(a.) Of or pertaining to the eye; ocular; as, the optic nerves (the first pair of cranial nerves) which are distributed to the retina. See Illust. of Brain, and Eye.
(a.) Relating to the science of optics; as, optical works.
Example Sentences:
(1) Following central retinal artery ligation, infarction of the retinal ganglion cells was reflected by a 97 per cent reduction in the radioactively labeled protein within the optic nerve.
(2) This study examined both the effect of variations in optical fiber tip and in light wavelength on laser-induced hyperthermia in rat brain.
(3) The number of axons displaying peptide-like immunoreactivity within the optic nerve, retinal or cerebral to the crush, and within the optic chiasm gradually decreased after 2-3 months.
(4) Once the normal variations are mastered, appreciation of retinal, choroidal, optic nerve, and vitreal abnormalities is possible.
(5) Chromatolysis and swelling of the cell bodies of cut axons are more prolonged than after optic nerve section and resolve in more central regions of retina first.
(6) CW Nd:YAG light transmitted by fiber optic cable and sapphire crystal was applied transsclerally to the ciliary body of pigmented and albino rabbits.
(7) Unlike results seen in the goldfish optic nerve, injury to the rat optic nerve induced no observable increase in laminin content or change in its distribution.
(8) This is the first report of anterior ischemic optic neuropathy as a result of hemodialysis-associated hypotension.
(9) It is shown that, by comparison of a reacting mixture at chemical equilibrium with a non-reacting but equally composed one, the sum of the mean concentrations of the reaction products can immediately be taken from optical absorption or from interferometric measurements.
(10) A television camera scans the spread through microscope optics; computer and special purpose electronics process the video signals to generate run length histograms.
(11) The purity and configuration of each isomer of the free acid and N-chloroacetylated derivative were ascertained by: (a) paper chromatography in five solvent systems, (b) elemental analysis, (c) Van Slyke nitrous acid determination of alpha-carbonyl carbon, and (d) Van Slyke ninhydrin determination of alpha-carbonyl carbon, and (e) optical rotation.
(12) The optical and oxygen binding properties of the reconstituted myoglobins containing two isomeric monoformyl-monovinylhemins were found to be different.
(13) These images were previously determined by using a recently developed hybrid optical-digital method.
(14) The development of optical fibers capable of transmitting laser energy has encouraged the experimental use of laser irradiation for the treatment of acquired cardiovascular disorders.
(15) This technique is sensitive to the optical anisotropy within the muscle, including that due to intrinsic properties of the protein molecules as well as that due to the regular arrangement of proteins in the surrounding medium.
(16) Patients should be evaluated by perimetry using an appropriate strategy and contrast sensitivity testing, along with careful examination of the optic discs.
(17) Thus, during treatment with ethambutol visually (pattern) evoked potentials may reveal a surprisingly high percentage of subclinical optic neuritis.
(18) The optical efficiencies are similar and depend on the match of the excitation characteristics of the stain with the emission spectra of the light source.
(19) Morphological results demonstrated that 30 Gy irradiated animals showed extensive necrosis primarily in the fimbria, which extended into the internal capsule, optic nerve, hippocampus, and thalamus.
(20) A compact attachment for microscope-type instruments is described enabling to introduce, rapidly and qualitatively, minute biological speciments into melted embedding medium and ensuring the safety of optics.
Sight
Definition:
(v. t.) The act of seeing; perception of objects by the eye; view; as, to gain sight of land.
(v. t.) The power of seeing; the faculty of vision, or of perceiving objects by the instrumentality of the eyes.
(v. t.) The state of admitting unobstructed vision; visibility; open view; region which the eye at one time surveys; space through which the power of vision extends; as, an object within sight.
(v. t.) A spectacle; a view; a show; something worth seeing.
(v. t.) The instrument of seeing; the eye.
(v. t.) Inspection; examination; as, a letter intended for the sight of only one person.
(v. t.) Mental view; opinion; judgment; as, in their sight it was harmless.
