Hallucinogens are a diverse group of drugs that alter a person’s awareness of their surroundings as well as their own thoughts and feelings. They are commonly split into two categories: classic hallucinogens (such as LSD) and dissociative drugs (such as PCP). Both types of hallucinogens can cause hallucinations, or sensations and images that seem real though they are not. Additionally, dissociative drugs can cause users to feel out of control or disconnected from their body and environment.
A cataract is a clouding of the lens in your eye that affects your vision. Cataracts are very common in older people, and by age 80, more than half of all Americans either have a cataract or have had cataract surgery.
