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.
Orbicularis oculi Impairment. Temporary dysfunction of the cranial nerve, called Bellâs palsy can cause inability to close or blink the eyes due to an impaired muscle. Lack of nutrient supply to the facial muscle increases the risk of corneal inflammation and ulcers.