(v. t.) A small aperture through which objects are to be seen, and by which their direction is settled or ascertained; as, the sight of a quadrant.
(v. t.) A small piece of metal, fixed or movable, on the breech, muzzle, center, or trunnion of a gun, or on the breech and the muzzle of a rifle, pistol, etc., by means of which the eye is guided in aiming.
(v. t.) In a drawing, picture, etc., that part of the surface, as of paper or canvas, which is within the frame or the border or margin. In a frame or the like, the open space, the opening.
(v. t.) A great number, quantity, or sum; as, a sight of money.
(v. t.) To get sight of; to see; as, to sight land; to sight a wreck.
(v. t.) To look at through a sight; to see accurately; as, to sight an object, as a star.
(v. t.) To apply sights to; to adjust the sights of; also, to give the proper elevation and direction to by means of a sight; as, to sight a rifle or a cannon.
(v. i.) To take aim by a sight.
Example Sentences:
(1) In a new venture, BDJ Study Tours will offer a separate itinerary for partners on the Study Safari so whilst the business of dentistry gets under way they can explore additional sights in this fascinating country.
(2) Wimbledon said the world No1 Williams had been suffering from a viral illness and it was a sad and bizarre end to the American’s tournament, not to mention a worrying sight, seeing her hardly able to play.
(3) In the midst of all the newspaper headlines and vigils you can sometimes lose sight of the man who was on death row.
(4) Facebook Twitter Pinterest Imogen and her father, John Hull, before he lost his sight.
(5) Their physical condition and performance was found to be comparable with that of normal sighted children.
(6) "At first sight, today's announcement of an independent commissioner is a missed opportunity to strengthen our co-ordinated approach to addressing these very serious matters.
(7) He saw a soldier aim his weapon’s laser sight at the al-Atrashes’ Volkswagen “like he was preparing to shoot”.
(8) Many Iranian women are already pushing the boundaries , and observers in Tehran say women who drive with their headscarves resting on their shoulders are becoming a familiar sight.
(9) The home fans were lifted by the sight of Billy Bonds, a legend in these parts, being presented with a lifetime achievement award before the kick-off and the former West Ham captain and manager probably would have enjoyed playing in Allardyce's combative midfield.
(10) This results from a lack of knowledge of what could be done to conserve sight, the irreversible nature of many eye diseases, the distances involved in travelling to the clinic, and even a lack of knowledge of its existence.
(11) However, this operation may not be as sight effective as many believe.
(12) The results of excimer laser photorefractive keratectomy (PRK) in 16 blind and 120 sighted eyes (136 patients) are presented.
(13) It is now a well-known fact that the human body is able to use luminous stimulation for aims other than sight; the pineal gland, though no longer directly sensitive to light as in lower animals, is nevertheless the fulcrum of a complex neuro-endocrine system which makes an interaction between light and the human body possible by means of the production of a number of substances of which melatonin is the most widely investigated.
(14) Senior government sources have confirmed the budget razor gang has the fuel tax credit (formerly known as the diesel fuel rebate) “firmly in its sights” – a scheme that rebates miners and farmers and others for the off-road use of diesel.
(15) The National Society to Prevent Blindness, formed in 1908, is the oldest voluntary agency with the singular mission to preserve sight and prevent blindness through a broad program of public and professional education, industrial and community services, and research.
(16) Inside the Islamic State ‘capital’: no end in sight to its grim rule Read more The Kurdish People’s Protection Units (YPG) militia and an alliance of rebels known as the “Euphrates Volcano” – backed US-led coalition air strikes – have seized swaths of territory from Isis, including the strategic border town of Tal Abyad .
(17) When vertically divergent eye movements occur, both eyes also systematically rotate in parallel around their lines of sight (conjugate cyclotorsion).
(18) The Greek finance ministry's financial crimes unit conducted the raids, and says it has many other groups in its sights.
(19) The incumbent mayor has set his sights on stronger powers over the London economy as he seeks re-election for a second term on 3 May.
(20) The classical age-related problems of poor hearing, poor sight and difficulty in chewing were also prevalent among these elderly.