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Neuro-Ophthalmology·Chino Hills, San Bernardino County

Radiation Optic Neuropathy Treatment in Chino Hills, California

Medically reviewed by Dr. Alexander Bonakdar, O.D. · Updated February 2026

Radiation Optic Neuropathy (RON) is a devastating complication of radiation therapy to the head, orbit, or paranasal sinuses, causing irreversible vision loss. It typically occurs 6 months to 3 years after radiation exposure, when the total dose exceeds 50 Gy. The condition results from radiation-induced damage to the optic nerve vasculature, leading to ischemic injury and optic nerve atrophy.

Chino Hills patients experiencing radiation optic neuropathy benefit from our 35+ years of diagnostic experience and advanced imaging capabilities, ensuring accurate diagnosis and evidence-based treatment.

Dr. Bonakdar on Radiation Optic Neuropathy

Direct Answers from Dr. Bonakdar

Dr. Alexander Bonakdar at EyeCare Center of Orange County provides expert radiation optic neuropathy diagnosis and treatment for patients in Chino Hills 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 Radiation Optic Neuropathy?

Radiation Optic Neuropathy (RON) is a devastating complication of radiation therapy to the head, orbit, or paranasal sinuses, causing irreversible vision loss. It typically occurs 6 months to 3 years after radiation exposure, when the total dose exceeds 50 Gy. The condition results from radiation-induced damage to the optic nerve vasculature, leading to ischemic injury and optic nerve atrophy.

How is Radiation Optic Neuropathy treated?

Treatment options include Hyperbaric oxygen therapy (if caught early), Systemic corticosteroids, Anti-VEGF therapy (bevacizumab) under investigation, Pentoxifylline and vitamin E combination. The best approach depends on your specific diagnosis, severity, and lifestyle needs.

What are the symptoms of Radiation Optic Neuropathy?

Common symptoms include Progressive painless vision loss months to years after radiation, May be unilateral or bilateral, Visual field defects, Decreased color vision, Afferent pupillary defect. If you experience any of these, a comprehensive eye examination can determine the cause.

What are the symptoms of Radiation Optic Neuropathy?

Chino Hills residents experiencing any combination of the following symptoms should schedule a comprehensive evaluation:

  • Progressive painless vision loss months to years after radiation
  • May be unilateral or bilateral
  • Visual field defects
  • Decreased color vision
  • Afferent pupillary defect
  • Optic disc pallor or atrophy
  • Often no improvement with treatment

How is Radiation Optic Neuropathy treated?

Treatment for Chino Hills patients is tailored to the specific type and severity of their condition. Options available at our practice include:

Hyperbaric oxygen therapy (if caught early)
Systemic corticosteroids
Anti-VEGF therapy (bevacizumab) under investigation
Pentoxifylline and vitamin E combination
Low vision rehabilitation
Prevention through careful radiation planning
Fractionation of radiation doses

Radiation Optic Neuropathy FAQs for Chino Hills Patients

Common questions from Chino Hills patients about our eye care services

At EyeCare Center of Orange County, we diagnose radiation optic neuropathy using advanced diagnostic equipment including corneal topography, OCT imaging, and comprehensive eye examinations. Chino Hills patients receive the same comprehensive diagnostic technology used at major academic eye centers, right here in Orange County.
We offer comprehensive treatment options for radiation optic neuropathy including specialty contact lenses, medical therapy, and advanced procedures. Dr. Bonakdar personalizes each Chino Hills patient's treatment plan based on condition severity, lifestyle demands, and long-term visual goals.
Call (714) 558-1182 or book online. Initial consultations take 60-90 minutes and include comprehensive testing. Our centrally located Orange County practice is easily accessible from Chino Hills, with appointment times designed to fit your schedule.
Yes, we accept most major vision and medical insurance plans including VSP, EyeMed, Medicare, and Medi-Cal for radiation optic neuropathy diagnosis and treatment. We verify your coverage and discuss costs before any procedures.

Have more questions? Call us at (714) 558-1182

Radiation Optic Neuropathy Care for Chino Hills Residents

Chino Hills patients seeking care for radiation optic neuropathy benefit from our 35+ years of clinical experience and advanced diagnostic capabilities. Our centrally located Orange County practice is easily accessible for Chino Hills residents, with flexible scheduling to accommodate your needs. 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 Chino Hills

Affluent hillside community with excellent schools and Asian-American population

Population: 78,000+

Affluent familiesAsian-American communityProfessionalsOutdoor enthusiasts

Languages Spoken in Chino Hills

Our practice serves the diverse Chino Hills community. We provide care to patients who speak:

EnglishMandarinKoreanSpanishTagalog

Eye Health Priorities for Chino Hills

  • Comprehensive eye examinations
  • Contact lens fittings
  • Glasses and eyewear
  • Eye disease treatment
  • Emergency eye care

Conveniently Located Near Chino Hills Landmarks

Our Orange County practice is easily accessible for Chino Hills patients living near:

Chino Hills State Park
The Shoppes at Chino Hills
Vellano Country Club
Los Serranos Country Club
Ayala High School

Getting to Our Office from Chino Hills

Drive Time
30 min
Primary Route
57 Freeway
Distance
18.5 mi

Chino Hills patients typically reach our Santa Ana office via the 57 Freeway in approximately 30 minutes. Free on-site parking is available in our building.

801 N Tustin Ave, Ste 404, Santa Ana, CA 92705 — Get Directions

Chino Hills Neighborhoods We Serve

  • Vellano
  • Los Serranos
  • Butterfield Ranch
  • Western Hills

Zip codes: 91709

Don't Delay Treatment for Radiation Optic Neuropathy

Without timely care, radiation optic neuropathy can lead to lasting visual impairment. Early diagnosis and treatment offer the best outcomes for Chino Hills patients.

Why Chino Hills Patients Choose EyeCare Center for Radiation Optic Neuropathy

Neuro-Ophthalmic Assessment

Thorough evaluation of radiation optic neuropathy including pupil testing, motility assessment, and visual field analysis.

Urgent Neuroimaging Coordination

When Chino Hills patients present with concerning neuro-ophthalmic signs, we expedite MRI and CT referrals.

Multidisciplinary Approach

We collaborate with neurologists, neurosurgeons, and neuroradiologists for conditions that bridge eye and brain.

35+ Years of Clinical Judgment

Distinguishing urgent neuro-ophthalmic findings from benign variants requires experience—Dr. Bonakdar has been making these distinctions since 1991.

Dr. Alexander Bonakdar - Board Certified Ophthalmologist

Your Radiation Optic Neuropathy Specialist in Chino Hills

Dr. Alexander Bonakdar is a board-certified ophthalmologist with over 35 years of experience treating radiation optic neuropathy and complex eye conditions. Trained at the #1-ranked Bascom Palmer Eye Institute, he has helped over 10,000 patients achieve and maintain clear vision.

35+ Years10,000+ PatientsBascom Palmer
Learn more about Dr. Bonakdar →

Patient Stories from Chino Hills

See why your neighbors in Chino Hills 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."

emily garcia
Santa Ana, CA

Comprehensive Exam

"I came back for my yearly visit and had a great experience as always."

Eduardo arias
Santa Ana, CA

Schedule Your Radiation Optic Neuropathy Consultation

Expert diagnosis and treatment for Chino Hills and San Bernardino County residents.