U.S. doctors online nowAsk doctors free
A 21-year-old member asked:

explain the optic nerve?

4 doctor answers6 doctors weighed in
Dr. James Leaming
Specializes in Emergency Medicine
Cranial nerve II: The optic nerve transmits visual information from the retina to the brain. It represents the only peripheral manifestation of the central nervous system.
Dr. Robert Chang
Specializes in Ophthalmology
A cable: The cable connecting the information picked up by the retina and the brain's visual cortex, after passing through other visual processing areas. The optic nerve crosses at the chiasm, and can be damaged anywhere along it's path. It's part of the central nervous system, which is more difficult to regenerate.
Dr. Richard Bensinger
Ophthalmology 52 years experience
Visual cable: The optic nerve, the head of which is described in the back of the eye by your ophthalmologist as the disc, is the cable carrying visual information into the brain where it ends up in the occipital lobe and interpreted as vision. It contains over 1.2 million fibers as well as supporting elements.A truly amazing nerve.
Dr. Alan Ali
Dr. Alan Alianswered
Psychiatry 32 years experience
Optic nerves: Second pair of cranial nerves, transmitting impulses from the retina at the back of the eyes, to the brain. It carries sensory information relating to vision.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
$30 per visit with
membership

Similar questions

A 43-year-old member asked:

What can I do to treat redness in my eyes?

1 doctor answer1 doctor weighed in
Dr. Howard Pomeranz
Ophthalmology 28 years experience
Eye rednesa: Depends on the cause. Eye redness can be due to dryness, allergy, infection, or inflammation of the eye. See your eye doctor to determine the cause of the redness.
A 44-year-old member asked:

How long can a human keep their eyes open?

1 doctor answer2 doctors weighed in
Dr. Richard Bensinger
Ophthalmology 52 years experience
No limit: There are strong protective reflexes which cause blinking to protect the eye. Given sufficient will power, someone might keep the eye open indefinitely - something done for religious reasons by some. Be happy that your eyes blink to spread the tears and keep the eye healthy.
A 33-year-old member asked:

Who are some reliable blepharoplasty/eyelid surgeons idaho?

3 doctor answers4 doctors weighed in
Dr. Richard Tholen
Plastic Surgery 41 years experience
Use references: You should ask a trusted referring doctor locally, or go online to surgery.Org for abps-certified plastic surgeons who are also members of the american society for aesthetic plastic surgery. Ask for experience in eyelid surgery and look at plenty of before and after photographs.
A 34-year-old member asked:

What are suggested excercises for a pinched sciatic nerve?

1 doctor answer1 doctor weighed in
Dr. Bennett Machanic
Neurology 52 years experience
McKenzie: Several exercise approaches can help low back pain, and physical therapists can instruct in williams and mckenzie approaches. Some specialized therapists can use felderkreis approaches. Best to have direct expert instruction prior to using these techniques. Although pilates is touted, need an expert to select safest approach.
A 47-year-old member asked:

What would happen if your eyes don't close when you sneeze?

1 doctor answer2 doctors weighed in
Dr. Jeffrey Gold
Ophthalmology 53 years experience
No harm: It is the usual reflex for the eyes to close when you sneeze, but it is harmless if they don't.

Related questions

A 21-year-old member asked:
2 doctor answers5 doctors weighed in
A 42-year-old member asked:
2 doctor answers3 doctors weighed in
A 43-year-old member asked:
3 doctor answers8 doctors weighed in
A 30-year-old member asked:
1 doctor answer1 doctor weighed in
A 51-year-old member asked:
1 doctor answer3 doctors weighed in

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
$30 per visit with
membership
Last updated May 7, 2018

People also asked

Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
$30 per visit with
membership

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.