(a.) Of or pertaining to the dioptre, or to the metric system of numbering glasses.
(n.) A dioptre. See Dioptre.
(a.) Alt. of Dioptrical
Example Sentences:
(1) 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.
(2) Accommodation measurements of nine young, emmetropic subjects were obtained with an infrared optometer while they viewed superimposed horizontal and vertical square-wave gratings at various dioptric separations.
(3) The relationships between dioptric blur, pupil size, retinal eccentricity, and retinal sensitivity were investigated in the central 5 degrees of the visual field in 10 normal subjects using the Humphrey Field Analyzer.
(4) inhomogenities in the dioptric media, reflections at refracting surfaces, diffraction at the pupil borders, and the distribution of scattered light in the retina it becomes possible to develop indications for the construction of a focal optical stimulator.
(5) The elements of the dioptic power matrix have previously been interpreted in terms of power along particular meridians with the off-diagonal elements interpreted as a new form of dioptric power called torsional power.
(6) If the positions of the principal points of the crystalline lens are conjectured, its equivalent power and that of the eye can be calculated as described from ocular dioptrics.
(7) These ultra-thin soft lenses have proved extremely successful in case of visual defects ranging from - 16,0 to + 16,0 dioptrics.
(8) The dioptric elements in each ommatidium consist of a laminar cornea, which is flat externally and convex internally, and a bipartite crystalline cone.
(9) An alternative method for evaluating lens resolution is to determine the resolution efficiency (the relative percentage performance of a lens compared to a diffraction-limited lens of the same dioptric power).
(10) The former figure has the dioptric value M X sin2 alpha, the latter M X cos2 alpha.
(11) We analyzed 450 consecutive cases of intraocular lens implantation (omitting only two inadvertent implantations in patients with high myopia) to determine the dioptric lens power in each case required to produce emmetropia.
(12) The analysis contains four diagrams: a plot of the raw keratoscope data for quality control, a three-dimensional wire model of corneal surface power distribution, a plot of dioptric point surface powers, and a color-coded contour map of corneal surface powers.
(13) The eyelid fusion was temporarily cut and opened at about five-month intervals, and the dioptric power and axial length of test and control eyes were measured.
(14) Using both our own and published data, we compared the effects of diffusive blur, dioptric blur, and eccentric viewing on contrast sensitivity for letter and grating targets.
(15) They produce a magnified image, but it is an image that suffers from significant dioptric blur, diminished somewhat by use of a peep sight in the bowstring which functions as an aperture stop.
(16) The dioptric apparatus of each ommatidia includes a biconvex corneal lens and a spherical crystalline cone that is secreted by two cone cells.
(17) The eye consists of about 3600-3700 ommatidia, each containing a dioptric apparatus formed by a lamellated corneal lens and a eucone-type crystalline cone.
(18) We defined the depth of focus at a given spatial frequency to be the dioptric range for which the modulation transfer exceeds 50% of its peak value.
(19) Dioptric blur had a strong negative effect on Snellen acuity, consistent with previous studies, but had little effect on grating acuity.
(20) Methods are described for testing hypotheses on mean dioptric power and on variance-covariance of dioptric power for one and more than one population.
Telescope
Definition:
(n.) An optical instrument used in viewing distant objects, as the heavenly bodies.
(a.) To slide or pass one within another, after the manner of the sections of a small telescope or spyglass; to come into collision, as railway cars, in such a manner that one runs into another.
(v. t.) To cause to come into collision, so as to telescope.
Example Sentences:
(1) Extraction tools included flexible, telescoping sheaths advanced over the lead to dilate scar tissue and apply countertraction, deflection catheters, and wire basket snares.
(2) But towards the end of the decade, Nasa expects to launch the James Webb Space Telescope , which has been designed to look further back into the history of the universe.
(3) However, similarly tested Keplerian telescopes exhibited significantly higher MTF's with vertical gratings.
(4) When the unmagnified peripheral visual field was unobstructed during adaptation, VOR gain increases were significantly less than when the unmagnified peripheral visual field was occluded, and were similar to those observed during adaptation without the wearing of telescopic spectacles at all.
(5) "When you live over here you see the situation from the other end of the telescope and you see things that English people simply don't."
(6) The periodontal and prosthetic treatment were carried out and 16 Konus telescope dentures were applied for 11 patients.
(7) An original apparatus and a new kind of mechanical suture were used in experiment and in clinic for the formation of telescopic anastomosis.
(8) "The E-ELT will have almost as much light collecting area as all the telescopes ever built, put together," said Professor Niranjan Thatte of Oxford University.
(9) 1) In polishing the axial surface of the inner crown of the conic telescope crown system, the milling machine with a polishing disk facilitated specular finishing without causing undercutting in the region from the occlusal surface to the dental cervix.
(10) The isolated site is home to several other facilities, including the European Southern Observatory's Very Large Telescope , and has excellent atmospheric conditions for stargazing.
(11) "When I was a boy, I was doing both music and science: I belonged to an astronomy club, we built telescopes, we looked at the stars.
(12) Direct blocking by crown blocks, bridge prostheses, connecting bars and telescopes should include, as far as possible, all teeth.
(13) The bronchial anastomosis was made by the telescoping technique.
(14) Patient acceptance of the telescopic systems was 62%, and of the microscopic systems, 96%.
(15) Just a short stroll from the start of this walk, the Norman Lockyer Observatory still holds two of his telescopes.
(16) Telescopic spectacles are used as aids for the visually impaired in order to increase effective visual acuity.
(17) A review of 385 proximal fractures of the femur treated with a telescopic screw system revealed that in nine cases the device had cut out of the head of the femur necessitating its removal.
(18) The 3.5, 4.0, and 5.0 30-cm Storz bronchoscopes with a 3.95-mm (outside diameter) telescope lens were used in 10 mongrel dogs weighing between 8 and 15 kg.
(19) The following therapeutic proposal was adapted: On the maxilla, a three-step procedure: first step: building of metal copings on 13, 16 and 26 and metal-ceramic crowns on 11 and 21, second step: building of telescop crowns on 16 and 26 and clasps on 13, 11 and 21, third step: casting of the removable partial denture framework and soldering to the telescop crowns and clasps.
(20) Astronomer Jose Madiedo, who leads the Midas project at the University of Huelva, saw footage of the strike soon after the telescopes' software had processed the impact on 11 September 2013.