Quote:
Originally Posted by peacegirl
We all know light travels at a finite rate of speed. This doesn't change anything because, if sight is efferent, the eyes are seeing the object due to the light that is present at the object, not the light that is present at the eyes. The range between the eye and object is not actual. In other words, the eye doesn't know that the moon is almost 250,000 miles away. The brain interprets the distance but the eyes see the moon the same way we a candle in the dark that is only a feet away. Let's drop it.
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In efferent sight the brain is looking out thru the eyes like windows, and it would seem that the light arriving at the eye passing through the lens and impinging on the retina has nothing to do with our ability to see. So the brain looking out thru the eyes preceves the object or person directly, and it occures to me that everyones vision should be clear. The ability of the lens to focus the light on the retina is only a condition that allows sight, but does not cause it, and the light is not carrying the image. Why then does it matter whether the light is accurately focused onto the retina or not, if it only needs to be present, and does not conduct or affect the image at all. The question now is why do problems with the eye that cause the lens to not focus the light onto the retina affect a persons vision. Optometry is well developed, as knowledge of vision, and how the eye works, so why would the lens, not properly focusing light on the retnia, have any effect on vision. If it is necessary for the lens to properly focus the light onto the retnia, then the only conclusion is that the lens is focusing an image onto the retina, and if that image not being clear, causes vision to not be clear, Then the eye is receiving an image through the arrival of light at the eye. Otherwise corrective lenses would have no effect on vision, if light does not carry that information. But we know that corrective lenses do improve the ability of some people to see clearly. Therefore light is the source of the image that is recieved and intrepreted by the brain. Efferent vision is utter fiction.