Psoriatic arthritis can affect the eyes causing inflammation that starts inside the eye, in the uvea, and can spread to other parts of the eye. Symptoms range from mild conjunctivitis (pink eye) to severe (uveitis), with pain, blurred vision or floating spots. “This inflammation, if left untreated, can damage eye tissues resulting in vision loss,” says David Reed, O.D., an adjunct faculty member of the Pennsylvania, New England and Southern Colleges of Optometry. If you have psoriatic arthritis, an eye exam will look for these tell-tale signs of inflammation. If your doctor diagnoses you with uveitis, you may be treated with eye drops and anti-inflammatory medications.