Vision problems
Vision Problems
Vision problems or visual impairments are disorders that affect the ability to see. They can range from mild conditions that cause slight discomfort or inconvenience, to severe conditions that can lead to total loss of vision, known as blindness.
Pronunciation
- Vision: /ˈvɪʒən/
- Problems: /ˈprɒbləmz/
Etymology
The term "vision" comes from the Latin word "visio", which means "sight". The term "problems" comes from the Greek word "problema", which means "obstacle".
Types of Vision Problems
There are several types of vision problems, including:
- Myopia (nearsightedness): This is a condition where objects close to the viewer are clear, but distant objects appear blurry.
- Hyperopia (farsightedness): This is the opposite of myopia. Distant objects are clear, but close objects appear blurry.
- Astigmatism: This is a condition where the eye does not focus light evenly onto the retina, the light-sensitive tissue at the back of the eye. This can cause images to appear blurry or stretched.
- Presbyopia: This is a condition that affects most people as they age. The eye gradually loses its ability to focus on close objects.
- Cataracts: These are cloudy areas in the eye's lens, leading to a decrease in vision.
- Glaucoma: This is a group of eye conditions that damage the optic nerve, often due to high pressure in the eye.
- Macular Degeneration: This is a condition that destroys the sharp, central vision needed for seeing objects clearly.
Treatment
Treatment for vision problems depends on the specific condition and its severity. It may include glasses or contact lenses, medication, or surgery. In some cases, vision therapy may be recommended.
See Also
External links
- Medical encyclopedia article on Vision problems
- Wikipedia's article - Vision problems
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