One test, called tonometry, measures the amount of fluid pressure in the eye. It is a painless procedure that involves blowing a puff of pressurized air toward the patient's eye as the patient sits near a lamp and measuring the changes.
There are no definitive tests for diagnosing SLE.
Blood tests or other laboratory tests are not useful in diagnosing lice infestations.
These tests evaluate the patient's movement, gait, reflexes, coordination, balance, and sensory perception.
The hardest tests would be diagnosing real patients and disecting a dead human being.
Because patients with Marfan are at increased risk of glaucoma, they should have the fluid pressure inside the eye measured every year as part of an eye examination. Glaucoma can be treated with medications or with surgery.
If caught early, glaucoma-related blindness is easily prevented. However, since it does not produce symptoms until late in its cycle, periodic tests for the disease are necessary.
The hardest tests would be diagnosing real patients and disecting a dead human being.
Visual field tests (perimetry) can detect blind spots in a patient's field of vision before the patient is aware of them. Certain defects may indicate glaucoma.
Electrolyte tests are used for diagnosing dietary deficiencies, excess loss of nutrients due to urination, vomiting, and diarrhea, or abnormal shifts in the location of an electrolyte within the body
The doctor may order blood or other immunological tests. These tests are aimed at detecting antibodies to the Epstein-Barr virus, which has been known to cause cancer of the nasopharynx.
Standard blood tests are ordered and additional tests are typically required, including thyroid studies, vitamin B-12 levels, and, if appropriate, tests for Lyme disease , syphilis, or HIV since these infections can affect the brain
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