Birdshot chorioretinopathy

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Birdshot chorioretinopathy
Synonyms	Birdshot retinochoroidopathy, Birdshot uveitis
Pronounce	N/A
Specialty	N/A
Symptoms	Floaters, blurred vision, night blindness, loss of color vision
Complications	Cystoid macular edema, cataracts, glaucoma
Onset	Typically between ages 40 and 60
Duration	Chronic
Types
Causes	Unknown, possibly autoimmune disease
Risks	Association with HLA-A29
Diagnosis	Clinical diagnosis, fluorescein angiography, indocyanine green angiography, optical coherence tomography
Differential diagnosis	Sarcoidosis, Vogt-Koyanagi-Harada disease, multiple evanescent white dot syndrome
Prevention	None
Treatment	Corticosteroids, immunosuppressive drugs
Medication	Prednisone, mycophenolate mofetil, cyclosporine, infliximab
Prognosis	Variable, can lead to significant vision loss
Frequency	Rare
Deaths	N/A

Birdshot chorioretinopathy is a rare form of inflammatory disease that affects the eye, specifically the retina and choroid. It is characterized by multiple cream or yellowish-white lesions scattered in a "birdshot" pattern. The disease is typically bilateral, affecting both eyes, and is more common in middle-aged individuals, particularly those of Caucasian descent.

Etiology

The exact cause of birdshot chorioretinopathy is unknown, but it is believed to be an autoimmune disease. Some studies have suggested a strong association with the human leukocyte antigen (HLA)-A29, a specific genetic marker. However, not all individuals with this marker develop the disease, indicating that other genetic or environmental factors may also play a role.

Symptoms

Symptoms of birdshot chorioretinopathy can vary widely among individuals. Common symptoms include blurred vision, floaters, night blindness, and loss of color vision. In some cases, the disease may also cause pain or redness in the eye. However, many individuals with birdshot chorioretinopathy do not experience any symptoms in the early stages of the disease.

Diagnosis

Diagnosis of birdshot chorioretinopathy is typically based on a combination of clinical findings and imaging studies. The characteristic "birdshot" pattern of lesions can often be seen on fundus photography or fluorescein angiography. In some cases, optical coherence tomography (OCT) may also be used to assess the extent of retinal damage.

Treatment

There is currently no cure for birdshot chorioretinopathy, and treatment is primarily aimed at managing symptoms and preventing further vision loss. This may involve the use of corticosteroids or other immunosuppressive drugs. Regular follow-up with an ophthalmologist is also important to monitor for potential complications, such as cataract or glaucoma.

Prognosis

The prognosis for individuals with birdshot chorioretinopathy can vary widely. Some individuals may experience only mild vision loss, while others may progress to severe vision loss or blindness. Early detection and treatment can help to slow the progression of the disease and improve quality of life.

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