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Eye charts of different variations have become a standard in vision screenings and eye exams. One of the most familiar charts associated with vision is the Snellen eye chart, designed by Dutch ophthalmologist Hermann Snellen in 1862 to measure visual acuity- how well you can see at various distances.
Cataracts, one of the most common causes of blindness, develop when the lens of the eye, located behind the iris and pupil, becomes opaque or cloudy. A cataract can result in loss of vision as it prevents light from passing into your eye and focusing on the retina.
AMD occurs when the part of the retina responsible for your sharp central vision, the macula, begins to deteriorate. Central vision is the visual field that you rely on to focus on objects clearly, to read or to drive. As AMD affects your macula, the condition often results in gradual central vision loss. AMD does not cause complete blindness, as those affected by the condition are able to see by relying on their peripheral or side vision.
Conjunctivitis, also called pink eye, is one of the most frequently seen eye diseases, especially in kids. It can be caused by viruses, bacteria or even allergies to pollen, chlorine in swimming pools, and ingredients in cosmetics, or other irritants, which touch the eyes. Some forms of conjunctivitis might be quite transmittable and quickly spread in school and at the office.
The hormonal fluctuations experienced during pregnancy can cause many unexpected changes in your body, including your eyes and vision. Most of these changes are temporary and will return to normal once you give birth. It’s important to know which vision changes are normal for an expecting mother and which could indicate a problem that requires medical attention.