- Acanthamoeba Keratitis
Poor contact lens hygiene often causes this rare but serious eye infection.
- Amblyopia (Lazy Eye)
is a vision development problem in infants and young children that can lead to permanent vision loss.
- Bell's Palsy
This condition causes sudden paralysis of one side of the face. Because of inability to blink, you may develop severe dry eye.
Inflammation of the eyelids can cause chronic eye irritation, tearing, foreign body sensation and crusty debris.
If you live long enough, it's likely you eventually will notice cloudy vision from cataracts. Learn about causes and about cataract surgery, which replaces your eye's natural lens with an artificial one.
- Color Blindness
Learn the varieties of color deficiency and how to cope in our color-coded world.
- Detached Retina
Flashes of light and floating spots are classic warning signs of a detached retina
- Dry Eye Syndrome
Why eyes get dry. Read about eye drops, tear duct (punctal) plugs and nutritional supplements for more eye moisture.
- Eye Occlusions (Eye Strokes)
Sudden vision loss can occur when a clot or blockage interrupts blood flow to vital eye structures.
- Eye Twitching
Eyelid twitches, tics and spasms are maddening. Here are common causes.
- Floaters, Flashes and Spots
Eye floaters and flashes may be harmless, or they may signal a serious problem, like a detached retina.
- Macular Hole
Suddenly blurry or distorted vision, especially in seniors and diabetics, may mean a macular hole.
Uncontrollable eye movements from nystagmus often have neurological causes.
- Ocular Migraine
Ocular migraine causes a sensation of looking through shattered glass.
- Ocular Rosacea
How to solve eye and eyelid irritation.
- Optic Neuritis and Optic Neuropathy
An inflamed optic nerve can cause blurry vision and blind spots.
- Photophobia (Light Sensitivity)
Sensitive to light? Many eye conditions can cause this problem.
- Pinguecula and Pterygium
Pingueculae and pterygia are growths on the eye.
- Ptosis (Drooping Eyelid)
Drooping eyelids can be corrected with eyelid surgery (also called blepharoplasty).
- Red Eyes
Red eyes can be caused by allergies, eye infections and eye injuries. Learn more causes of red eye and how to treat bloodshot eyes.
- Sjogren's Syndrome
Dry eye is a common symptom of this autoimmune disorder.
Key facts about strabismus and crossed eyes, including causes and treatments (strabismus surgery, vision therapy and orthoptics).
What causes styes in your eyelid — and how to prevent and treat them.
- Subconjunctival Hemorrhage
Sudden redness in the white of your eye may be a subconjunctival hemorrhage.
- Swollen Eyelids
Swollen eyes have many causes. Here are tips for prevention and treatment.
Painful inflammation of the uvea causes light sensitivity, floaters and blurred vision.
Usually caused by an irregular cornea, astigmatism causes blur at all distances.
- Blurry Vision
Blurry vision has many causes, from fatigue and eyestrain to serious eye diseases such as glaucoma.
- Double Vision (Diplopia)
Many conditions cause double vision, including stroke and cataracts.
- Higher-Order Aberrations (HOAs)
Higher-order aberrations are vision errors causing poor night vision or double images.
- Hyperopia (Farsightedness)
Farsighted people can have poor near vision or blurred vision at all distances.
- Myopia (Nearsightedness)
Nearsighted people can see fine up close, but distant objects are a blur.
- Peripheral Vision Loss
"Tunnel vision" can have various causes, including glaucoma.
Presbyopia means difficulty seeing close up for people 40 and older.
- CMV Retinitis
About 80 percent of adults have been exposed to the cytomegalovirus (CMV), but it mostly affects people with poor immune systems, such as AIDS patients.
- Conjunctivitis (Pink Eye)
What you can do about redness, swelling, itching and tearing of pink eye. Also read about pink eye treatment and the various conjunctivitis types.
- Diabetic Retinopathy
Diabetes causes sight-threatening retinal degradation. Also read about treatment for diabetic retinopathy and macular edema.
- Eye Herpes
Ocular herpes is a recurrent viral infection that may lead to serious vision loss. Read how herpes of the eye is transmitted and treated.
- Fuchs' Corneal Dystrophy
Causes loss of vision and clouding of the cornea due to degeneration of the corneal endothelium and corneal edema.
Glaucoma damages the optic nerve and diminishes the field of vision.
Special contact lenses can help this condition that changes the shape of your eye.
- Macular Degeneration (AMD)
- Macular Dystrophy
Central vision loss can be associated with this inherited eye disease.
- Ocular Hypertension
High eye pressure has no symptoms, but can be easily detected in an eye exam. Learn what can be done to prevent glaucoma and possible eye damage.
- Retinitis Pigmentosa
Poor night vision and a narrowing field of vision beginning in childhood herald this rare disorder.
- Stargardt's Disease (STGD)
Children and young people can develop Stargardt's disease, often leading to central vision loss.