According to Helveston, the scotopic sensitivity syndrome and its treatment has, as a phenomenon, resulted in classic group behaviour and has the characteristics of a fad with a charismatic personality as a leader and the supporting evidence being mostly anecdotal.
42.
*I did find Scotopic sensitivity syndrome, which is a controversial " syndrome " and not apparently recognized widely, but which mentions " Text that appears to move ( rise, fall, swirl, shake, etc . ) " as a symptom.
43.
A 2009 report by The American Academy of Pediatrics ( AAP ) does not believe that there is conclusive scientific evidence for the use of coloured lenses ( one treatment used to relieve symptoms of Scotopic Sensitivity Syndrome ) although it does acknowledge anecdotal evidence to the contrary.
44.
In the human eye cone cells are nonfunctional in low light scotopic vision is produced exclusively through rod cells which are most sensitive to wavelengths of light around 498 nm ( green-blue ) and are insensitive to wavelengths longer than about 640 nm ( red ).
45.
"' Scotopic sensitivity syndrome "', also known as the "'Irlen Syndrome " ", is said to be a visual-perceptual defect related to difficulties with light source, glare, luminance, wavelength and black / white contrast.
46.
The Purkinje effect occurs at the transition between primary use of the scotopic ( rod-based ) systems, that is, in the mesopic state : as intensity dims, the rods take over, and before color disappears completely, it shifts towards the rods'top sensitivity.
47.
What the article abstract appears to say is that cats have cones similar to human S and M cones, but there's also evidence of a third cone type in between those ( peaking around 520 nm ), which was only active in dark ( scotopic ) conditions.
48.
The human eye uses scotopic vision under low-light conditions ( luminance level 10 " 6 to 10 " 3.5 cd / m?), and mesopic vision in intermediate conditions ( luminance level 10 " 3 to 10 0.5 cd / m?).
49.
I think it's important that the light be really dim in a totally dark area because you need for your eyes to be using scotopic vision where all of the color is washed out and things have a blue-ish tint . talk ) 02 : 21, 14 April 2009 ( UTC)
50.
The sensitivity of the dark-adapted human eye is greatest at about 507nm, a blue-green color, while the light-adapted eye is most sensitive about 555nm, a yellow-green; these are the peak locations of the rod and cone ( scotopic and photopic, respectively ) luminosity functions.
