Astigmatism occurs because the cornea is shaped more like a football than a baseball. This different curvature causes 2 images to appear on the retina and causes blurry vision for any distance. Read article
Color Blindness, or Color Vision Deficiency, is an eye condition where a person is not able to distinguish certain colors or shades of colors to some degree. Read article
Eye Floaters, also known as vitreous floaters or eye spots. They are tiny specks, circles, or thread-like clouds that appear in your field of vision. Read article
Hyperopia is a refractive error where the eyeball is shorter than normal. This causes the image to focus behind the retina rather that on it. Read article
Myopia is a refractive error where the eyeball is longer than normal. This causes the image to focus in front of the retina rather that on it. Read article