WE HAVE TWO TEAR systems in the eye. Thebaseline tear system is the one that keeps the eye moist and comfortable, keepsthe window of the eye nice and clear, and keeps out the dirt and debris. Whenyou don't make enough of these the eye can feel dry, gritty, itchy and burning,and you get blurred vision from dry spots because the tears break up,especially when you use your eyes to read, use the computer or stare atthings, and you don't blink as often.
The back up tear system is the one everyone knowsabout, the one you use to cry for emotional reasons, or if you peel onions.That comes from the lacrimal gland, and is all or nothing. It doesn't give youthe one or two tears you need, it dumps out a bucketful. So then you aretearing.! Thenumber one cause if a tearing eye is a dry eye kicking in the backup system.
Dry eye is also made worse by allergies, and you are exposed to more allergens when you are outside.It is best to come in and get a full examination to see what is going on with your eyes. I'd be happy to see you if you are in my area. Call 610-435-5333 for an appointment.
Lisa S. Bunin, M.D.
Eye, Eyelid, Skin & Laser Surgeon
Custom Cataract Surgery,Multifocal Lenses, Complete Eye Exams
This can be many things. ALL which can be assessed via a careful eye exam...
Most common are irritations of your Cornea or Anterior eye surface. Dry eye, Allergy etc..Also ocular inflammation, cataracts and retinal issues are possibilities...
If there is no pain associated with the sensitivity it may be due to dysfunctional year syndrome. If there is pain it may be iritis, an eye disease that requires the attention of an ophthalmologist. Some people are just sensitive to the light and require sunglasses outdoors others may have a retina problem that causes the sensitivity, albinism for example. It is possible but not likely that the tearing is the result of chronic allergy but this would typically be associated with red itchy eyes.
Any condition that affects the cornea (the clear, most anterior structure of the eye) leads to photosensitivity/photophobia (sensitivity to lights). This is because there are more nerve endings per square millimeter innervating the cornea than any other part of the human body (I believe the genitals are a close second place). If you've ever had a scratched cornea you would understand how sensitive the cornea can be! The common culprits for photophobia tend to be unmanaged dry eye disease, ocular allergies, contact lens overwear/keratitis, anterior uveitis, and cataracts.
Each of these conditions are managed differently, but the one that should be ruled out sooner better than later is uveitis. Uveitis is an inflammation of the uvea (particular structures of the eye) that can be associated with an underlying disease process (like lupus, syphilis, sarcoidosis, tuberculosis, Crohn's disease, etc.). When your doctor identifies uveitis they typically initiate a systemic workup with the assistance of your primary medical doctor. After treatment of the uveitis, the photophobia typically clears up quickly.
So there is obviously more historical information that will be needed by your ophthalmologist or optometrist, and there's no online source of information that replaces an examination by a medical professional. So my formal advice for you is to make an appointment with your doctor. But hopefully this has been somewhat helpful!
Do you have blurred vision in one or both eyes with this?
Does it occur when you are wearing prescription sunglasses?
Do you have the sensation of something in the eye?
Do you have itching and/or burning of your eyes?
Do you have allergies to air or household items?
What have you done to relieve your symptoms?