Featured Content
Featured Content
Common Questions About Preeclampsia and Pregnancy
Pregnancy is an exciting time that brings plenty of changes to an expecting mother’s health. This excitement also can come with its share of stressors. Soon-to-be mothers and parents need to...
Community-Acquired Pneumonia
Community-acquired pneumonia is lung infection that develops in people who are not patients in a hospital, usually in people with a normal (competent) immune system, or in those who are immunocompromised...
Human Immunodeficiency Virus (HIV) Infection
Human immunodeficiency virus (HIV) infection is a viral infection that progressively destroys certain white blood cells and is treated with antiretroviral medications. If untreated, it can cause...
Listeria, Listeriosis, and Food Recalls
Mushrooms, soft cheeses, frozen waffles, precooked chicken, deli meats …Over the past several months, there have been many headline-grabbing recalls of foods sold around the country. Many of...
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Test Your Knowledge
View AllCataract
Which one of the following descriptions of adverse eye conditions best describes cataract?
- A condition in which light rays entering the eye are not focused on the retina, causing blurred vision.
- Progressive optic nerve damage that leads to progressive loss of vision usually occurs because of increased pressure in the eye.
- A clouding (opacity) of the lens of the eye that causes a progressive, painless loss of vision
- A condition that causes progressive damage to the macula, the central and most vital area of the retina, resulting in gradual loss of central vision.
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Important: The authors, reviewers, and editors of this material have made extensive efforts to ensure that treatments, drugs, and discussions about medical practice are accurate and conform to the standards accepted at the time of publication. However, constant changes in information resulting from continuing research and clinical experience, reasonable differences in opinions among authorities, unique aspects of individual clinical situations, and the possibility of human error in preparing such an extensive text mean that other sources of medical information may differ from the information on this site. The information on this site is not intended to be professional advice and is not intended to replace personal consultation with a qualified physician, pharmacist, or other health care professional. The reader should not disregard medical advice or delay seeking it because of something found on this site.
DID YOU KNOW...
DID YOU KNOW...
Overview of Neuromuscular Junction Disorders
Nerve gases used in chemical warfare interfere with communication between nerves and muscles.
