October 10, 2019 is World Sight Day, created to raise awareness for blindness and vision impairment. Causes of blindness vary by person but some causes include infection, inability to obtain glasses and traumatic injuries. Often when people are in an accident suffering a blow to the head, they may experience loss of vision and further develop vision problems. Vision problems come in different forms, including retinal detachment, vitreous hemorrhage and optic nerve damage.
Retinal Detachment
The retina is a small layer of tissue behind the eye providing signals to the brain through the optic nerve. The signals help the brain understand images entering the eye. Retinal detachment occurs when the retina comes loose from the eye and impairs the signals traveling to the optic nerve. The retina also has cells that provide oxygen to the eyes. When not treated, the eye can bleed into the retina and cause permanent vision loss.
Vitreous Hemorrhage
The vitreous is a gel-like substance in the eye accounting for 80% of the volume. The substance fills the eye, making it round. The vitreous is held to the optic nerve and retina by tiny fibers securing it in place. The fibers can degrade over time and cause the substance to become unstable. An injury to the head can cause blood vessels in the eyes to bleed into the vitreous, causing blurry vision. Most of the time, these issues clear up over time but when not treated, can cause permanent damage.
Optic Nerve Damage
The optic nerves carry visual messages from the eyes to the brain. With a head injury, pressure on the optic nerve increases and causes blood circulation to be cut off. The decrease in blood circulation can cause complete vision loss.
Many people hit their heads or suffer cervical strain in car accidents, causing blurry vision or sudden headaches. If symptoms continue after an accident, speak to your doctor and get treatment. Do not ignore vision issues, they may be a sign of something more going on with your body.
The Merdes Law Office has been helping Alaskans for more than 30 years. And while we hope you never need us… We’re here if you do.
