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*  Adjustable-focus eyeglasses
1989 Mar;60(3):188-92 "Visual acuity and optical parameters in progressive-power lenses" Villegas EA, Artal P Optom Vis Sci. ... 2004 May;81(5):350-61 "Will visual discomfort among visual display unit (VDU)" Horgen G, Aarås A, Thoresen M. Optom Vis Sci. ... FAAO Investigative Ophthalmology and Visual Science. 2004;45:2122-2128.) Stepping Up to a New Level: Effects of Blurring Vision ...
*  Visual acuity
... visual acuity. Thus, "normal" visual acuity by no means implies normal vision. The reason visual acuity is very widely used is ... Bach M (2016). "The Freiburg Visual Acuity Test". Visual Functions Committee (25 May 1984). "Visual acuity measurement standard ... 1984 Visual Acuity of the Human Eye Visual Acuity Chapter from the Webvision reference, University of Utah The Freiburg Visual ... So, distant visual acuity of 6/10 and 6/8 with pinhole in the right eye will be: DscOD 6/20 PH 6/8. Distant visual acuity of ...
*  Macular edema
The second trial showed that patients treated with dexamethasone implants did not show improvements in visual acuity, compared ... "Ranibizumab for treating visual impairment caused by macular oedema secondary to retinal vein occlusion". NICE Guidance. NICE. ... DME is the most common cause of visual loss in both proliferative, and non-proliferative diabetic retinopathy. Macular edema ... showed that patients treated with triamcinolone acetonide were significantly more likely to show improvements in visual acuity ...
*  Cataract surgery
This creates a clear central visual axis for improving visual acuity. In very thick opacified posterior capsules, a surgical ( ... This may compromise visual acuity and the ophthalmologist can use a device to correct this situation. It can be safely and ... creating some visual disturbances. In the case of visual disturbances, the eye and brain often learn to compensate and ignore ... Many peoples' first symptoms are strong glare from lights and small light sources at night, along with reduced acuity at low ...
*  Retina Display
"Visual Acuity". Precision Vision. "Normal" visual acuity for healthy eyes is one or two lines better than 20/20. In population ... Always remember that the 20/20 reference standard does not refer to the average acuity of American eyes, just as the US ... That aperture, which can be measured by visual field tests, varies widely among different human subjects. In practice, thus far ... samples the average acuity does not drop to the 20/20 level until age 60 or 70. ...
*  MORM syndrome
"Visual Acuity". American Optometric Association. Retrieved 3 December 2015. Romero-Corral, Abel; Caples, Sean; Lopez-Jimenez, ... Individuals with MORM syndrome experience decreased visual acuity meaning their ability to see distinct sharp lines decreases. ... Any further reduction in vision acuity is not observed until the individual is between the ages thirty to forty. Delayed ...
*  Globe at Night
Gittings, Neil S.; Fozard, James L. "Age related changes in visual acuity". Experimental Gerontology. 21 (4-5): 423-433. doi: ... Westheimer, G (1 January 1965). "Visual Acuity". Annual Review of Psychology. 16 (1): 359-380. doi:10.1146/annurev.ps.16.020165 ... atmospheric aerosols such as dust or air pollution visual acuity of the observer wind (can cause stars to twinkle, and render ... Assuming normal visible acuity and clear skies, it is possible to approximately convert Globe at Night naked eye limiting ...
*  Binocular summation
Visual acuity. A practical measure of binocularity is the binocular summation ratio BSR, which is the ratio of binocular ... By combining the information received in each eye, binocular summation can improve visual acuity, contrast sensitivity, flicker ... Binocular summation refers to the improved visual performance of binocular vision compared to that of monocular vision. The ... Some of the ways in which binocular summation improves binocular visual performance are Brightness perception. The binocularly ...
*  Martial eagle
Their visual acuity may rival some eagles from the Aquila genus and some of the larger falcons as the greatest of all diurnal ... Fox, R., Lehmkuhle, S.W., & Westendorf, D.H. (1976). Falcon visual acuity. Science, 192(4236), 263-265. Chapin, J.P., & Lang, H ... Reymond, L. (1985). Spatial visual acuity of the eagle Aquila audax: a behavioural, optical and anatomical investigation. ... Martial eagles have been noted as remarkable for their extremely keen eyesight (3.0-3.6 times human acuity), partly due to ...
*  Falcon
Fox, R; Lehmkuhle, S.; Westendorf, D. (1976). "Falcon visual acuity". Science. 192 (4236): 263-65. doi:10.1126/science.1257767 ... the visual acuity of one species has been measured at 2.6 times that of a normal human. Peregrine falcons have been recorded ...
*  Nepafenac
... decreased visual acuity; seeing specks or spots; teary eyes; or eye discharge or crusting. On February 25, 2005, Alcon filed an ...
*  Ommatidium
ISBN 978-0-19-958114-6. Land, Michael F. (1997). "Visual Acuity in Insects". Annual Review of Entomology. 42: 147-77. doi: ... This visual arrangement is known as neural superposition. Since an image from the compound eye is created from the independent ... The advantage of this arrangement is that the same visual axis is sampled from a larger area of the eye, thereby increasing ... and each rhabdomere is united with those from the six adjacent ommatidia that share the same visual axis. Thus, at the level of ...
*  European mantis
Land, Michael F. (January 1997). "VISUAL ACUITY IN INSECTS". Annual Review of Entomology. 42 (1): 147-177. doi:10.1146/annurev. ... "The visual orientation strategies of Mantis religiosa and Empusa fasciata reflect differences in the structure of their visual ... The overlap of the visual field of the two eyes is 40° in nymphs and up to 70° in adult animals. The pseudopupil, a small dark ... The development of the visual system was reviewed by Karl Kral in 2014: while high contrast cues could be perceived by adults ...
