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Health A-Z
Eye Health
Your eyes are your windows to the world. Learn how to maintain your eye health and what to expect from exams and treatments for common vision problems.
Astigmatism Test: Eye Exam and Online Test
Medically reviewed by Johnstone M. Kim, MD
How to Get Rid of a Stye
Medically reviewed by Bryan M. Wolynski, OD
What Is Dacryocystitis?
Medically reviewed by Johnstone M. Kim, MD
Bacterial Conjunctivitis (Pink Eye): Overview and More
By Luana Ferreira
Explore Eye Health
All
Glaucoma
Cataracts
Macular Degeneration
Vision Loss
More
Dry Eye Syndrome
More Eye Issues & Safety
Contact Lenses
Glasses
Exams & Procedures
Vision Improvement Surgery
Eye Anatomy
Kid's Eye Health
What Is Nyctalopia (Night Blindness)?
Medically reviewed by Bryan M. Wolynski, OD
Symptoms of Astigmatism
Medically reviewed by Bryan M. Wolynski, OD
Watery Eyes: Overview and More
By Rachael Zimlich, BSN, RN
How Long Is Pink Eye Contagious?
Medically reviewed by Johnstone M. Kim, MD
What Causes Eye Floaters?
Medically reviewed by Johnstone M. Kim, MD
Styes: Causes and Risk Factors
Medically reviewed by Johnstone M. Kim, MD
What Is Farsightedness (Hyperopia)?
Medically reviewed by Bryan M. Wolynski, OD
What You Should Know About Viral Conjunctivitis
Medically reviewed by Bryan M. Wolynski, OD
Living With Thyroid Eye Disease
Medically reviewed by Ami A. Shah, MD
Causes and Risk Factors of Thyroid Eye Disease
Medically reviewed by Ami A. Shah, MD
How Thyroid Eye Disease Is Diagnosed
Medically reviewed by Ami A. Shah, MD
How Thyroid Eye Disease Is Treated
Medically reviewed by Ami A. Shah, MD
Symptoms of Thyroid Eye Disease
Medically reviewed by Ami A. Shah, MD
How Do I Treat My Dry Eyes?
Medically reviewed by Ami A. Shah, MD
Why Are My Eyes Puffy?
Medically reviewed by Ami A. Shah, MD
What Are Monolids (Epicanthal Folds)?
Medically reviewed by Johnstone M. Kim, MD
What Is Hypertropia?
Medically reviewed by Bryan M. Wolynski, OD
Types of Eye Infections
By Lana Bandoim
What Is the Most Common Eye Color?
By Lana Bandoim
What to Know About Erythromycin Eye Ointment
By Mali Schantz-Feld
What Is a Marcus Gunn Pupil?
By Elizabeth Yuko, PhD
Blurry Vision in One Eye
By Elizabeth Yuko, PhD
Eye Surgery to Correct Vision Problems
Medically reviewed by Johnstone M. Kim, MD
What Is the Difference Between an Optometrist and an Ophthalmologist?
Medically reviewed by Ami A. Shah, MD
How To Improve Your Eyesight
By Brian Mastroianni
What Is a Red-Green Color Blind Test?
Medically reviewed by Bryan M. Wolynski, OD
What Do Color-Blind People See?
By Margaret Etudo
What Causes Double Vision?
By Luana Ferreira
What Causes Eyelid Pain?
Medically reviewed by Johnstone M. Kim, MD
Do Eye Exercises Improve Your Vision?
Medically reviewed by Johnstone M. Kim, MD
What to Know About Prednisolone Eye Drops
By Rachel Macpherson
What Causes Halos Around Lights?
Medically reviewed by Johnstone M. Kim, MD
Do Blue Light Glasses Work?
By Luana Ferreira
How Long Does LASIK Surgery Last?
By Mali Schantz-Feld
How To Test for Depth Perception
Medically reviewed by Johnstone M. Kim, MD
How Long Does a Stye Last?
Medically reviewed by Johnstone M. Kim, MD
How to Use Antibiotic Eye Ointments
Medically reviewed by Johnstone M. Kim, MD
Can I Use Neosporin for My Eye Infection?
Medically reviewed by Ami A. Shah, MD
How To Get Rid of Eye Floaters
Medically reviewed by Johnstone M. Kim, MD
What is an Optometrist?
Medically reviewed by Ami A. Shah, MD
What Is the Rarest Eye Color?
Medically reviewed by Ami A. Shah, MD
What to Know About Durezol Eye Drops
Medically reviewed by Bryan M. Wolynski, OD
The 8 Best Places to Buy Glasses Online in 2021
Fact checked by Ashley Hall
An Overview of Coloboma
By Sherry Christiansen
A Retinal Tear Can Cause a Retinal Detachment
Medically reviewed by Johnstone M. Kim, MD
What to Know About Rhythmic Eye Jerking in Nystagmus
Medically reviewed by Johnstone M. Kim, MD
Aniridia—A Genetic Eye Disorder Affecting the Iris
Medically reviewed by Johnstone M. Kim, MD
The 10 Best Contact Lens Solutions of 2021
Fact checked by Ashley Hall
What Your Blind Spot Really Is
Medically reviewed by Bryan M. Wolynski, OD
Charles Bonnet Syndrome: Symptoms, Causes, Diagnosis, and Treatment
Medically reviewed by Johnstone M. Kim, MD
How Epiretinal Membrane Can Affect Your Vision
Medically reviewed by Johnstone M. Kim, MD
Eye Movement Disorders of the Eyes
Medically reviewed by Ami A. Shah, MD
How Corneal Haze Can Affect Your Vision
Medically reviewed by Johnstone M. Kim, MD
Do Your Eyes Have Emmetropia?
Medically reviewed by Johnstone M. Kim, MD
Learn All About Tunnel Vision
Medically reviewed by Johnstone M. Kim, MD
The Grey Ring in Your Eye May Be Arcus Senilis
Medically reviewed by Ami A. Shah, MD
Why Are Your Eyes Discolored or Yellow?
Medically reviewed by Johnstone M. Kim, MD
Papilledema: Swelling Behind the Eye
Medically reviewed by Johnstone M. Kim, MD
Learn What It Means to Have 20/20 Vision
Medically reviewed by David R. Watt, MD
Discover How Depth Perception Works
Medically reviewed by Johnstone M. Kim, MD