Terrien marginal degeneration is a rare, progressive eye disorder that affects the peripheral cornea. It is characterized by thinning of the peripheral cornea, which can lead to vision loss. Symptoms include blurred vision, glare, and halos around lights. Treatment typically involves the use of special contact lenses or corneal transplantation.

The most common symptom of Terrien marginal Degeneration is a gradual loss of vision in the peripheral (side) vision. Other symptoms may include:

• Blurring of vision

• Difficulty seeing in dim light

• Difficulty recognizing faces

• Difficulty reading

• Difficulty driving at night

• Difficulty recognizing objects in the peripheral vision

• Difficulty seeing in bright light

• Difficulty seeing colors

• Difficulty seeing contrast

• Difficulty seeing in the dark

• Difficulty seeing in the distance

• Difficulty seeing in the near vision

• Difficulty seeing in the peripheral vision

• Difficulty seeing in the central vision

• Difficulty seeing in the far vision

• Difficulty seeing in the intermediate vision

• Difficulty seeing in the near vision

• Difficulty seeing in the far vision

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The exact cause of Terrien marginal degeneration is unknown, but it is believed to be related to aging, genetics, and environmental factors. Possible causes include:

1. Aging: As people age, the collagen fibers in the cornea become weaker and more prone to damage.

2. Genetics: Some people may be genetically predisposed to developing Terrien marginal degeneration.

3. Environmental factors: Exposure to ultraviolet (UV) light, certain medications, and contact lens wear may increase the risk of developing Terrien marginal degeneration.

1. Eyeglasses or contact lenses: Eyeglasses or contact lenses can help improve vision in people with Terrien marginal degeneration.

2. Corneal transplant: A corneal transplant may be recommended if the cornea has become severely scarred or thinned.

3. Intacs: Intacs are tiny plastic rings that are surgically implanted in the cornea to help reshape it and improve vision.

4. Phototherapeutic keratectomy (PTK): PTK is a procedure that uses a laser to remove the scarred or thinned tissue from the cornea.

5. Corneal collagen cross-linking: This procedure uses ultraviolet light and a special solution to strengthen the cornea and reduce the risk of further thinning.

6. Artificial tears: Artificial tears can

1. Age: Terrien marginal degeneration is most commonly seen in individuals over the age of 40.

2. Gender: Men are more likely to develop Terrien marginal degeneration than women.

3. Genetics: Individuals with a family history of Terrien marginal degeneration are more likely to develop the condition.

4. Sun exposure: Prolonged exposure to ultraviolet (UV) radiation from the sun can increase the risk of developing Terrien marginal degeneration.

5. Certain medications: Certain medications, such as corticosteroids, can increase the risk of developing Terrien marginal degeneration.

6. Systemic diseases: Certain systemic diseases, such as diabetes, can increase the risk of developing Terrien marginal degeneration.

Yes, there is a medication available for Terrien marginal degeneration. The medication is called Eylea (aflibercept) and it is an injectable medication that is used to treat vision loss caused by Terrien marginal degeneration. It is administered by an ophthalmologist and works by blocking the growth of abnormal blood vessels in the eye.