Differential Diagnosis for Flashing Light in One Eye
Single Most Likely Diagnosis
- Migraine with aura: This is the most common cause of flashing lights in one eye, often accompanied by a headache and other visual disturbances. The flashing lights are usually unilateral and can be followed by a headache.
Other Likely Diagnoses
- Posterior vitreous detachment (PVD): This condition occurs when the vitreous gel in the eye separates from the retina, causing flashes of light. It is a common condition, especially in older adults.
- Retinal detachment: A serious condition where the retina separates from the back of the eye, causing flashes of light and vision loss. It requires prompt medical attention.
- Ocular migraine: Similar to migraine with aura, but without the headache. It can cause flashing lights, blind spots, and other visual disturbances.
Do Not Miss Diagnoses
- Retinal tear: A small tear in the retina that can lead to retinal detachment if left untreated. Prompt medical attention is necessary to prevent vision loss.
- Central retinal vein occlusion: A blockage of the vein that carries blood away from the retina, causing sudden vision loss and flashes of light.
- Temporal arteritis: Inflammation of the blood vessels in the head, which can cause flashing lights, vision loss, and headaches. If left untreated, it can lead to permanent vision loss.
Rare Diagnoses
- Occipital lobe seizures: Seizures that affect the part of the brain responsible for vision, causing flashing lights and other visual disturbances.
- Vitreous hemorrhage: Bleeding into the vitreous gel in the eye, causing sudden vision loss and flashes of light.
- Choroidal melanoma: A rare type of eye cancer that can cause flashing lights and vision loss.