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Optic Neuritis
Today's Top News Stories | • | Early Elective C-Sections Produce Complications - Jan 07, 2009, 17:00
Babies delivered at 37 weeks have double the troubles of those born at 39 weeks.
| • | Gene Governs Response to Leukemia Chemotherapy - Jan 07, 2009, 17:00
Acute lymphoblastic leukemia is most common pediatric cancer. | • | Teen Birth Rate Up in 26 States in 2006 - Jan 07, 2009, 14:00
Highest rates in South, Southwest; lowest rates in Northeast, government reports. | • | Clinical Trials Update: Jan. 7, 2009 - Jan 07, 2009, 09:58
- Hypertension (High Blood Pressure)
- Attention Deficit/Hyperactivity Disorder (ADHD - Pediatric)
- Memory Loss
| • | Study of Everest Climbers Questions Oxygen Use - Jan 07, 2009, 17:00
Whether low levels would work for ER patients with hypoxia remains unclear. |
Pictures & Images
External and Internal Eye Anatomy
Today's Top News Stories | • | Early Elective C-Sections Produce Complications - Jan 07, 2009, 17:00
Babies delivered at 37 weeks have double the troubles of those born at 39 weeks.
| • | Gene Governs Response to Leukemia Chemotherapy - Jan 07, 2009, 17:00
Acute lymphoblastic leukemia is most common pediatric cancer. | • | Teen Birth Rate Up in 26 States in 2006 - Jan 07, 2009, 14:00
Highest rates in South, Southwest; lowest rates in Northeast, government reports. | • | Clinical Trials Update: Jan. 7, 2009 - Jan 07, 2009, 09:58
- Hypertension (High Blood Pressure)
- Attention Deficit/Hyperactivity Disorder (ADHD - Pediatric)
- Memory Loss
| • | Study of Everest Climbers Questions Oxygen Use - Jan 07, 2009, 17:00
Whether low levels would work for ER patients with hypoxia remains unclear. |
The cornea allows light to enter the eye. As light passes through the eye the iris changes shape by expanding and letting more light through or constricting and letting less light through to change pupil size. The lens then changes shape to allow the accurate focusing of light on the retina. Light excites photoreceptors that eventually, through a chemical process, transmit nerve signals through the optic nerve to the brain. The brain processes these nerve impulses into sight.
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Jump to another section
• Definition
• Optic Neuritis Overview, Causes, & Risk Factors
• Optic Neuritis Symptoms & Signs
• Optic Neuritis Diagnosis & Tests
• Optic Neuritis Treatment
• Optic Neuritis Prognosis
• Optic Neuritis Complications
• Calling Your Health Care Provider
• Pictures & Images
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Tests & Exams
• MRI of the Head
• Ophthalmoscopy
• Visual Acuity Test
Other Topics
• Blindness
• Eye Pain
• Intravenous
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• Systemic
• Vision Problems
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