(a.) Having the qualities of a speculum, or mirror; having a smooth, reflecting surface; as, a specular metal; a specular surface.
(a.) Of or pertaining to a speculum; conducted with the aid of a speculum; as, a specular examination.
(a.) Assisting sight, as a lens or the like.
(a.) Affording view.
Example Sentences:
(1) In a prospective study begun in March 1986, specular-microscopic endothelial cell photographs were taken in non-selected patients with primary, chronic, open-angle glaucoma who had not had intraocular surgery.
(2) This structure corresponds in distribution to the skin along the back of the fetus and likely represents a specular reflection from the skin surface.
(3) The effects of osmotic stress on corneal endothelium were investigated by exposing rabbit corneas to anisosmotic conditions, and then perfusing the corneas with isosmotic glutathione bicarbonate Ringer solution for 4 hr at 35 degrees C. During the perfusion, endothelial function was assessed by measuring corneal thickness with a specular microscope.
(4) Specular microscopic examination of the endothelium after the application of iodoacetamide showed progressive degradation of the integrity of the cellular structure; after 6 hr, there were no discernible cell borders.
(5) We developed an apparatus for automated morphometry of the corneal endothelium, which was photographed through a specular microscope connected to a video camera, and the images were stored on a video tape.
(6) Endothelial specular photography during an attack reveals dramatic changes: large black nonreflecting areas between quite normal-looking hexagonal cells.
(7) 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.
(8) The specular photomicrographic characteristics were similar to those of fibroblast-like cells and foreign-body giant cells, which had been shown on the surfaces of extracted implanted intraocular lenses by the lens implant cytology technique.
(9) Excellent photographs of corneal endothelial cells may be obtained during clinical examinations with the specular microscope.
(10) Specular microscopy and computer-assisted morphometry was used to quantify central and peripheral endothelial cell density (ECD), coefficient of variation (COV) and the mean and standard deviation of the shape factor (S) over an 18-month period.
(11) We present applications to speckle reduction, detection of specular reflectors, attenuation estimation and ultrasound imaging.
(12) An off-specular peak, located at an angle of reflection considerably different from the angle of incidence, was observed to have an intensity comparable with that of the specular reflection peak.
(13) While some deep corneal opacities are easily diagnosed clinically, the nature of others may be difficult to determine and specular microscopy is a valuable aid in such cases.
(14) This synergistic combination did not alter donor human corneal morphology under specular microscopy, nor did it inhibit rabbit corneal endothelial cell division preserved and propagated in antifungal supplemented MK medium.
(15) In cases with pseudoprecipitates examination of the corneal endothelium with the specular microscope does not reveal any specific findings, only an edema of the corneal endothelium (so-called cornea pseudoguttata).
(16) An original system of grading of the corneal endothelial specular reflection, as assessed with a Haag-Streit 900 slit-lamp biomicroscope, has been shown to have a very highly significant relation to the endothelial cell density measured by contact specular photomicroscopy.
(17) Specular microscopy provides a level of magnification and differentiation of detail which approaches that of a histological examination, and has the advantage of being a noninvasive procedure.
(18) The resins characterized for Black patients had a higher degree of specular reflectance and were more opaque than resins for Caucasians.
(19) Endothelial repair was then studied using specular microscopy, histological staining, pachymetry, and autoradiographic analysis of the incorporation of tritiated thymidine into nuclear DNA.
(20) Observations were made with the aid of several microscopic techniques: light and specular microscopy, transmission and scanning electron microscopy.
Vision
Definition:
(v.) The act of seeing external objects; actual sight.
(v.) The faculty of seeing; sight; one of the five senses, by which colors and the physical qualities of external objects are appreciated as a result of the stimulating action of light on the sensitive retina, an expansion of the optic nerve.
(v.) That which is seen; an object of sight.
(v.) Especially, that which is seen otherwise than by the ordinary sight, or the rational eye; a supernatural, prophetic, or imaginary sight; an apparition; a phantom; a specter; as, the visions of Isaiah.
(v.) Hence, something unreal or imaginary; a creation of fancy.
(v. t.) To see in a vision; to dream.
Example Sentences:
(1) Clinical signs of disease developed as early as 15 days after transition to the experimental diets and included impaired vision, decreased response to external stimuli, and abnormal gait.
(2) A total of 104 evaluable patients 20-90 years old treated by direct vision internal urethrotomy a.m. Sachse for urethral strictures reported retrospectively via a questionnaire their sexual potency before and after internal urethrotomy.
(3) In the present study, 125 oesophageal biopsies obtained under direct vision at endoscopy from 22 patients with Barrett's oesophagus were systematically studied using fluorescence and peroxidase antiperoxidase single and double-staining immunocytochemical methods employing highly specific antibodies to localize the following peptide-containing cell types in Barrett's mucosa: gastrin, somatostatin, gastric inhibitory polypeptide, motilin, neurotensin and pancreatic glucagon.
(4) At this threshold there was no effect on reducing the rate of visual acuity overreferrals, but ten children with abnormal binocular vision were detected who were not referred by visual acuity criteria.
(5) DATA Modern football data analysis has its origins in a video-based system that used computer vision algorithms to automatically track players.
(6) Case 3 was that of a 70-year-old female with left impaired vision and frontal headache.
(7) While the correlations between speed and accuracy reversed over time, the abnormal vision group began and ended at the most extreme levels, having undergone a significantly more radical shift in this regard.
(8) Adaptation at 10 deg eccentricity yielded slightly higher threshold elevations than for central vision.
(9) The ceremony is the much-anticipated shop window for the Games, and Boyle was brought in to provide the creative vision.
(10) Acini in the parotid gland of the North American mink (Mustela vision) are composed of seromucous cells that contain secretory granules of peculiar morphology.
(11) Drones and helicopter strikes are not equipped with political night-vision.
(12) It is the combination of his company's pan-African and industrialist vision – reminiscent of the aspirations of African independence pioneers like Ghana's Kwame Nkrumah – and its relentless financial growth that has set Dangote apart.
(13) A 40 year old female presented with secondary glaucoma and loss of vision due to anterior pole metastasis of breast carcinoma.
(14) We present a patient with unilateral progressive painless loss of vision leading to optic atrophy and blindness.
(15) Proposed guidelines for future research include the use of conceptual rather than operational definitions of visual spatial ability, greater attention directed at separating spatial from nonspatial task components, and studies examining basic mechanisms underlying spatial vision.
(16) Repeated replacements of keratoprostheses extruded or removed because of complications were possible with restoration of the vision obtained after the first implantation.
(17) Whatever else Scott is about, Waverley ends with a vision of Britishness and a British union.
(18) The external and internal rear-view mirrors of automobiles should be positioned within the binocular field of vision.
(19) We address this issue directly over a 5-log10-unit range of light levels covering scotopic, mesopic, and photopic vision.
(20) Ocular disorders had been found in 62% of the cases, commonly represented by blindness of one eye, decreased vision, papillar edema and eventually by occlusion of the retineal artery.