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Wilmer Eye Institute

Pediatric Ophthalmology and Adult Strabismus

Dr. Michael Repka with child patient

Wilmer's Division of Pediatric Ophthalmology and Adult Strabismus treats the full spectrum of children's vision problems.

Our specialists are among the top experts in their field and have advanced training in strabismus (both pediatric and adult), amblyopia (lazy eye), congenital and pediatric cataracts, retinopathy of prematurity, pediatric glaucoma and pediatric neuro-ophthalmologic disorders.

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410-955-5080

Conditions We Treat

Wilmer's Division of Pediatric Ophthalmology and Adult Strabismus provides expert clinical care for eye diseases and conditions including:
Learn about our research

Dream Team 

The pediatric glaucoma service at the Wilmer Eye Institute, Johns Hopkins Medicine, comprises four subspecialists, each of whom brings their unique training, research and clinical experience to target glaucoma in infants and children. These exceptional individuals work in collaboration with genetic counselors, nurses, anesthesiologists, pediatricians and family members to provide top-of-the-line care from newborns on up.

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Woman holds a young girl, who reaches toward a stuffed bunny toy

Our Team

Chief, Pediatric Ophthalmology and Adult Strabismus

Michael Xavier Repka, MD MBA

  • Vice Chair for Clinical Practice, Wilmer Eye Institute
  • Professor of Ophthalmology

Expertise: Pediatric Ophthalmology, Ophthalmology

Providers by Location

The Johns Hopkins Hospital

  • Megan Collins, MD MPH

    • Allan and Claire Jensen Professor of Ophthalmology
    • Associate Professor of Ophthalmology

    Expertise: Pediatric Ophthalmology, Ophthalmology

  • Jefferson Doyle, MD PhD MHS

    • Assistant Professor of Ophthalmology

    Expertise: Pediatric Ophthalmology, Ophthalmology

  • David Lee Guyton, MD

    • Zanvyl Krieger Professor of Pediatric Ophthalmology
    • Professor of Ophthalmology

    Expertise: Strabismus, Pediatric Ophthalmology, Ophthalmology

  • Courtney L. Kraus, MD

    • Knights Templar Eye Foundation Professor of Ophthalmology
    • Associate Professor of Ophthalmology

    Expertise: Pediatric Glaucoma, Pediatric Ophthalmology, Ophthalmology

  • Edward Kuwera, MD

    • Fellowship Program Director - Pediatric Ophthalmology & Adult Strabismus
    • Assistant Professor of Ophthalmology

    Expertise: Pediatric Ophthalmology, Ophthalmology

  • Michael Xavier Repka, MD MBA

    • Vice Chair for Clinical Practice, Wilmer Eye Institute
    • Professor of Ophthalmology

    Expertise: Pediatric Ophthalmology, Ophthalmology

  • Cody Richardson, MD

    • Assistant Professor of Ophthalmology

    Expertise: Pediatric Ophthalmology, Ophthalmology

  • Bo Wang, MD PhD

    • Assistant Professor of Ophthalmology

    Expertise: Pediatric Ophthalmology, Ophthalmology

Wilmer - Water's Edge

Edward Kuwera, MD

  • Fellowship Program Director - Pediatric Ophthalmology & Adult Strabismus
  • Assistant Professor of Ophthalmology

Expertise: Pediatric Ophthalmology, Ophthalmology

Wilmer - Bethesda

Wilmer - Columbia

Wilmer - Green Spring Station - Lutherville

Wilmer - Frederick

Katharine Funari, OD MPH

  • Optometrist

Expertise: Pediatric Optometry, Optometry

Primary Location: Johns Hopkins Health Care & Surgery Center — Bethesda, Bethesda, MD

Wilmer - Odenton

Eleanor Min, OD

Expertise: Pediatric Optometry, Optometry, Comprehensive Ophthalmology

Primary Location: Howard County Medical Pavilion, Columbia, MD

We are committed to the eye health of children, when delivering care in our offices, studying how to expand service for children in our community, and improving clinical outcomes from research into treatments and novel instruments to detect problems early.

- Dr. Michael Repka,  Chief, Division of Pediatric Ophthalmology

Meet our Orthoptists

Orthoptic Department services include diagnostic tests and measurements on patients with disorders of binocular vision and/or visual function deficits.

Alex Christoff, BS, CO

Alex Christoff is an assistant professor of ophthalmology who has been an American Orthoptic Council-Certified orthoptist for 21 years, as well as a JCAHPO-Certified ophthalmic technician for over 30 years. He has devoted his professional career to the education of Wilmer's residents, fellows, orthoptic students, and ophthalmic technicians across the United States through over 200 lectures, posters and presentations. He was the 45th Richard G. Scobee Memorial Lecturer for the American Association of Certified Orthoptists (AACO) in 2014 and is the current president.
alexander christoff

Xiaonong Liu, MSc, CO, COMT

Xiaonong Liu specializes in the assessment and treatment of children and adult patients with amblyopia, strabismus, diplopia, and eye muscle disorders. She graduated from Suzhou University School of Medicine, then trained and worked as an ophthalmologist in a Suzhou-affiliated teaching hospital. She received a master science degree from State University of New York, School of Optometry, and completed orthoptic training at the University of Florida. She has been an American Orthoptic Council-certified orthoptist since 1999, as well as a JCAHPO-Certified ophthalmic medical technologist since 1998. She started her orthoptist career with University of Maryland and later joined pediatric ophthalmology department at Wilmer Eye Institute, Johns Hopkins University School of Medicine in 2001.
xiaonong liu

Jana Mattheu, CO, COMT

Jana Mattheu is a certified orthoptist and certified ophthalmic medical technologist. She specializes in both pediatric and adult strabismus and binocular vision. Mrs. Mattheu has nearly 30 years of experience in the field - in both academic and private practice - totaling 10 years with the Wilmer Eye Institute. In 2019, she was a recipient of the Service Star of Excellence award from the Johns Hopkins Medical Institute. Prior to her orthoptic education at the University of Florida, Mrs. Mattheu worked in opticianry. This experience helped her in understanding the optical principles of refracting and crafting lenses, helping to fit patients with complicated spectacle prescriptions, and utilizing prisms to help restore binocular vision. Over the years, Jana has lectured at both regional and national Academy meetings to her peers. She enjoys spending time working one-on-one in clinic educating resident physicians and sharing her tricks to excel in the pediatric and strabismus ophthalmologic exams.
jana mattheu


Congenital Glaucoma | Bernie’s Story

When baby Bernie was born, her parents knew right away that something was wrong with her eyes. At Wilmer Eye Institute, they found experts on the cutting edge of research and clinical care — specialists who spoke the words they longed to hear: “We can help her.”

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