Some eye diseases, in the absence of a diagnosis and appropriate treatment, can cause mild to severe blindness. In this article, Bramardianto.com writes about various leading cause of blindness, and how this situation can be handled.Eye Disease, Eye ProblemsThe ability to see the world around us in all its beauty is a gift that we should all cherish. However, certain illnesses can deter us from this gift, and this
article talks about the most common eye problems, and the most deadly.
Before we talk about blindness and its causes, let's understand a little about how our vision works, and how it helps us to see things. When we look at an object, the light rays from the object into the eye through the iris, and reaches the lens through the cornea. Beam is refracted through the cornea and lens, and refracted rays pass through the vitreous humor to reach the retina, where they form an inverted image objects. The retina is the light-sensitive tissue lining the inner surface of each eye, and is connected to the brain via the optic nerve. The object image is then transferred to the visual cortex of the brain via the optic nerve, and then we were able to 'see' objects.
Common Eye Diseases That Cause BlindnessThe damage that occurs in any part of the eye or optic nerve, because of illness or injury, can cause partial or complete blindness. There are four common eye diseases that cause blindness, and they are discussed here.
CataractCataracts are caused due to clouding of the clear lens in one or both eyes. It is the leading cause of blindness in the world, especially in developing countries, mainly because of the lack of advanced medical technology. The risk increases with age, and it is most common in people over the age of 60 years.
symptoms:
blurred vision
Trouble seeing in dim light
double vision
Colors seem faded
Sensitivity to bright light or glareTreatment :During the early stages, patients are encouraged to use corrective glasses or contact lenses. However, advanced stages of cataracts can be treated by surgical removal of the lens and replace it with an artificial one.Diabetic retinopathyDiabetes is caused by a decrease in levels of the hormone insulin in the body, which is very important for the metabolism of sugar or glucose in the body. Excessive sugar in the blood can cause damage to blood vessels, including those in the retina, and this can lead to impaired vision and even kebutaan.Gejala:
blurred vision
Their spots or dark threads floating in your vision
Farsightedness or hypermetropiaTreatmentDiabetic retinopathy can be treated with laser surgery. However, it can be prevented with regular eye examinations, and continue to monitor the blood glucose levels, with proper diet and olahraga.GlaukomaGlaucoma is a term used for a group of eye diseases, in which the fluid pressure inside the eye increases, causing damage to the optic nerve. The fact that makes glaucoma dangerous, is that patients have symptoms in the early stages of the disease. And people with a family history of the disease are also at higher risk.symptoms:Glaucoma is characterized by loss of peripheral vision, which is called 'tunnel vision'.Treatment :This disease can be treated with eye drops and surgery. Prompt diagnosis can check its progress and prevent vision loss.Macular degenerationOften referred to as age-related macular degeneration (AMD), it occurs in people over the age of 60 years. This disease affects the macula, the nerve endings in the retina, which play an important role in the central vision. This causes the patient's inability to perform the tasks of day-to-day. However, peripheral vision remains unaffected.There are two forms of macular degeneration. Wet macular degeneration involves the growth of abnormal blood vessels under the macula, whereas, dry macular degeneration involves degeneration of the macula photosensitive cells.symptoms:
- The difficulty in identifying colors
- Trouble seeing in bright light
- The straight line seemed distracted
- Dark spots in central vision area
Treatment :This condition is treated with the use of tools, laser treatments, vitamin combination therapy and photo-therapy dinamis.
Other Eye Diseases
- Stargardt's disease: inherited juvenile macular degeneration, loss of central vision and color, partial to complete blindness
- Juvenile retinoschisis: an inherited disease, the progressive loss of central vision and peripheral, more often affects males
- Macular Holes: affects the central retina, forms a hole in the macula due to aging
- Optic nerve disease: inflammatory or hereditary conditions, vision is lost quickly, incurable
- Uveal melanoma: common cancer originating from the eye, due to aging
- Retinitis pigmentosa: a group of hereditary eye disorders as a result of a defective gene, affect the retina, loss of vision gradually
- Retinal detachment: retinal skin away from the underlying layer of support tissue. More commonly associated with aging.
Most, not all eye diseases can be prevented or cured with proper diagnosis and treatment. Eyes, being such a delicate part of the body, should always be considered, and even if there is the slightest problem should be examined.
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