There are many symptoms which are associated with this disorder. It includes the nystagmus, amblyopia, iris operating abnormalities and hemeralopia along with the achromatopia. There is a 6th syndrome associated with it which is hardly reported. The 3 dimensional aspect of the visual system is unnoticed in some sufferers. This syndrome is poorly described in the current medical texts. It became a common term after the Oliver Sacks in his book The Island of the Colorblind mentioned it. They were previously known as the achromats.
The patients with a lower degree of color perception were described as the protanopes, dueteranopes and tetartanopes. The achromaoplasia is also known as the rod monochromacy and there is a complete congenital color blindness. The individuals with the congenital form show a complete absence of cone cells activity. It occurs via electroretinography at the high light levels. The congenital disorder occurs due to many reasons. The possible reasons are cyclic nucleotide gated ion channel which are referred as ACHM2 OR ACHM3 and the cone photo receptor known as the transducin. The last factor is unknown.
This condition occurs among the children which are 6 months of the age and has a photophobic activity along with the nystagmus. The nystagmus becomes less noticeable as the age of the individual increases but the other symptoms become noticeable as the age increases. During the first 6 to 7 years the visual acuity and stability of the eye improves. The congenital forms of the disease are static and do not change with the time.
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