![]() ![]() Shows color preference for reds and yellowsįacial features on a doll, holes in a pegboard, geometric shapes Picks up or touches small objects with "raking" motion Notices small food objects at least 1 foot awayīrings objects to mouth, looks at them, then looks into space Looks at objects placed in hand (beginning eye-hand coordination) Looks at people (faces) and objects momentarily or longerĮyes follow a moving person or near objectĮyes move in the active inspection of the body, ![]() Pupils react identically to light changesīlinks at sudden light or object moving toward the face Educational assistance for the visually impaired and legally blind (this may include visual aids and special classes or schools).Medication for infections, allergies, glaucoma, and other conditions.Surgery for severe muscle imbalance, cataracts, or severe glaucoma.Prescription for glasses or contact lenses.Sees objects double Undue sensitivity to light.See blur when looking up from close work.Rubs eyes often, frowns, or loses place, especially when reading.Places head close to book or desk when reading or writing.Thrusts head forward or backward while looking at distant objects.Holds body rigid while looking at distant objects.Symptoms of vision difficulty may include: Appearance As a child grows older with this condition, it becomes extremely difficult to train the poorer eye to "see" within a normal range.Īlong with refractive errors and muscle balance problems, injuries and various other physical conditions such as cataracts, glaucoma, and detached retinas can create difficulty in seeing. This can develop into a condition known as AMBLYOPIA-where both eyes are healthy, but the brain uses only the information from the good eye and the other becomes "nonfunctional."Īmblyopia diminishes the person's ability to see binocularly, and it virtually reduces the vision to that of the one good eye. An adult may see two images or have double vision, but a child who is learning to use vision will begin to see only the better image. In a young child when there is a great difference between the images "seen" by each eye, binocular vision will not result. This is known as depth perception, an important factor for good mobility. When they work together to produce one image, this is called binocular vision.īinocular vision lets us judge the size and distance of an object from simple observation. Muscle balance problems, or crossed eyes, can prevent the two eyes from lining up to see the same thing. Refractive errors can create distortions. Relative sizes of objects seen with specific acuities are illustrated by these "E's": Relative size 20/20 is considered normal vision while 20/50 prohibits driving in Texas without special aids, 20/70 is called a visual handicap, and when a person sees 20/200 or worse in his or her better eye with the best possible correction on that eye, that person is considered to be "legally blind." A person can see with uncorrectable 20/200 vision, but often too little is recognized to be very helpful. Vision is most commonly described in terms of an acuity measure, or the best a person can see. Schools, television, and movies all use this knowledge effectively to present ideas to their audiences. Health Care Information Collection (THCIC)Įxperts agree that at least 80% of what a sighted person learns is through vision.National Electronic Disease Surveillance System (NEDSS).Emergency Medical Services (EMS) Licensure.Asbestos Hazard Emergency Response Act (AHERA).Food Manufacturers, Wholesalers, and Warehouses.Resources for Cancer Patients, Caregivers and Families.Cancer Resources for Health Professionals. ![]() Texas Comprehensive Cancer Control Program.Library and Information Science Program.Research, Funding, & Educational Resources.Center for Health Emergency Preparedness & Response.
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