Can blepharitis cause blurred vision? why?

Causes dry eye: Your oil glands don't work well with blepharitis and the tear quality you produce is poor leading to dry eye. The surface of the eye has to be smooth and lubricated to focus light well and to see well. With dry eyes, light scatters causing patches and 'clouds' of blurry vision. Talk to your eye doctor about remedies to help with blepharitis. Take care.

Blepharitis: Symptoms and signs includesymptoms and signs include watery eyes, red eyes, gritty, burning sensation, eyelids appear greasy, itchy, red and swollen. flaking of the skin around the eyes, crusted 7 sticky eyelashes on awakening, frequent blinking, sensitivity to light. If vision is blurred may be secondary but also may suggest need for further exam and diagnosis.