Dry Eye Syndrome: This condition is characterized by insufficient lubrication on the surface of the eye, leading to intermittent symptoms such as dryness, grittiness, and blurred vision. It's a common issue that can be exacerbated by environmental factors, prolonged screen time, or certain medications.

Blepharitis: An inflammation of the eyelids that can cause intermittent symptoms like itching, burning, and blurred vision due to the buildup of debris and bacteria on the eyelids.
Conjunctivitis (Pink Eye): An infection or inflammation of the outer membrane of the eyeball and the inner eyelid, leading to redness, itching, and discharge, which can be intermittent.
Migraine-related Visual Auras: Some people experience visual disturbances, including intermittent blindness or seeing patterns, as part of a migraine aura.

Acute Angle-Closure Glaucoma: A medical emergency where the pressure in the eye increases rapidly, causing severe eye pain, blurred vision, headache, and sometimes nausea and vomiting. Intermittent symptoms can precede a full-blown attack.
Retinal Detachment: A condition where the retina separates from the back of the eye, leading to sudden flashes of light, floaters, and a shadow or curtain descending over the field of vision. Early symptoms can be intermittent.
Temporal Arteritis (Giant Cell Arteritis): An inflammation of the blood vessels, particularly those in the head, which can lead to intermittent vision loss, double vision, and eye pain, especially in older adults.

Multiple Sclerosis: An autoimmune disease that can affect the optic nerve, leading to intermittent vision problems, including blurred vision, double vision, and loss of vision.
Optic Neuritis: An inflammation of the optic nerve that can cause pain and temporary vision loss in one eye, which may be intermittent.
Uveitis: Inflammation of the uvea, the middle layer of the eye, which can lead to intermittent symptoms like eye pain, sensitivity to light, and blurred vision.