- Cocaine abuse
Cocaine abuse occurs when a person continues using it despite the social and health problems caused by it.
- Medication reaction or side-effect
Medication side effects include nausea, vomiting, stomach upset, weakness, dizziness, seizures, and more.
- Nearsightedness
Nearsightedness is a common eye problem that causes blurry, distant vision.
- Astigmatism
Astigmatism is a common eye problem causing blurry vision, difficulty seeing details and eye strain headaches.
- Farsightedness (presbyopia)
Presbyopia causes an inability to focus on close objects, and headaches or eyestrain when working or reading.
- Lazy eye
Lazy eye occurs when the brain favors one eye over the other.
- Methamphetamine use
Methamphetamine use causes increased blood pressure, rapid heart rate, enlarged pupils, sweating, and more.
- Stroke
A stroke occurs when blood and oxygen to the brain are cut off, and causes numbness, confusion, and more.
- Adie's pupil
Adie's pupil is a rare disorder usually affecting only one eye, causing blurry or distorted vision in the eye.
- Brain tumor
Primary brain tumors are often benign but can cause seizures, ongoing headaches, or loss of coordination.