Conjunctivitis: This is a common condition that can cause eye problems such as redness, itching, and discharge, and can be associated with on-and-off fever, especially if it's caused by a viral or bacterial infection.

Uveitis: This inflammation of the uvea can cause eye pain, sensitivity to light, and vision problems, and may be accompanied by fever if it's due to an infectious cause.
Orbital Cellulitis: An infection of the tissues surrounding the eye, which can cause eye pain, swelling, and fever.
Keratitis: An infection of the cornea that can cause eye pain, redness, and vision problems, and may be associated with fever.

Endophthalmitis: A severe infection within the eye that can cause vision loss and is a medical emergency. Fever may be present, and prompt treatment is necessary.
Meningitis: Although less directly related to eye problems, meningitis can cause fever and, in some cases, eye symptoms such as photophobia. It's a life-threatening condition that requires immediate medical attention.
Syphilis: In its secondary stage, syphilis can cause a wide range of symptoms including fever and eye problems like uveitis or conjunctivitis. It's crucial to consider this diagnosis due to its potential for serious complications if left untreated.

Toxocariasis: A parasitic infection that can cause ocular larva migrans, leading to eye problems. It's more common in children and can be associated with fever.
Cysticercosis: Caused by the pork tapeworm, this condition can lead to eye problems if the larvae infect the eye. Fever may be present, especially during the initial infection phase.
Ocular Lyme Disease: Lyme disease can cause various eye problems, including conjunctivitis and uveitis, and is associated with fever in its early stages. It's rare but should be considered in endemic areas.