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The retina lines the inside of the eye. It is light-sensitive and communicates visual messages to the brain. If the retina detaches, it moves and shifts from its normal position. This can cause photopsia, but can also cause permanent vision loss. Medical attention is needed to prevent vision loss.
[3] [6] This is an example of structural color, which depends on the lighting conditions, especially for lighter-colored eyes. The brightly colored eyes of many bird species result from the presence of other pigments, such as pteridines, purines, and carotenoids. [7] Humans and other animals have many phenotypic variations in eye color. [8]
Facial features include widely spaced eyes, light-colored eyes, low-set ears, a short neck, and a small lower jaw. [1] Heart problems may include pulmonary valve stenosis. [1] The breast bone may either protrude or be sunken, while the spine may be abnormally curved. [1] Intelligence is often normal. [1] Complications of NS can include leukemia ...
According to researchers at Pittsburgh University, women with lighter colored eyes experience less pain during childbirth compared to women with darker eyes. People with lighter eyes also consume ...
Cyanopsia primarily affects the retina, the light-sensitive layer at the back of the eye, and sometimes the optic nerve, which transmits visual signals to the brain. The retina contains specialized cells called photoreceptors, which are responsible for detecting light and color. In cyanopsia, these photoreceptors, particularly the ones ...
When the test is performed in an eye with an afferent pupillary defect, light directed in the affected eye will cause only mild constriction of both pupils (due to decreased response to light from the afferent defect), while light in the unaffected eye will cause a normal constriction of both pupils (due to an intact efferent path, and an ...
If the hyphema is large enough, it will also be visible on a penlight exam. Symptoms include bleeding in the front of the eye, sensitivity to light, pain in the eye, and blurry, clouded, or blocked vision. [14] Vitreous hemorrhage may be diagnosed when symptoms such as floaters, haziness, perception of shadows, or cobwebs are present. It is ...
The moderate melanin content in hazel eyes allows for some scattering of light within the iris, resulting in its beautiful color spectrum. Hazel eyes also vary in their color combinations.