A colour blind person has difficulty in distinguishing colours that are on "confusion lines". For example, protanopes confuse blue-greens (and greys) with red (and browns). The deutranopes make mistakes with bl

There are three different types of wave sensitivity cones: long (red), medium (green), and short (blue). Short wave sensitivity (SWS) cones are most sensitive to a wavelength of approximately 419nm. When examining the absorbance curve, long and medium wave sensitivities are close together (30 nm shift), whereas the SWS cone curve is shifted more than 100 nm away S cones are much rarer than long and medium cones, accounting for approximately 5% of the total. When our vision depends on SWS cones alone, our spatial resolution is very poor.

Tritanopes have malfunctioning SWS cones. The problem occurs when there is a dominant inheritance of the G79R and S214P mutations this suggests that the abnormal gene products actively interfere with the viability or accuracy of blue-sensitive cone photoreceptors. It was further established that a G-to-A transition in

Some common words found in the essay are:
Colour Blindness, Coren Hakstain, G79R S214P, Studying Ishihara, colour blindness, sws cones, Screening Inventory, confuse yellow blue, ishihara charts, colour blind, confuse yellow, wave sensitivity, sensitivity cones, reds greens, yellow blue,
Approximate Word count = 582
Approximate Pages = 2 (250 words per page double spaced)