Healthline says the purpose of the retina is to collect light focused from the lens. The retina transduces the light into neural signals and transmits those signals to the brain. The retina sends light information, such as that related to color and light intensity, to the brain via the optic nerve.Know More
Healthline states that the brain receives neural signals from the optic nerve and processes them. Without the retina, a person is blind. A condition called retinal detachment means the retina has moved. The brain is no longer able to receive neural inputs from the optic nerve, and essentially, a person is blind.
WebMD explains retinal detachment as a condition where the retina has somehow been detached from the connective tissue surrounding it. Symptoms of retinal detachment include random flashes of light in the eye, floaters and darkening of the peripheral vision. None of these symptoms are painful, but they need to be immediately evaluated by a doctor. If the condition is caught rapidly, surgery is performed and is usually able to save a person's eyesight.
WebMD also explains that retinal detachment is preventable by getting frequent eye exams, particularly if a person has a family history of the condition, diabetes or nearsightedness.Learn more in Biology
YAG laser surgery, also known as Nd:YAG laser posterior capsulotomy, is performed to correct the clouding on a lens after cataract surgery, says WebMD. In some cases the clouded lens can lead to more vision loss experienced from the original cataract several months or years after cataract surgery.Full Answer >
Steps taken during a common cataract removal procedure include making incisions in the eye, creating a circular opening on the lens, inserting a probe in the eye, breaking up the cataract and placing a lens implant in the eye, says WebMD. Phacoemulsification and extracapsular cataract extraction are the two types of procedures.Full Answer >
The purpose of mitosis is cell reproduction, regeneration and growth. Mitosis is cell division that occurs in the nucleus of a cell. The result of mitosis is the formation of two cells, called daughter cells, that are genetically identical to the original cell.Full Answer >
Photosynthesis is a process that allows plants to harvest energy in sunlight and store it chemically, by producing sugars. Sugars hold energy in their molecular bonds; when the plant breaks down these bonds, energy is released that the organism can then use. Although green plants are the most famous photosynthesizing organisms, some bacteria, algae and protists carry out the process as well.Full Answer >