Welcome to ⚕️ @nurseneed ⚕️ Strabismus is a visual problem in which the eyes are not aligned properly and point in different directions. One eye may look straight ahead, while the other eye turns inward, outward, upward, or downward. The eye turn may be consistent, or it may come and go. Which eye is straight (and which is misaligned) may switch or alternate. Strabismus is a common condition among children. About 4 percent of all children in the United States have strabismus. It can also occur later in life. It may run in families; however, many people with strabismus have no relatives with the problem. Six eye muscles, controlling eye movement, are attached to the outside of each eye. In each eye, one muscle moves in the eye to the right, and one muscle moves the eye to the left. The other four muscles move it up or down and at an angle.
If one of those muscles grows weak, the stronger muscle will pull the eye the opposite way. As a result, your eyes can end up looking in different directions. Strokes and nerve damage can also cause this problem. Because the stronger muscle in the eye is always contracting, it can become permanently tight. So when ophthalmologists treat strabismus with botulinum toxin, they inject the drug into the stronger muscle to relax it.
With normal vision, both eyes aim at the same spot. The brain then combines the two pictures into a single, three-dimensional image. This three-dimensional image gives us depth perception.
When one eye is out of alignment, two different pictures are sent to the brain. In a young child, the brain learns to ignore the image of the misaligned eye and sees only the image from the straight or better-seeing eye. However, the child loses depth perception.
Adults who develop strabismus often have double vision because their brains have already learned to receive images from both eyes and cannot ignore the image from the turned eye. A child generally does not see double. #nurseneed is an online learning place about needs of all #nurses . its helps for all #rn #BSN #lpn #nursingschool ' s #nursingstudent . - 1 hour ago