Differential Diagnosis for Flashes of Light in One Eye
Single Most Likely Diagnosis
- Posterior Vitreous Detachment (PVD): This condition is the most common cause of flashes of light in one eye, especially in older adults. It occurs when the vitreous gel in the eye separates from the retina, causing flashes of light as the vitreous gel pulls on the retina.
Other Likely Diagnoses
- Retinal Detachment: A serious condition where the retina separates from the back of the eye, often preceded by flashes of light and floaters. Prompt treatment is necessary to prevent vision loss.
- Vitreous Detachment with Retinal Tear: Similar to PVD, but with a tear in the retina, which can lead to retinal detachment if not treated.
- Migraine: Some people experience visual auras, including flashes of light, as part of a migraine episode.
- Ocular Migraine: A condition characterized by transient visual symptoms, including flashes of light, without a headache.
Do Not Miss Diagnoses
- Retinal Vein Occlusion: A blockage of the veins in the retina, which can cause sudden vision loss and flashes of light. Prompt treatment is necessary to prevent further vision loss.
- Central Retinal Artery Occlusion: A blockage of the artery that supplies blood to the retina, which can cause sudden and severe vision loss.
- Giant Cell Arteritis: An inflammatory condition that can cause vision loss and flashes of light, especially in older adults.
Rare Diagnoses
- Ocular Tumors: Rarely, flashes of light can be a symptom of an ocular tumor, such as a choroidal melanoma.
- Intraocular Inflammation: Conditions like uveitis or scleritis can cause flashes of light, although these are less common causes.
- Traumatic Eye Injury: A blow to the eye can cause flashes of light, especially if there is damage to the retina or vitreous.