Close up of one annoyed red blood eye of mature adult women affected by conjunctivitis or after flu, cold or allergy Recognize the signs and symptoms of red eye that differentiate benign from ...

Your eyes may appear bloodshot in the morning due to allergies or dry eyes. But sometimes, red eyes can indicate a more serious condition, such as injury or infection. After waking up in the morning ...

A person’s pupils may be of different sizes (anisocoria) for several reasons, including physical trauma, response to light, and infection. The condition may also be present from birth. Pupils, or the ...

The size of your pupils varies throughout the day, but most people’s pupils fall within a particular size range. We’ll look at when and why your pupils change size. First, the range of “normal” pupil ...