Secondary glaucoma

Secondary Glaucoma is a form of glaucoma that occurs as a secondary condition to a variety of ocular and systemic conditions. Unlike Primary Glaucoma, which arises due to intrinsic factors within the eye, Secondary Glaucoma is the result of other diseases or injuries that indirectly increase the intraocular pressure (IOP), leading to optic nerve damage and vision loss. This article provides an overview of Secondary Glaucoma, including its causes, symptoms, diagnosis, and treatment options.

Causes

Secondary Glaucoma can be caused by a wide range of conditions, including but not limited to:

• Uveitis - inflammation of the uvea, leading to increased eye pressure.
• Trauma to the eye - such as blunt or penetrating injuries that disrupt the eye's normal fluid outflow.
• Pseudoexfoliation Syndrome - material deposits on the lens and drainage structures, impeding fluid outflow.
• Neovascular Glaucoma - new, abnormal blood vessels grow on the iris and drainage channels, blocking fluid outflow.
• Steroid-induced Glaucoma - prolonged use of corticosteroids leading to increased IOP.
• Pigment Dispersion Syndrome - pigment granules from the iris block the drainage angles.

Symptoms

The symptoms of Secondary Glaucoma can vary depending on the underlying cause but may include:

• Blurred vision
• Eye pain
• Headache
• Halos around lights
• Redness of the eye
• Decreased or cloudy vision

Diagnosis

Diagnosis of Secondary Glaucoma involves a comprehensive eye examination, including:

• Measurement of intraocular pressure (Tonometry)
• Examination of the drainage angle (Gonioscopy)
• Assessment of the optic nerve (Ophthalmoscopy)
• Visual field testing

Treatment

Treatment for Secondary Glaucoma aims to reduce intraocular pressure and prevent further damage to the optic nerve. Treatment options include:

• Medications - such as eye drops or oral medications to lower eye pressure.
• Laser Therapy - procedures like laser trabeculoplasty to improve drainage.
• Surgery - surgical interventions such as trabeculectomy or drainage implant surgery to create new pathways for fluid outflow.

Prevention and Management

Managing the underlying condition causing Secondary Glaucoma is crucial. Regular eye exams and monitoring are important for individuals at risk or those with conditions known to cause Secondary Glaucoma.

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