Re: Actual Image as Projected onto the Retina

Dieter Michel wrote:
Hi Nige,

I am sure that at some stage during my high school science education I
saw a picture rendered as it is actually projected onto the retina. I
seem to remember a relatively small circle of decent quality with most
of the image almost useless.


Indeed, there's only a very small area on the retina that picks
up a reletively decent picture and the eye together with complex
algorithms in your brain quickly scan a scene - also based on
pre-knowledge of objects in this scene (you see what you know) -
and then takes these puzzle pieces and creates a scene perception
that corresponds with the sensual impressions of your other senses.
Perceptions of the quick eye movements during the scanning process
mentioned above are removed as well as other perceptual discrepancies
that may be present when trying to fusion different sensual perceptions.

Dieter Michel

My retinologist was just recently explaining that to me.
As I recall, the macula accounts for no more than 10% of the visual field, and the fovea for something like half or less of the macula.
From the other point of view, foveal vision accounts for something like 90% of the useful vision, with maybe 5% in the rest of the macula, and the remaining 5% over the remaining 90% of the retina...

Dave
.