Exudative retinopathy familial, X linked, recessive

Exudative Retinopathy Familial, X-Linked, Recessive (ERFXLR) is a rare genetic disorder affecting the retina of the eye, leading to vision impairment or loss. This condition is characterized by the exudation or leakage of fluid from the retinal vessels, causing retinal detachment and subsequent vision problems. ERFXLR is inherited in an X-linked recessive pattern, meaning the gene responsible for the condition is located on the X chromosome, and males are more frequently and severely affected than females.

Causes

ERFXLR is caused by mutations in a gene on the X chromosome. This gene is crucial for the normal development and maintenance of the retinal blood vessels. Mutations in this gene lead to abnormal vessel formation and integrity, resulting in leakage of fluid under the retina. The exact gene and the mechanism by which these mutations cause the disease are subjects of ongoing research.

Symptoms

The primary symptom of ERFXLR is the gradual loss of vision, resulting from the accumulation of fluid in the retina and subsequent retinal detachment. Other symptoms may include:

• Visual impairment
• Floaters or flashes of light
• Distorted vision (metamorphopsia)
• Night blindness
• Peripheral vision loss

Diagnosis

Diagnosis of ERFXLR involves a comprehensive eye examination, including:

• Visual acuity test
• Fundus examination
• Optical coherence tomography (OCT) to detect fluid accumulation
• Fluorescein angiography to visualize blood flow and leakage in the retina

Genetic testing may also be conducted to identify mutations in the gene associated with ERFXLR.

Treatment

There is currently no cure for ERFXLR. Treatment focuses on managing symptoms and preventing further vision loss. Options may include:

• Laser photocoagulation to seal leaking vessels
• Cryotherapy for retinal tears
• Vitrectomy to remove vitreous gel and replace it with a saline solution
• Pneumatic retinopexy to reattach the retina

Patients may also require low vision aids and rehabilitation services to manage the impact of vision loss on daily life.

Prognosis

The prognosis for individuals with ERFXLR varies depending on the severity of the condition and the effectiveness of treatment in managing symptoms. Early detection and treatment are crucial for preserving vision.

Epidemiology

ERFXLR is a rare condition, though the exact prevalence is unknown. It affects males more frequently due to its X-linked recessive inheritance pattern.

Exudative retinopathy familial, X linked, recessive Resources
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