According to Healthline, the retina's function is to receive and convert light from the lens into neural signals that are interpreted by the brain. A thin layer of photoreceptor cells in the retina determines color and light intensity. The optic nerve serves as the conduit between the retina and brain.Know More
Although the retina processes visual information, the brain is ultimately responsible for deciphering and determining what the image is, according to Healthline. Damage to the retina can cause permanent blindness. Additionally, conditions where the retina is displaced, such as in retinal detachment, can also cause blindness.
WebMD warns that those who are extremely near sighted, previously have had an eye injury or who have a family history of retinal detachment are at most risk. Symptoms of a detached retina include flashes of light, floaters or darkening of peripheral vision. Yearly eye exams are recommended in order to detect early signs of this disorder.Learn more about Vision
The two main functions of the lens of the eye are to focus light onto the retina and to help the eye focus on objects at various distances. The lens of the eye is a rubbery, jellylike structure. It is located behind the cornea and is held in place by tendons that are attached to a set of muscles called ciliary muscles.Full Answer >
Rods and cones function as photoreceptors in the retina of the eye, turning visible light into neuronal signals, which are sent to the brain. This process is called transduction. Rods and cones perform at different wavelengths and sensitivities allowing detailed perception of light and color.Full Answer >
Eye floaters and flashes can be the result of the retina becoming detached from the inner back of the eye or the vitreous pulling away from the retina, says Marilyn Haddrill of All About Vision. Ordinary eye floaters that are no cause for alarm can also cause these symptoms.Full Answer >
Some people see blue spots as they age, as the collagen in their vitreous humor loosens, accumulates there and floats in front of the retina, causing visual disturbances, according to WebMD. In most cases, this condition is benign. However, there are instances when patients should speak to their doctor, such as when there is a sudden onset of new spots.Full Answer >