All are intended to decrease eye pressure and, thereby, protect the optic nerve. Currently, in the US, eye drops are often the first choice for treating patients. For many people a combination of medications and laser treatment can safely control eye pressure for years. Eye drops used in managing glaucoma decrease eye pressure by helping the eyeâs fluid to drain better and/or decreasing the amount of fluid made by the eye. Drugs to treat glaucoma are classified by their active ingredient.
The class Arachnida includes a diverse group of arthropods: spiders, scorpions, ticks, mites, harvestmen, and their cousins. The class Arachnida includes a diverse group of arthropods: spiders, scorpions, ticks, mites, harvestmen, and their cousins. Scientists describe over 100,000 species of arachnids. In North America alone, there are about 8,000 arachnid species. The name Arachnida derives from the Greek arÃ¡chnÄ, which means spider. The vast majority of arachnids are spiders. Most arachnids are carnivorous, typically preying on insects, and terrestrial, living on land.
Almost all adult arachnids have eight legs, and arachnids may be easily distinguished from insects by this fact, since insects have six legs.