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Human visual hardware is a result of a billion years

of evolution within the earths atmosphere where

light is scattered by molecules of air, moisture,

particular matter etc. However as we ascend into

our atmosphere with decrease density, light

distribution is changed resulting in our visual

hardware receiving visual data in different format.

Some Aspects to Consider: 1. Visual acuity is the

degree to which the details and contours of

objects are perceived. Visual acuity is usually

defined in terms of minimum separable.Large

variety of factors influence this complex

phenomenon which includes : # Optical factors-

state of the image forming mechanisms of the eye.

# Retinal factors such as the state of the cones. #

Stimulus factors such as illumination, brightness of

the stimulus, contrast between the stimulus and

background, length of time exposed to the

stimulus. * Minimum separable: shortest distance

by which two lines can be......

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Approximate Word Count: 898
Approximate Pages: 4 (250 words per double-spaced page)

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