Table of Contents
- 1 What is dimness of vision especially in one eye without any detectable disease?
- 2 What is the medical term for the disorder in which the eyes are not directed in a parallel manner?
- 3 Which term describes blindness in one half of the visual field?
- 4 What is it called when you lose your eyesight?
- 5 Why does astigmatism occur?
- 6 What is the loss of sight?
What is dimness of vision especially in one eye without any detectable disease?
Amblyopia is a dimness of vision, especially when occurring in one eye without apparent physical defect or disease.
What is the medical term for the disorder in which the eyes are not directed in a parallel manner?
Strabismus is a condition in which the eyes do not properly align with each other when looking at an object. The eye that is focused on an object can alternate. The condition may be present occasionally or constantly.
What term describes a condition in which the eye does not focus correctly because of uneven curvature of the cornea?
Astigmatism is an irregularly shaped cornea or lens that prevents light from focusing properly on the retina, the light-sensitive surface at the back of the eye. The surface of the cornea is shaped more like a football instead of round like a basketball and the eye is unable to focus light rays to a single point.
Which term describes blindness in one half of the visual field?
Hemianopsia, or hemianopia, is a loss of vision or blindness (anopsia) in half the visual field, usually on one side of the vertical midline. The most common causes of this damage are stroke, brain tumor, and trauma.
What is it called when you lose your eyesight?
Age-related macular degeneration (AMD) is a disease that gradually destroys the central vision. In people over 60, AMD is a leading cause of vision loss. Wet AMD occurs when abnormal blood vessels behind the retina start to grow under the macula, leaking blood and fluid and causing rapid vision loss.
What is the strabismus?
Strabismus (crossed eyes) is a condition in which one eye is turned in a direction that is different from the other eye. Treatment may include glasses, patching, eye exercises, medication or surgery.
Why does astigmatism occur?
Astigmatism occurs when either the front surface of the eye (cornea) or the lens inside the eye has mismatched curves. Instead of having one curve like a round ball, the surface is egg-shaped. This causes blurred vision at all distances.
What is the loss of sight?
Vision loss is any reduction in the ability to see, including blurred vision, cloudy vision, double vision, blind spots, poor night vision, and loss of peripheral vision (tunnel vision). Vision loss may affect one or both eyes, it may occur gradually or suddenly, and it may be partial or complete.