|
|
A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.
In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
The horizontal fraction bar was introduced by the Arabs.
Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
![Auguste Comte (1798–1857), who is credited as the founder of sociology, began to analyze the bases ...](https://biology-forums.com/gallery/47/medium_599494_07_11_16_11_58_21_24077416.png)
![This Russian godfather is leaving a Moscow court just after he was acquitted of a double murder. Do ...](https://biology-forums.com/gallery/27/medium_660366_13_04_17_5_39_57_27662891.png)