Differential Diagnosis for Left Eye Redness, Sensitivity to Light, Soreness, and Pressure with Clear Discharge
- Single Most Likely Diagnosis
- Viral Conjunctivitis: This condition is characterized by redness, sensitivity to light, soreness, and pressure in the eye, along with a clear discharge. It's highly contagious and often caused by adenovirus. The presence of clear discharge and the combination of symptoms make viral conjunctivitis a likely diagnosis.
- Other Likely Diagnoses
- Allergic Conjunctivitis: This condition can cause eye redness, itching, and clear discharge, especially in individuals with a history of allergies. Seasonal variations and exposure to allergens can trigger these symptoms.
- Dry Eye Syndrome: Although typically associated with a lack of tears, severe dry eye can cause eye soreness, redness, and sensitivity to light. The clear discharge might be less prominent but can occur, especially if the dry eye leads to an inflammatory response.
- Blepharitis: Inflammation of the eyelids can cause redness, soreness, and sensitivity to light. While discharge is often more sticky or crusty, some forms of blepharitis can present with a clear discharge.
- Do Not Miss Diagnoses
- Acute Angle-Closure Glaucoma: This is a medical emergency that can present with severe eye pain, redness, sensitivity to light (photophobia), and decreased vision. Although discharge is not a primary symptom, the severe pain and pressure can sometimes be accompanied by a clear discharge. Missing this diagnosis can lead to permanent vision loss.
- Keratitis: Inflammation of the cornea can cause pain, redness, photophobia, and discharge. Fungal or bacterial keratitis requires prompt treatment to prevent corneal perforation and vision loss.
- Rare Diagnoses
- Sjögren's Syndrome: An autoimmune disorder that can cause dry eyes (and dry mouth), leading to symptoms similar to dry eye syndrome but as part of a systemic condition.
- Iritis (Anterior Uveitis): Inflammation of the iris can cause eye pain, redness, and sensitivity to light. It might be associated with systemic diseases or occur independently. Discharge is not a primary symptom, but it can occasionally be present.