If only one eye is affected, you may not notice any changes in your vision because your good eye may compensate for the weak eye. And the condition doesn't affect side (peripheral) vision, so it rarely causes total blindness. Dry macular degeneration is one of two types of age-related macular degeneration. It can progress to wet (neovascular) macular degeneration, which is characterized by blood vessels that grow under the retina and leak. The dry type is more common, but it usually progresses slowly (over years).…
Once a computer users vision begins to deteriorate it is incurable, as it is a progressive disease, and causes significant vision loss in the central field of vision but does not affect the user’s peripheral vision (“What is Macular”, par.…
The eyes include the receptors for vision, which is generated in the retina. Processing pathways of eyes are like a camera, and what difference is people generate information on their sensitive retina, not camera films. Retina has lots of cells that cover the inside back of the eye. The image leaves on eyes by optic nerve; Cornea is responsible for focusing light to be processed; Fovea is the center of macula to sharpen our vision views for focusing; Iris regulates the amount of light, which along with the pupil; Lens focuses on light rays. Visual pigments have rods and cones,…
Cranial nerve I (Olfactory) is the sensory nerve of smell. Cranial nerve II (Optic) is the sensory nerve that carries vision to the brain. Cranial nerve III (Oculomotor) is responsible for pupil size and certain movements of the eye. Cranial nerve IV (Trochlear) is also related to movement of the eyes.…
DISCUSSION The aim of this investigation was to see whether exercising the Vestibulo Ocular Reflex increases and improves balance throughout all ages. From the results it is clear to see that majority of the test subjects improved after doing the VOR exercise. The results showed that 9 out of 60 people decreased and the rest of the participants tested increased. A large amount of 85% applicants increase in time after stimulating the Vestibulo Ocular Reflex.…
Effects could also result in a scotoma and can result in the disease Retinopathy, which also affects the retina. Some effects can be…
(Webmd, 2016). Retinal detachment can be caused by more than one thing. There can be a loss of integrity in the retina,…
The sudden presentation may involve severe eye pain, blurred vision, mid-dilated pupil, redness of the eye, and nausea. Vision loss from glaucoma, once it has occurred, is permanent. Risk factor for glaucoma include increased pressure in the eye, a family history of the condition, migraines, high blood pressure, and obesity.…
Glaucoma is a common eye condition in which the fluid pressure inside the eye rises to a level higher than healthy eye. If untreated, it may damage the optic nerve, causing the loss of vision or even blindness. The body system directly affected is the nervous system. Glaucoma directly attacks the eyes, which are responsible for viewing the world and then transmitting this information to the brain. This affects the body to make an expected response.…
Unfortunately it causes scarring of the retinas. Wet macular degeneration is divided into two categories, occult and classic. Occult is when new blood vessels that start to form they are not as pronounce and cause little leakage, and is know as occult CNV. Classic is when the new blood vessels begin to start tearing and scraping the wall of the retina, which causes more severe vision…
Diabetes is a destructive disease, especially when it is undiagnosed, untreated, or unmanaged. Vision loss and blindness can happen if a diabetic does not take action to keep glucose levels under control. Understanding how diabetes affect the retina is critical for diabetics. The Damage that Diabetes Does After developing diabetes, the body loses its ability to regulate glucose levels in the blood stream.…
Congenital optic nerve hypoplasia (ONH) is a condition in which one or both optic nerves are not fully developed, giving the appearance of abnormally small, pale optic nerve heads upon fundus examination (AAPOS, n.d.). In comparison to the size of the disc, the retinal blood vessels appear larger than normal, when in actuality the vasculature is of normal caliber (Kaur et al, 2013). This non-progressive developmental abnormality is typically characterized by a combination of neurological, behavioral, endocrine, and visual impairments without predilection for a particular sex, race, or socio-economic status (Kaur et al; Johnson, 2005). The prevalence of ONH in infants with severe vision loss, including blindness, is approximately 15-25 percent…
As said in the web article, “age-related macular degeneration,” most of the patients with dry macular generation will slowly start to lose vision going from one eye to the next. Unlike dry, wet macular degeneration patient’s eyesight will go rapidly and more severely. Both wet and dry patients will suffer no pain ("macular…
One of the main leading cause of blindness in the world is glaucoma with estimation over four million victims in America (4). It also spreads in the Middle East, North Africa, India, and South East Asia (5). In fact, studies have found that Asian Americans are at a higher risk of all glaucoma’s type especially primary open angle glaucoma (4). Generally, it infects elderly people. However, African Americans can usually develop glaucoma at a young…
Optic Neuritis is a condition where the optic nerve, which carries visual information from the eye to the brain, becomes inflamed. Most of the damage is done to the protective myelin sheath that surrounds the nerve, which is vital for good vision. A few symptoms that occur to people who have Optic Neuritis are: distorted color vision, blurriness, pain, and even vision loss. During a routine eye exam, a doctor will look for signs of Optic Neuritis by checking the eye pressure. The eye will be measured and the pupils will be dilated in order to get a better view of each of the eye’s individual interior structures.…