Nearsightedness: Blurry vision that gets worse when you look at distant objects. Your doctor will call it myopia. You may have very good close vision.

Farsightedness: Blurry vision when you look at close up objects. Near and far objects may both look fuzzy. The doctor will say you have hyperopia.

Astigmatism: You might have blurry or double vision at any distance. You may also be nearsighted or farsighted.

Detached retina: You’ll notice a sudden onset of flashing lights often paired with black floaters in your vision. It won’t hurt, but at first you might see a dark curtain or veil covering a portion of your vision. Cover one eye and then the other and compare the sight in each one. It’s important to call your doctor immediately if you notice any of these symptoms

Color blindness: You have trouble with shades or intensity of colors. Because it’s all about perception, you may not know there’s a problem until the doctor finds it. This genetic condition mainly affects men.

Night blindness: It’s hard to see objects in dim light.

Cataracts: Because they develop slowly, your first symptom may be trouble with the vision test for your driver's license renewal. Or your doctor could spot it during a routine eye exam. Symptoms include:

Strabismus:Your eyes don't move together as they should. Both eyes or just one could be crossed inward or outward. A child who has it may rub one or both eyes often. They could also squint, tilt their head, or close one eye to see things better.