What's the difference between acuity and sharpness?

Acuity


Definition:

  • (n.) Sharpness or acuteness, as of a needle, wit, etc.

Example Sentences:

  • (1) The high incidence of infant astigmatism has implications for critical periods in human visual development and for infant acuity.
  • (2) We have now started a prospective follow-up study in order to pursue the development of (a) p-ERG amplitudes and (b) funduscopic changes and visual acuity in these patients.
  • (3) 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.
  • (4) Degraded visual acuity had a significant effect on cadence, foot placement, and foot clearance, but visual surround conditions did not.
  • (5) On the initial visit, the best corrected acuity with spectacles was determined and a potential acuity meter reading was obtained; this test suggested potential for visual recovery in two of the three patients.
  • (6) Visual acuity was improved in 77%, was worse in 13%, and unchanged in 10% of eyes.
  • (7) The contra-indications for them are: 1. a better visual acuity with spectacles than with contact lenses, 2. advanced cases (4th degree of Amsler) whose fitting is impossible, 3. unilateral keratoconus, 4. associated diseases such as trachomatous pannus, allergic kerato-conjunctivitis.
  • (8) Near acuity with distance correction was J2 or more in 93.1% of the bifocals and in 17.4% of the monofocals (without correction: 79.3% and 41.4%, respectively).
  • (9) A visual acuity of 0.05 or better was achieved in 36% of the eyes treated with silicone oil versus 67% of the eyes treated with gas tamponade.
  • (10) No complications occurred, and visual acuity was good.
  • (11) Myopia ranged from -1.0 D to -9.0 D. Forty-two eyes (53%) achieved uncorrected visual acuity (VA) of 1.0 or better and 73 eyes (92%) better than 0.5.
  • (12) In remote terms (after four months) further improvement of visual functions was recorded, visual acuity increased by 0.3-0.6 in 8 of 15 patients.
  • (13) We examined 84 eyes with different lens opacities, the visual acuity was analysed in relation to the axial, cortical and capsular cataract.
  • (14) If there is any advantage to a particular strategy for selecting the distance monovision eye, it must be realized in vision performance areas other than visual acuity.
  • (15) 9 of the injured eyes had a reduction of visual acuity to 0.5 or less as a consequence of lens or central fundus changings.
  • (16) Our experiments try to verify the possibility of assessing visual acuity in children under Ethrane anesthesia.
  • (17) The final visual acuity was 0.4 or better in 83.3% of the eyes with transient CME.
  • (18) Postoperatively, visual acuity was improved and symptoms of erosion decreased in both patients.
  • (19) Acuity for the direction of drift for these stimuli is of the same order of precision as orientation acuity for static or drifting gratings, and exhibits a meridional anisotropy that favours the principal meridians.
  • (20) The CNVMs were treated in four patients; final visual acuity was poor in all eight patients.

Sharpness


Definition:

  • (n.) The quality or condition of being sharp; keenness; acuteness.

Example Sentences:

  • (1) Basal 20 alpha DHP levels remained low until a sharp rise at mid pro-oestrus.
  • (2) Whole-virus vaccines prepared by Merck Sharp and Dohme (West Point, Pa.) and Merrell-National Laboratories (Cincinnati, Ohio) and subunit vaccines prepared by Parke, Davis and Company (Detroit, Mich.) and Wyeth Laboratories (Philadelphia, Pa.) were given intramuscularly in concentrations of 800, 400, or 200 chick cell-agglutinating units per dose.
  • (3) Gonadectomy of females was accompanied by changes in the activity of individual HAS links in different direction--some reduction of ACTH in the hypophysis, a sharp and significant fall of the peripheral blood glucocorticoid level and a marked significant elevation of hydrococortisone production in the adrenal cortex in vitro.
  • (4) The University of the Arts London and Sunderland, Sheffield Hallam, Manchester Met and Leeds Met university have also experienced sharp declines in applications.
  • (5) A sharp decrease in oxygen uptake occurred in Neurospora crassa cells that were transferred from 30 degrees C to 45 degrees C, and the respiration that resumed later at 45 degrees C was cyanide-insensitive.
  • (6) In contrast to findings in the rat and dog, no sharp drop but a gradual fall in CLi was observed at decreasing FENa values down to 0.02%.
  • (7) A more specific differentiation, as indicated by the sharp increase in GAD levels which was concurrent with an increase in interneuronal contacts, lagged behind the initial growth.
  • (8) It appears that the decline in plasma IGF-I lags considerably behind the sharp fall in plasma GH levels and expression of hepatic IGF-I mRNA.
  • (9) Supplementation of Mg resulted in a sharp increase in serum PTH level with a rapid disappearance of the dissociation between the two immunoassays of PTH.
  • (10) A.CA animals were extremely susceptible, showing a sharp and sustained increase in parasitemia starting on day 12, followed by death no later than day 15 post-inoculation.
  • (11) There was a sharp transition with actin nearly saturated with S1: when the S1 to actin ratio was low, the kinetics were fast (K1 greater than 300 microM, k2 greater than 40 s-1); when it was high, they were slow (K1 = 14 microM, k2 = 2 s-1).
  • (12) Low calcium causes an increase in optimum frequency, a decrease in current threshold, and an increase in sharpness of tuning in both real axons and axons computed according to the Hodgkin-Huxley formulation; high calcium causes opposite effects.
  • (13) The Tea Party movement has turned climate denial into a litmus test of conservative credentials – and that has made climate change one of the most sharp divisions between Obama and Romney.
  • (14) The presence in lamprey kidney of a loop which is similar to Henle's loop in mammals and birds indicates that the development of the system of osmotic concentration conditioned by the formation in the kidney of the medulla and from a sharp increase in renal arterial blood supply.
  • (15) There is no longer a sharp dividing line between working and rentiering.
  • (16) We are going to see a sharp fall unless sellers hold the sector up by making aggressive offers.
  • (17) A sharp increase in the intensity of lipids biochemiluminiscence and decrease in the tissue homogenates biochemiluminiscence were observed during the period of progressive tumour growth on the 6-8 days following introduction of the virus.
  • (18) By no means is this a new theme, but it has taken on an added sharpness and urgency after the conferences.
  • (19) The blood lymphocytes were small with scanty cytoplasm, densely condensed nuclear chromatin, and deep clefts originating in sharp angles from the nuclear surface.
  • (20) In sharp contrast, the coverage provided by the various mainstream news channels and newspapers not only seems – with some exceptions – unresponsive and stilted, but often non-existent.