![]() A cranial nerve palsy can be congenital, traumatic, or due to blood vessel disease (hypertension, diabetes, strokes, aneurysms, etc.). A cranial nerve palsy may cause a complete or partial weakness or paralysis of the areas served by the affected nerve. A palsy is a lack of function of a nerve. There are 12 pairs of cranial nerves and some are involved with the eyes. Symptoms will be worsened by illness, lack of sleep, anxiety, and/or prolonged close work.Ĭranial nerves are nerves that lead directly from the brain to parts of our head, face, and trunk. It is not unusual for a person with convergence insufficiency to cover or close one eye while reading to relieve the blurring or double vision. 4 CI is often associated with a variety of symptoms, including eyestrain, headaches, blurred vision, double vision, sleepiness, difficulty concentrating, movement of print while reading, and loss of comprehension after short periods of reading or performing close activities. 3 Recent studies have linked convergence insufficiency to correct identification of athletes with concussions. New strabismus that develops in an adult can result from conditions such as thyroid eye disease, stroke or tumors, but often there is no identifiable cause.Ĭonvergence insufficiency (CI) is a common binocular vision disorder affecting approximately five percent of the population in the United States. Strabismus usually develops in infants and young children, most often by age three. Adults may have strabismus either from a residual childhood strabismus or they may acquire strabismus in adulthood. It usually occurs in people who have poor eye muscle control or are very farsighted. Strabismus (often referred to as “crossed eyes”) is a binocular vision disorder in which both eyes do not look at the same place at the same time. This puts heavy strain on the eye muscles as they are constantly trying to correct the alignment to achieve single focus vision. Binocular Vision Dysfunction is a condition in which the two eyes are unable to align properly. 2īinocular Vision is the ability to maintain visual focus on an object with both eyes, creating a single visual image. 1Īccommodative dysfunction can cause blurred vision, difficulty with concentration and attention, visual discomfort, eye strain, headaches, reduced efficiency and productivity, fatigue, and other symptoms. Brain injury as a result of moderate head trauma may result in the development of myopia (nearsightedness) and significant accommodative dysfunction for individuals who previously had no history of myopia prior to the head trauma. ![]() If there is a problem in how easily or quickly our eyes focus, that visual problem is called an accommodative dysfunction. When we look far away, up close, and back again, our eyes change focus rapidly to allow us to see things clearly at all distances. Our eyes have an automatic focusing system which adjusts the lens inside our eye in order to see clearly at all distances. You can check out our Common Vision Problems & Symptoms Following a Brain Injury page for more information and search Find a Provider page to find a doctor in your area. However, for individuals of all ages who may have visual deficits as a direct result of physical disabilities, traumatic brain injuries, and other neurological insults and/or diseases, a referral to a Neuro-Optometric Rehabilitation Optometrist, a doctor who has special expertise in the assessment and treatment of visual disturbances associated with damage to the central nervous system, may be advised.Ī Neuro-Optometric Rehabilitation Optometrist will examine not only the visual issues, but also other subtle factors involved in the complex visual process, such as posture, spatial awareness, visual memory, and motor output - all areas that can have wide-ranging effects on daily activities and on quality of life.īelow is a listing of just some of the conditions treated by a Neuro-Optometric Rehabilitation Optometrist. During a comprehensive eye exam, your eye doctor will not only determine your prescription for eyeglasses or contact lenses but will also check your eyes for common eye diseases, assess how your eyes work together as a team, and evaluate your eyes as an indicator of your overall health. ![]()
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