A detached retina is a very serious problem that almost always causes blindness if it is not treated with surgery. The retina does not work when it comes off and the vision becomes blurry. The fluid can pass through a tear in the retina, lifting it from the back of the eye, similar to oil paint or wallpaper on a wall generating a detachment. Usually, the vitreous separates from the retina without causing problems, but sometimes the vitreous pulls too hard and breaks the retina in one or more places. These vitreous alterations may be secondary to: age, high myopia severe eye trauma or contusions, eye surgery, inflammatory processes. When this happens, you may notice something like flashing lights, streaks of light or having the sensation of 'seeing stars.' This is called 'flashes or photopsies.' These changes produce a liquid part inside the gelatin. As we get older, the vitreous can shrink and pull the retina. They can often be seen with greater intensity when looking at a flat bottom, such as a wall or the blue sky. The vitreous can undergo changes in its molecular structure, generating small groups of gel or cells inside it, casting shadows on the retina, and you can see small spots, spots, threads or clouds that move in your field of vision, called 'floaters'. The sticks work mainly in conditions of low light and provide black and white vision, the cones, however, are adapted to situations of high brightness and provide color vision. The human retina contains 6.5 million cones and 120 million rods. The only cells that are sensitive to light are cones and rods. It consists basically of several layers of neurons interconnected by synapses.

The light that hits the retina triggers a series of chemical and electrical phenomena that eventually result in nerve impulses that are sent to the brain through the optic nerve. It is similar to a canvas where the images are projected. The vertebrate retina is a thin and partially transparent layer, sensitive to light, located on the inner surface of the eye and is in contact with the inner side of the choroid (layer of blood vessels) and the vitreous humor (internal gelatin). Unidad de Servicios Externos y Consultoría.Comité de Ética de la investigación HGPS.International Training Center HGPS / AHA.Centro de Acceso Directo y Atención Priorizada.

Desprendimiento de retina