Terrien's Marginal Degeneration Treatment in Corona del Mar, California
Terrien's Marginal Degeneration — At a Glance
Severity & Type
When to See a Doctor
Schedule a comprehensive eye exam if you experience persistent symptoms.
Key Symptoms
- Gradually increasing astigmatism
- Blurred vision not fully correctable with glasses
- Peripheral corneal thinning (often superior)
- Fine vascularization at the thinning edge
- Usually painless and slowly progressive
Treatment Options
- Scleral Contact Lens Fitting
- Pentacam Corneal Tomography Monitoring
- Lamellar or Tectonic Corneal Grafting (advanced thinning)
- Spectacle Correction (early stages)
Terrien's marginal degeneration is a rare, slowly progressive, non-inflammatory thinning of the peripheral cornea, typically starting superiorly. It causes increasing against-the-rule astigmatism as the thinning progresses, making vision correction with standard glasses increasingly difficult. The peripheral thinning can eventually threaten corneal integrity. Scleral lenses are effective for vision correction, and Pentacam tomography is used to monitor progression.
Corona del Mar's coastal environment can influence how terrien's marginal degeneration presents and responds to treatment. Factors like UV exposure, wind, and marine air quality are considered in our evaluation and management approach.
Dr. Bonakdar on Terrien's Marginal Degeneration
Direct Answers from Dr. Bonakdar
Dr. Alexander Bonakdar at EyeCare Center of Orange County provides expert terrien's marginal degeneration diagnosis and treatment for patients in Corona del Mar and throughout Orange County. With over 35 years of clinical experience and advanced diagnostic technology, each patient receives a personalized treatment plan based on their specific condition severity and lifestyle needs.
What is Terrien's Marginal Degeneration?
Terrien's marginal degeneration is a rare, slowly progressive, non-inflammatory thinning of the peripheral cornea, typically starting superiorly. It causes increasing against-the-rule astigmatism as the thinning progresses, making vision correction with standard glasses increasingly difficult. The peripheral thinning can eventually threaten corneal integrity. Scleral lenses are effective for vision correction, and Pentacam tomography is used to monitor progression.
How is Terrien's Marginal Degeneration treated?
Treatment options include Scleral Contact Lens Fitting, Pentacam Corneal Tomography Monitoring, Lamellar or Tectonic Corneal Grafting (advanced thinning), Spectacle Correction (early stages). The best approach depends on your specific diagnosis, severity, and lifestyle needs.
What are the symptoms of Terrien's Marginal Degeneration?
Common symptoms include Gradually increasing astigmatism, Blurred vision not fully correctable with glasses, Peripheral corneal thinning (often superior), Fine vascularization at the thinning edge, Usually painless and slowly progressive. If you experience any of these, a comprehensive eye examination can determine the cause.
What are the symptoms of Terrien's Marginal Degeneration?
Corona del Mar residents may notice symptoms more acutely during outdoor activities—ocean glare, wind, and sand can amplify visual disturbances and discomfort:
- Gradually increasing astigmatism
- Blurred vision not fully correctable with glasses
- Peripheral corneal thinning (often superior)
- Fine vascularization at the thinning edge
- Usually painless and slowly progressive
How is Terrien's Marginal Degeneration treated?
For Corona del Mar's coastal residents, we consider your active outdoor lifestyle when recommending treatments—ensuring solutions work for beach activities, water sports, and sun exposure:
Terrien's Marginal Degeneration FAQs for Corona del Mar Patients
Common questions from Corona del Mar patients about our eye care services
Have more questions? Call us at (949) 323-3600
We don't take Medi-Cal
Terrien's Marginal Degeneration Care for Corona del Mar Residents
Corona del Mar patients seeking care for terrien's marginal degeneration benefit from our 35+ years of clinical experience and advanced diagnostic capabilities. Living in Corona del Mar's coastal environment adds unique considerations—UV exposure, wind, and salt air can influence both symptoms and treatment choices. We provide thorough evaluation, accurate diagnosis, and evidence-based treatment tailored to your individual needs. Whether your condition requires ongoing monitoring, medical therapy, or surgical co-management, our practice ensures continuity of care from diagnosis through recovery.
About Corona del Mar
Upscale coastal village with stunning beaches and boutique shopping
Population: 13,000+
Languages Spoken in Corona del Mar
Our practice serves the diverse Corona del Mar community. We provide care to patients who speak:
Eye Health Priorities for Corona del Mar
- UV damage and photokeratitis from ocean glare
- Pterygium (surfer's eye) from wind and sun exposure
- Dry eye from salt air and coastal winds
- Sports vision needs for water activities
Conveniently Located Near Corona del Mar Landmarks
Our Orange County practice is easily accessible for Corona del Mar patients living near:
Getting to Our Office from Corona del Mar
Corona del Mar patients typically reach our Santa Ana office via the 5 Freeway in approximately 20 minutes. Free on-site parking is available in our building.
801 N Tustin Ave, Ste 404, Santa Ana, CA 92705 — Get DirectionsCorona del Mar Neighborhoods We Serve
- CDM Village
- Big Canyon
- Harbor View Hills
Zip codes: 92625
Why Corona del Mar Patients Choose EyeCare Center for Terrien's Marginal Degeneration
Corneal Specialty Practice
Dr. Bonakdar has 35+ years treating corneal conditions including terrien's marginal degeneration, with advanced slit lamp and topography diagnostics.
Scleral Lens Expertise
Custom scleral and specialty contact lens fittings for irregular corneas, dry eye, and post-surgical rehabilitation.
Same-Day Urgent Visits
Corona del Mar patients with acute corneal symptoms can often be seen the same day for prompt diagnosis and treatment.
Coordinated Surgical Care
When corneal surgery is needed, we coordinate with top corneal surgeons and manage your complete pre- and post-operative care.

Your Terrien's Marginal Degeneration Specialist in Corona del Mar
Dr. Alexander Bonakdar is a California-licensed Optometrist (O.D.) with over 35 years of experience treating terrien's marginal degeneration and complex eye conditions. A graduate of the Illinois College of Optometry, he has helped over 10,000 patients achieve and maintain clear vision.
Patient Stories from Corona del Mar
See why your neighbors in Corona del Mar trust us with their vision.
Comprehensive Exam
"Not a fan of getting my eyes checked but the receptionist and Dr. were very nice and eased my anxiety."
Comprehensive Exam
"I came back for my yearly visit and had a great experience as always."
Schedule Your Terrien's Marginal Degeneration Consultation
Expert diagnosis and treatment for Corona del Mar and Orange County residents.
Related Conditions
Terrien's Marginal Degeneration Treatment in Nearby Cities
Also serving nearby Orange County cities
- Terrien's Marginal Degeneration in Harbor View
- Terrien's Marginal Degeneration in Balboa Island
- Terrien's Marginal Degeneration in Eastbluff
- Terrien's Marginal Degeneration in Dover Shores
- Terrien's Marginal Degeneration in Newport Coast
- Terrien's Marginal Degeneration in Newport Beach
- Terrien's Marginal Degeneration in Costa Mesa
- Terrien's Marginal Degeneration in University Hills