*  Gerald Westheimer
Westheimer, G. (1975). Visual acuity and hyperacuity. Investigative Ophthalmolology, 14, 570-572. Gilbert, C., Ito, M., Kapadia ... M., & Westheimer, G. (2000 ). Interactions between attention, context and learning in primary visual cortex. Vision Research, ...
*  Retina
... such as visual acuities, contrast sensitivity, fundus auto-fluorescence (FAF), dark-adapted visual thresholds, vascular ... The resolution limit of the fovea has been determined at around 10,000 points.[clarification needed] See visual acuity. The ... The methods used varied among the three trials, but included both functional methods such as visual acuity and functional ... Despite occupying about 0.01% of the visual field (less than 2° of visual angle), about 10% of axons in the optic nerve are ...
*  Hyperacuity (scientific term)
Visual acuity is measured by the smallest letters that can be distinguished on a chart and is governed by the anatomical ... This defines the resolution limit and the basis of visual acuity. A quite different mechanism operates in hyperacuity, whose ... Westheimer, Gerald (1975). "Editorial: Visual acuity and hyperacuity". Investigative Ophthalmology. 14 (8): 570-2. PMID 1150397 ... misalignment of borders can be detected with a precision up to 10 times better than visual acuity. This hyperacuity, ...
*  Granular corneal dystrophy
Visual acuity is slightly reduced. Corneal transplant is not needed except in very severe and late cases. Light sensitivity may ...
*  Radial keratotomy
Primary visual factors: Quantitative: Decreased visual acuity (Myopia, Hyperopia, Astigmatism) Qualitative: Irregular ... After the glass was removed by this method and the cornea healed, Fyodorov found that the boy's visual acuity had improved ... Symons SP, Slomovic AR (August 1994). "Visual acuity, refractive and keratometric results of 140 consecutive radial keratotomy ... Visual acuity is generally improved. The healing corneal wounds consist of newly abutting corneal stroma, fibroblastic cells, ...
*  Preferential hyperacuity perimetry
Visual hyperacuity is at least 10-times more sensitive than Visual acuity, the ability to separate between distinct objects. ... PHP takes advantage of visual hyperacuity, also known as Vernier acuity-the ability to identify the misalignment of visual ... Westheimer G. (August 1975). ""Editorial: Visual acuity and hyperacuity"". Invest Ophthalmol. 14 (8): 570-572. PMID 1150397. ... Another problem is that minute visual aberrations can be normal and therefore should be distinguished from genuine visual ...
*  Spatial frequency
2 Visual Acuity, Contrast Sensitivity". University of Utah. Retrieved July 2009. Check date values in: ,access-date= (help). ... One degree on the visual field represents four cycles on the wave pattern. Fourier analysis Superlens Visual perception SPIE ... In the study of visual perception, sinusoidal gratings are frequently used to probe the capabilities of the visual system. In ... The spatial-frequency theory refers to the theory that the visual cortex operates on a code of spatial frequency, not on the ...
*  Eye
A horse has higher acuity through most of the visual field of its eyes than a human has, but does not match the high acuity of ... is then the measurement of visual acuity of the eye. For a human eye with excellent acuity, the maximum theoretical resolution ... Visual acuity, or resolving power, is "the ability to distinguish fine detail" and is the property of cone cells. It is often ... For example, the eye of a bird of prey has much greater visual acuity than a human eye, and in some cases can detect ...
*  Justo Gonzalo
Yonemitsu F., Sung Y., Naka K., Yamada Y. and Marmolejo-Ramos F. (2017). «Does weight lifting improve visual acuity? A ... Yonemitsu, F.; Sung, Y.; Naka, K.; Yamada, Y.; Marmolejo -Ramos, F. (2017). "Does weight lifting improve visual acuity? A ... The book was dedicated to the visual functions. As his author pointed out in the book, the human brain activity was thus ... Gonzalo-Fonrodona, I.; Porras, M.A. (2007). "Physiological Laws of Sensory Visual System in Relation to Scaling Power Laws in ...
*  Central serous retinopathy
However, some visual abnormalities can remain even if visual acuity is measured at 20/20, and lasting problems include ... Reduced visual acuity may persist after the fluid has disappeared. The disease is considered of unknown cause. It mostly ... Recovery of visual acuity usually follows. Treatment should be considered if resorption does not occur within 3-4 months, ... In a study noted by Acta Ophthalmologica also noted that the Spironolactone improved the visual acuity over the course of 8 ...
*  1861 in science
Franciscus Donders introduces the term visual acuity. Guillaume Duchenne describes Duchenne muscular dystrophy. Prosper Ménière ...
*  Guardinal
Avoral - Winged guardinal with unmatched visual acuity. Cervidal - Satyrlike guardinals that form the bulk of any guardinal ...
*  Planetarium
... high-end systems now offer a resolution that approaches the limit of human visual acuity. LCD projectors have fundamental ... Unable to pay for this himself, Stern became the head of the planetarium division of Viewlex, a mid-size audio-visual firm on ... For especially visual or spatially aware people, this experience can be more educationally beneficial than other demonstrations ...
*  Corneal dystrophy
Visual acuity is more or less normal. Lattice dystrophy starts as fine branching linear opacities in Bowman's layer in the ... Visual acuity eventually becomes reduced during the second and third decades of life following a progressive superficial haze ... generalized corneal edema and decreased visual acuity. In advanced cases, abnormalities are found in the all layers of the ... Some cause severe visual impairment, while a few cause no vision problems and are diagnosed during a specialized eye ...