Blurred vision with swollen eyelids could be a symptom of an eye condition of conjunctivitis (pink eye) or of an allergy, or of a more serious underlying medical condition such as infection, inflammation, or autoimmune disorder.
Causes:
Allergic reactions to pollen, dust, or other allergens may result in swelling and inflammation of the eyelids and blurred vision.
Seasonal allergic rhinitis, also known as hay fever, and atopic dermatitis, also known as eczema, are two common types of allergic reactions that may result in blurred vision.
Medical Conditions: Certain medical conditions, such as diabetes, thyroid disorders, and autoimmune diseases, can also cause swollen eyelids and blurred vision. They are likely to affect the blood vessels in the eyes and cause inflammation and swelling.
Trauma: Trauma to the eye, such as a blow to the head or injury, can cause swelling of the eyelids as well as blurred vision.
Medications: Medications, like blood pressure drugs, are known for causing side effects such as swollen eyelids and vision blurs.
Diagnosis:
An ophthalmologist can diagnose blurred vision by conducting a comprehensive eye exam that typically includes the following steps:
- Visual acuity test: An ophthalmologist will measure the clarity of vision by asking the patient to read letters from a distance on a chart.
- Refraction test: The phoropter is a machine that is used by the ophthalmologist to determine the exact prescription for eyeglasses or contact lenses.
- Slit-lamp examination: A slit-lamp is a special microscope that illuminates and magnifies the eye to examine the front part of the eye, including the cornea, iris, and lens.
- Dilated eye exam: The ophthalmologist will place drops in the patient's eyes to dilate the pupils for a better view of the back of the eye.
- Tonometry: With this test, you can measure the pressure inside the eye, a sign of glaucoma.
Based on the results of these tests, the ophthalmologist can determine the cause of blurred vision and recommend an appropriate course of treatment.
Treatment:
- Eyeglasses or contact lenses: Eyeglasses or contact lenses can fix the problem of blurry vision caused by refractive errors like nearsightedness, farsightedness, or astigmatism.
- Lifestyle changes: Making some simple lifestyle changes such as taking frequent breaks, reducing screen time, and improving lighting can help eliminate blurred vision.
- Eye drops: Artificial tears eye drops such as "Refresh Tears and Systane" can help relieve dry eyes, which is a common cause of blurred vision.
- Prescription medications: In case blurred vision is due to a medical condition, like cataracts, glaucoma, or macular degeneration, the ophthalmologist may prescribe medication to treat the underlying condition.
- Surgery: Blurred vision can be corrected using surgery in some cases, for example, cataract surgery can remove a cloudy lens and replace it with an artificial one, and laser eye surgery is used to correct certain types of refractive errors.
Prevention:
It is essential to avoid allergen and keep the eyes clean and injury-free to avoid swollen eyelids and blurred vision. Wearing protective eyewear while participating in sports or other activities can also help prevent eye injuries.
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