![]() However, a piece of wood, metal, or chemical irritant may pose a more serious risk that requires immediate attention. Most foreign bodies, such as an eyelash or a piece or dirt, resolve easily. Without the tear film to serve as a barrier, you may experience a gritty feeling in your eye when you blink.įoreign body: Any physical object or substance not naturally part of the environment of your eye can cause irritation and blinking is your body’s natural response to try and remove it. In people with dry eye syndrome, the glands do not produce enough tears or they do not produce the right type of tears (meaning the tear film evaporates too fast or it does not keep the eyes lubricated). Blinking irritates the ulcer.ĭry eye syndrome: Meibomian and lacrimal glands are responsible for producing tear film. The inflammation associated with the ulcer causes itchy, watery eyes that may also produce discharge and cause blurred vision. ![]() When you blink, you eyelid irritates the scratch causing pain.Ĭorneal ulcer: A corneal ulcer, also called keratitis, is an open sore on the cornea caused by an eye infection, severe dry eye, or other eye disorders. ![]() Any number of things including tree branches, fingernails, and makeup brushes can cause these scratches. In addition to eye irritation, blepharitis also produces crusted scales that flake off similar to hair dandruff.Ĭonjunctivitis: Viral or bacterial conjunctivitis, also known as “pink eye”, causes the conjunctiva (the clear tissue that covers a portion of the eye and inside of the eyelid) to become red and inflamed, which becomes noticeable when blinking.Ĭorneal abrasion: A corneal abrasion is a scratch on the outer surface of your eye. Clogged oil glands can also cause blepharitis. The inflammation can be felt when blinking.īlepharitis: Some people have too much bacteria on their eyelids, which causes them to become red, swollen, irritated, and itchy. The histamine causes red, itchy eyes that become inflamed. These reactions occur when mast cells in your eye release histamine in response to allergens. Here are some of the most common causes of eye pain when blinking:Īllergies: An eye allergy is also known as allergic conjunctivitis. As such, it is common for people to sense changes to their eyes – whether it is a piece of sand or a microscopic allergen.īecause the eyelid moves across the cornea each time you blink, any foreign object, dryness, irritation, or inflammation of the cornea can cause eye discomfort. The cornea has many nerve fibers that make it one of the most sensitive tissues in the human body. Why Does It Feel Like Something Is in My Eye? Inner mucus layer: Helps the tear spread and stick to the eye.Inner watery layer: Keeps the eye hydrated, repels bacteria, and helps clear particles away from the cornea.Outer oily layer: Keeps the surface of the tear smooth so it can be seen through and prevents the tear from evaporating.The film consists of three layers, all of which are important to keep the cornea healthy. Tear film contains enzymes, lipids, metabolites, and electrolytes. Second, it lubricates and provides nutrients to the eye using tear film. First, it clears debris and particles from the cornea, the transparent part of the eye that covers the iris and the pupil. This response originates in the brain’s nervous system where it sends a signal to muscles in the upper eyelid, which cause the eyelid to close and then open again.īlinking serves two purposes. Over the course of a day, that amounts to anywhere between 9,600 to 19,200 times (assuming you’re awake at least 16 hours).Ī single blink takes about 400 milliseconds. ![]() Why Do We Blink?īlinking occurs about every 3 to 6 seconds, or 10 to 20 times per minute. ![]() This blog will discuss common causes of eye pain when blinking and how to treat them. Recognizing this discomfort is the easy part diagnosing the cause is more complex. For example, you may take a heightened interest in your blinking if you feel something in your eye or experience eye pain. Because these functions are involuntary and reflexive, you typically don’t even notice them – that is until something goes awry.
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