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Snellen chart
Natasha Sporer
Wiki User
∙ 14y agoVisibility is traditionally measured by the use of large high contrast targets (in daylight), at whatever range they can no longer be seen clearly or start to fade out - that was considered the visible limit and recorded as a distance. For example fog will make the targets over 3,300ft completely invisible.
Modern methods use a laser sent from one transmissometer to another - the drop off in energy received is then calculated and a reading obtained. Measurements are expressed in feet/metres and as a climate condition such as;
ZERO 330ft or less
FOG 3300ft or less
Wiki User
∙ 13y agoVision is normally measured using a Snellen chart
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What is visual basic control?
Visual Basic Controls work on Visual Studio for Visual Basic and Applications that made by Visual Basic.
How many languages are supported by visual studio?
Visual studio 2010 supports 5 programming languages. These are Visual Basic, Visual C#, Visual C++, Visual F# and JScript.
What is visual perimetry?
what is visual perimetry?
What is visual library?
What is visual labrary
The year of invention of visual basic?
Visual Basic was started in 1991.
Is there a scale for visual acuity?
the scale of the visual acuity is snelle chat
What is visual acuity?
The ability to see clearly is called visual acuity
What is considered as the normal or ideal visual acuity?
6/6. Six by six is normal visual acuity.
What is the visual ability to see fine details?
Visual acuity refers to the ability to see fine details. It is typically measured by the clarity or sharpness of vision, often tested using an eye chart where individuals identify letters or symbols of varying sizes at a set distance. This measurement helps determine the smallest level of detail that can be resolved by the visual system.
Need a sentence using acuity?
A cyclist needs good visual acuity
What is a sentence that includes the word acuity?
with oldage ones visual acuity is impared
What is another name for sharpness of vision?
Sharpness of vision is also called visual acuity.-Visual acuity is determined by the ability to see visual details (in normal light).
What is static visual acuity?
static visual acuity is the ability to see clearly and a non moving position and looking at a non moving object.
A specialist in measuring visual acuity?
optometrist
What does visual acuity mean?
The term visual acuity means to have a sharpness of vision by measuring their ability to read letters from a distance. Optometrists do this when testing someone for glasses.
What is the prognosis for central retinal visual acuity?
The prognosis for central retinal visual acuity is poor with only about one-third of patients recovering useful vision.
What structures play a major role in visual acuity?
The structures that play a major role in visual acuity are -macula -fovea centralis ..and possibly -optic disc
