Humans and other animals have many phenotypic variations in eye color. The genetics of eye color are complicated, and color is determined by multiple genes. So far, as many as 15 genes have been associated with eye color inheritance. Some of the eye-color genes include OCA2 and HERC2.
Answers (2). green. There are many reasons accounting for the fact that your eyes go out of focus and it is quite normal in the daily life. The tiredness of eyes can result in your difficulty in focusing on object. A migraine headache, as said by the ophthalmologist, can also cause the eye go out of focus.
Amblyopia is caused when the brain favors one eye and refuses to use the other. Simply stated, amblyopia occurs when the brain blocks vision from one eye because it can't use the two eyes together. Because the eye is turned off, clear vision does not develop in the lazy eye.