Allergies to the eyes, commonly known as allergic conjunctivitis, are very prevalent. They happen when the eyes become irritated by something (called an allergen). To combat the allergen, the eyes create a chemical called histamine. The eyes and conjunctiva become red, puffy, and itchy as a result.
Herpes simplex virus (HSV) is a widespread virus that infects a large number of people. This virus, in addition to causing cold sores, can also cause sores on the eyes. The disorder is known as eye herpes, ocular herpes, or herpetic eye disease when it affects a person's eyes. Because it can cause terrible side effects, eye herpes should be taken seriously. Eye herpes can compromise a person's vision and deeper layers of the eyes in rare cases.
Spots, weblike lines, or rings that move through your field of vision are known as eye floaters. When you move your eyes or try to look at them directly, they may seem as black or grey particles that drift. Eye floaters appear to be objects in front of your eyes, but they are actually in your eye.