Cladistics is a system of classifying organisms by their evolutionary histories. The organisms are grouped based on whether or not they share a particular characteristic with the group's most recent ancestor.Learn more at 23andme.com.n out-group is the organism in a cladogram that is the starting point and usually does not have any common characteristics with the other organisms in the cladogram.
What does this mean exactly? Astigmatism is a very common vision problem and one that should be discussed with your optometrist. It causes blurred vision at any distance when the irregular shaped cornea or lens prevents light from focusing properly on the retina at the back of the eye. The cornea and lens are primarily responsible for properly focusing light from entering your eyes to allow clear vision. The coordination of the eye movement depends on those eye muscles and nerves working together. A person's eye is naturally shaped like a sphere.
I also completely cured my astigmatism. The same eye exercise program can be used to treat farsightedness. According to Rebuild Your Vision, most vision disorders are caused by refractive errors, caused by bad vision habits and chronic eye strain.