That crawling feeling in your eye, known as foreign body sensation, often stems from dry eyes, allergies, or something actually in the eye like dust, but can also signal a corneal scratch, blepharitis (eyelid inflammation), or infections, with more serious causes like formication (nerve-related crawling) or pterygium (eye growth) being possibilities, so seeing an eye doctor is key if it persists or worsens.
This is called a foreign body sensation. A doctor may not find anything wrong with your eye. If you had something very small in your eye, like a speck of dirt, tears may have washed it out. Or you may have a small scratch on the surface of the eye (cornea), which can make it feel as if something is still in your eye.
Symptoms of eye stroke
Most people with an eye stroke notice a loss of vision in one eye upon waking in the morning with no pain. Some people notice a dark area or shadow in their vision that affects the upper or lower half of their visual field. Other symptoms include loss of visual contrast and light sensitivity.
The foreign body sensation is what it's called when nothing is in your eye, but you feel that there is. You may have an eyelash in there or experience dry eye all the time. Sometimes, the contact lenses you wear could irritate the eyelid, as well.
Early Multiple Sclerosis (MS) eye symptoms often involve optic neuritis, causing pain with eye movement, blurred vision (especially in one eye), loss of color vision (colors seem faded), temporary blindness, or blind spots, often accompanied by flashing lights. Double vision (diplopia) and involuntary rapid eye movements (nystagmus) are also common, as damage to the optic nerve or brainstem disrupts vision signals. These symptoms can come and go but warrant a prompt medical check-up.
Three key warning signs of Multiple Sclerosis (MS) often involve vision problems (like blurred vision or pain with eye movement), numbness or tingling sensations, and fatigue, along with balance issues, weakness, and coordination difficulties, though symptoms vary widely and can include cognitive or bladder problems too.
An episode of Optic Neuritis typically begins with eye pain, especially with eye movements. Within a few days, patients will notice blurred vision in the affected eye. Often this appears like a “thumb-print” or smudge that blurs the vision. Within a week, this may progress to darkening of part of the visual field.
If a person can feel something in their eye, it is typically an eyelash, some dust, or a grain of sand. However, abrasions, infections, ulcers, dry eyes, and other health issues can cause a similar feeling. Dry eyes and inflammation of the eyelids can make it feel as though something is in the eye.
Your eyes offer vital clues to overall health, with signs like yellowing whites (jaundice) indicating liver issues, red spots/vessel changes hinting at diabetes or high blood pressure, and sudden flashes/floaters suggesting retinal problems, while a doctor can spot hidden issues like high cholesterol (arcus senilis, xanthalasma) or even certain cancers during a dilated exam. Changes in pupil size, drooping eyelids, and persistent dry eyes or headaches can also signal underlying conditions, making regular eye exams crucial for early detection of silent diseases.
Symptoms of an Eye Parasite
Other signs and symptoms may include:
These symptoms include blurred or double vision, a droopy eyelid, a dilated pupil, pain above or behind one eye, weakness or numbness, he said. “If you experience these symptoms, contact your primary care provider quickly, and you can be screened using a brain scan,” Bradbury said.
The 5 key warning signs of a stroke, often remembered with the FAST acronym, are sudden Face drooping, Arm weakness, Speech difficulty, and the crucial Time to call 911; other signs include sudden trouble seeing, walking, dizziness, or a severe headache, requiring immediate emergency care.
Early signs of an eye stroke (retinal artery occlusion or ischemic optic neuropathy) typically involve sudden, painless vision loss or changes, most often in only one eye, including blurred vision, blind spots, floaters, or a dark shadow covering part of your sight. It often happens upon waking and is a medical emergency requiring immediate attention to potentially save sight and identify a risk for a full stroke.
Eye twitching alone is usually harmless (stress, fatigue), but if it occurs with sudden facial drooping, arm weakness, or speech issues, it could signal a mini-stroke (TIA), requiring immediate medical attention (call 911/emergency services) as it's a warning for a full stroke. A TIA causes temporary symptoms like vision problems, dizziness, or numbness on one side, often resolving quickly, but needs urgent assessment to prevent a major stroke.
Most people know that high cholesterol can affect heart health—but it can also impact your eyes, especially the retina. Common symptoms of eye issues related to high cholesterol include blurry vision, dark spots in the field of vision, and eye pain.
Seek emergency medical care if:
Tumors located in the brain can often cause changes in the blood vessels of the eyes, and these changes can be detected during a dilated eye exam. Regular eye exams can also help detect other medical conditions such as diabetes, high blood pressure, high cholesterol and, more rarely, certain types of cancer.
If it feels like there's something in your eye, but there isn't, this is sometimes called foreign body sensation. This can be caused by various conditions or irritations affecting the eye's surface.
Blepharitis (blef-uh-RYE-tis) is a condition that causes swelling, itching and other irritation of the eyelids. Blepharitis usually affects both eyes along the edges of the eyelids. Blepharitis may be caused by usually harmless bacteria on eyelids that become overpopulated.
A pterygium is a noncancerous growth that starts in the clear, thin tissue (conjunctiva) of the eye. This growth covers the white part of the eye (sclera) and extends onto the cornea. It is often slightly raised and contains visible blood vessels. The problem may occur on one or both eyes.
About half of people with MS at some time or other get a particular problem called optic neuritis. This is when your optic nerve becomes inflamed. Optic neuritis symptoms can include blurry vision, 'washed out' colour vision, and eye pain for a few days when you move your eyes.
In some cases, feeling like something is in your eye may be a sign of an eye infection. Common eye infections include conjunctivitis (pink eye), styes, and keratitis. These can cause redness, irritation, and discharge from the eye.
The five cardinal signs of inflammation, first described by the ancients and later expanded, are redness (rubor), heat (calor), swelling (tumor), pain (dolor), and loss of function (functio laesa), resulting from the body's protective response to injury or infection, characterized by increased blood flow, fluid buildup, and chemical signals affecting nerve endings.