- Lazy eye
Lazy eye occurs when the brain favors one eye over the other.
- Botulinum toxin (Botox) injection
Botulinum toxin side effects may include pain and tenderness at the injection site, headache, nausea and more.
- Eye injury
There are many types of eye injury, and symptoms include eye pain, burning, irritation, bleeding, and more.
- Nearsightedness
Nearsightedness is a common eye problem that causes blurry, distant vision.
- Transient ischemic attack (mini-stroke)
Transient ischemic attacks cause headache, numbness, tingling, or weakness in the face, arm, or leg, and more.
- Alcohol intoxication
Alcohol intoxication, or drunkenness, is marked by impaired judgment, slurred speech, blurred vision and more.
- Labyrinthitis
Labyrinthitis, an infection and swelling in the inner ear, and may cause vertigo or hearing loss.
- Myasthenia gravis
Myasthenia gravis is caused by abnormal immune responses that weaken muscles, particularly of the face.
- Tourette syndrome
Tourette's syndrome is a nervous system disorder that causes involuntary movements or sounds called tics.
- Stroke
A stroke occurs when blood and oxygen to the brain are cut off, and causes numbness, confusion, and more.
- 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.
- Epilepsy (simple partial seizures)
During simple partial epileptic seizures, people remain fully conscious, able to respond to external stimuli.
- Epilepsy (complex partial seizures)
During complex partial seizures, people lose consciousness briefly.
- Horner's syndrome
Horner syndrome is a rare condition that can cause a drooping eyelid, decreased sweating, and a small pupil.
- Floppy eyelid syndrome
With floppy eyelid syndrome one or both upper eyelids become droopy, rubbery, and flip inside out easily.
