use and enjoyment; the right or title acquired by possession had during the time and in the manner fixed by law.
Example Sentences:
(1) Treatment termination due to lack of efficacy or combined insufficient therapeutic response and toxicity proved to be influenced by the initial disease activity and by the rank order of prescription.
(2) Senator Bernie Sanders of Vermont, who is also seeking the Democratic presidential nomination, recently proposed a bill that would ease the financial burden of prescription drugs on elderly Americans by allowing Medicare, the national social health insurance program, to negotiate with the pharmaceutical companies to keep prices down.
(3) Altogether, 29% of the drivers had evidence of alcohol, marijuana, cocaine, prescription or nonprescription stimulants, or some combination of these, in either blood or urine.
(4) Using the results of a first evaluation made in 1989, a series of recommendations were made to reduce the prescription of drugs with a low intrinsic value (LIV).
(5) They are about to use a newer version to write prescriptions and office visit notes and to find general medical and patient-specific information.
(6) Of these 1224 prescriptions, 82.8% were for veterinary preparations, 6.6% were for human preparations and 10.6% were for other drugs.
(7) As Kuwait is one of the countries where the total consumption of antibiotics is very high as compared to most of the western countries, we are inclined to assume that this generous policy for the prescription of especially ampicillin and other broad spectrum antibiotics in uncomplicated infections has generated this serious consequence.
(8) An analysis of my own practice prescriptions showed that only 31% were repeat prescriptions, and this concurs with national figures.
(9) She also claimed Salazar tried to get her to take prescription thyroid medicine to lose weight after the birth of her son.
(10) Despite the small number of patients studied, these results suggest the importance of limiting the prescription of 25 OH D3 to children suffering from renal osteodystrophy only after having assessed unequivocally an osteomalacic component by histodynamical criteria.
(11) When that prescription was gone, he said he was still in pain, so the doctor wrote a second prescription.
(12) Results indicate that special instruction was responsible for improved understanding of the underlying disease and also improved compliance with physicians' prescriptions.
(13) The recognition that all minor tranquillizers carry the risk of dependence has had a significant impact in their prescription over the years.
(14) The physician's suggestions have significant impact on elderly patients, and a social prescription often enhances a medical regimen.
(15) In our countries, a good prescription of analysis would help to reduce hospital costs without modifying the efficiency of the diagnosis approach.
(16) Although prostheses are not anatomical avatars, careful appliance prescription and training, coordinated with the child's growth and developmental changes, can optimize the benefits the child derives from the prosthesis.
(17) These may be reduced partly by greater care in the prescription and execution of this treatment, but it is impossible to completely avoid them; it is therefore desirable in certain cases to avoid systematic prophylactic treatment by using other first line methods such as early mobilisation, elastic contention, hemodilution or indeed in certain cases the insertion of a vena cava filter.
(18) The results suggest that compliance in using the initial prescription for sublingual nitroglycerin can be improved when the physician supervises the first dose.
(19) It was concluded that a single spectrum could validly be used to represent both male and female speech in the frequency region important for hearing aid gain prescriptions: 250 Hz through 6300 Hz.
(20) Chinese drugs constitute a unique medicinal system that features the following three subsystems: subsystem of medicinal substances consisting of traditional theories such as "four properties and five tastes of drugs" and "the principal, adjuvant, auxiliary and conduct ingredients in a prescription' , etc; subsystem of pharmacological actions comprising the theory of "ascending, descending, floating and sinking", etc; Subsystem of human body's functions incorporating the theory of "drugs to act on the channels".