Ahhh... eye(I) am very sad today.. :( i saw a very sad eye on the television today... it had contracted a disease known as the Retinitis Pigmentosa. here's the video. argh, another disease that might affect me!... oh wait! the superior brain tell me it's a genetic eye condition, passed down by the Human 's family. This means I won't ever get this disease! Phew.

But still, it breaks my heart (wait, do i have a heart?) cornea, to see a fellow eye with this illness. a person with this illness will have night blindness, slowly developing to tunnel vision, something like looking things through a tunnel. there are even some people who goes completely blind since childhood!

Retinitis Pigmentosa is caused by the genetic mutation of rhodopsin, that codes for the metazoan photoreceptor cells. It could also be caused by the breakdown of the function of rods and cones in the retina. the disease is usually caused by a large amount of disorders instead of just one.

to find out more about this disease, please view the video. it's very useful to learn more about things about other eyes! maybe I should start a charity for poor and sad eyes...
(written by Ling Evan)