A test which measures the extent and distribution of the field of vision.
The visual field test may be done by a number of methods including what are termed confrontation, tangent screen exam and automated perimetry.
Although the test may seem tedious, it is not painful or uncomfortable.
Many diseases can adversely affect the visual fields including glaucoma, strokes, high blood pressure (hypertension), diabetes, multiple sclerosis, and overactivity of the thyroid gland (hyperthyroidism). Medications can also affect the visual fields, including antimalaria medicines such as chloroquine/ATABRINE and hydroxychloroquine/PLAQUENIL.
The testicles (also called testes or gonads) are the male sex glands. They are located behind the penis in a pouch of skin called the scrotum. The testicles produce and store sperm, and they are also the body’s main source of male hormones (testosterone). These hormones control the development of the reproductive organs and other […]
- Testicular cancer
A malignant tumor of the male sex organ (testicle) that normally produces the hormone testosterone. It is one of the most common cancers in young men. Most testicular cancers are found by men themselves, as lumps in the testicles. The risk of testicular cancer is increased in males whose testicles did not move down normally […]
- Testicular feminization syndrome
Now more appropriately called the complete androgen insensitivity syndrome, this is a genetic disorder that makes XY fetuses insensitive (unresponsive) to androgens (male hormones). Instead, they are born looking externally like normal girls. Internally, there is a short blind-pouch vagina and no uterus, fallopian tubes or ovaries. There are testes in the abdomen or the […]
- Testicular self-examination
A monthly procedure for detecting the early signs of testicular cancer. Men should check the testes visually for new swelling or other changes on the skin of the scrotum, roll each testicle between thumb and fingers to detect internal growths, and check the cord (epididymis) on the top and back of each testicle for growths. […]
- Testing, anonymous
Testing in which no name or other means is used to identify the person tested. There is total anonymity. For example, the State of Florida requires that each county have a site for anonymous HIV testing.