Bin Guan is a Medical Genetics provider in Bethesda, Maryland. Dr. Guan is rated as an Advanced provider by MediFind in the treatment of Coloboma of Iris. His top areas of expertise are Coloboma, Micropthalmia Associated with Colobomatous Cyst, Microphthalmia, Coloboma of Iris, and Parathyroidectomy.

Dr. Couser obtained his bachelor’s degree from the University of Virginia and his Medical Doctorate from the Virginia Commonwealth University School of Medicine (VCU SOM). Dr. Couser’s ophthalmology residency was completed at Howard University where he served as co-chief resident in the last year of his residency. He received fellowship training in pediatric ophthalmology and adult strabismus at Emory University. Dr. Couser received a master’s degree in biotechnology from the Johns Hopkins University and completed a residency in clinical genetics at the University of North Carolina at Chapel Hill. He is one of only a few individuals currently board-certified by both the American Board of Ophthalmology and the American Board of Medical Genetics and Genomics. CV https://www.hopkinsmedicine.org/-/media/wilmer/documents/cvs/couser-cv Research Summary My primary research focus involves the identification and management of genetic eye diseases including rare inherited disorders affecting the eyes. Research and scholarly activities have been an integral component of my career path. I have been the principal investigator on 10 clinical trial/IRB studies and a co-investigator on others, participated with several committees or advisory panels related to research activities. I have been credited with over 120 book chapter, journal article and abstract publications. In addition, I served as the primary author/sole editor for a textbook titled Ophthalmic Genetic Diseases: A Quick Reference Guide to the Eye and External Ocular Adnexa Abnormalities, 1st Edition, published by Elsevier in 2018, which is one of only a few textbooks published in this subject area. I also served as a grant review panelist for the National Eye Institute Career Development Awards. Selected Publications *Couser NL, Masood MM, Strande NT, Foreman AKM, Crooks K, Weck KE, Lu M, Wilhelmsen KC, Roche M, Evans JP, Berg JS, Powell CM. 2015. The phenotype of multiple congenital anomalies- hypotonia-seizures syndrome 1: Report and review. Am J Med Genet Part A 9999A:1–6 *Couser NL, Lambert SR. Botulinum toxin: A treatment of consecutive esotropia in children. Strabismus 2012; 20(4):158-161 Couser NL, Lenhart PD, Hutchinson AK. Augmented Hummelsheim procedure to treat complete abducens nerve palsy. J AAPOS 2012;16(4):331-5 *Natario L. Couser, Maheer M. Masood, Arthur S. Aylsworth, and Roger E. Stevenson. Ocular manifestations in the X-linked intellectual disability syndromes. Ophthalmic Genet. 2017, Jan 23:1-12 *Couser NL, Brooks BP, Drack AV, Shankar SP. The evolving role of genetics in ophthalmology. Ophthalmic Genet. 2021 Jan 12:1-4. doi: 10.1080/13816810.2020.1868011. Dr. Couser is rated as an Experienced provider by MediFind in the treatment of Coloboma of Iris. His top areas of expertise are Epicanthal Folds, Strabismus, Brown Syndrome, and Hypotonia.

Lan Chang is an Ophthalmologist in Kensington, Maryland. Dr. Chang is rated as an Experienced provider by MediFind in the treatment of Coloboma of Iris. Her top areas of expertise are Strabismus, Esotropia, Amblyopia, and Epicanthal Folds.

Kimberly Neutze-Heaney is an Ophthalmologist in Baltimore, Maryland. Dr. Neutze-Heaney is rated as an Experienced provider by MediFind in the treatment of Coloboma of Iris. Her top areas of expertise are Amblyopia, Strabismus, Astigmatism, and Nearsightedness. Dr. Neutze-Heaney is currently accepting new patients.

Gonzalo Vicente is an Ophthalmologist and a Pediatrics provider in Chevy Chase, Maryland. Dr. Vicente is rated as an Experienced provider by MediFind in the treatment of Coloboma of Iris. His top areas of expertise are Strabismus, Esotropia, Amblyopia, and Isolated Duane Retraction Syndrome. Dr. Vicente is currently accepting new patients.

Arturo Betancourt is an Ophthalmologist in Glen Burnie, Maryland. Dr. Betancourt is rated as an Experienced provider by MediFind in the treatment of Coloboma of Iris. His top areas of expertise are Cataract, Dry Eye Syndrome, Glaucoma, Blepharitis, and Cataract Removal. Dr. Betancourt is currently accepting new patients.

Mark Preslan is an Ophthalmologist in Glen Burnie, Maryland. Dr. Preslan is rated as an Experienced provider by MediFind in the treatment of Coloboma of Iris. His top areas of expertise are Strabismus, Amblyopia, X-Linked Infantile Nystagmus, and Esotropia. Dr. Preslan is currently accepting new patients.

Jonathan Solomon is an Ophthalmologist in Bowie, Maryland. Dr. Solomon is rated as an Experienced provider by MediFind in the treatment of Coloboma of Iris. His top areas of expertise are Astigmatism, Cataract, Dry Eye Syndrome, Cataract Removal, and Iridectomy. Dr. Solomon is currently accepting new patients.

Alisa Thavikulwat is an Ophthalmologist in Glenn Dale, Maryland. Dr. Thavikulwat is rated as an Experienced provider by MediFind in the treatment of Coloboma of Iris. Her top areas of expertise are Geographic Atrophy, Age-Related Macular Degeneration (ARMD), Von Hippel-Lindau (VHL) Syndrome, Late-Onset Retinal Degeneration, and Cataract Removal. Dr. Thavikulwat is currently accepting new patients.

Alan Malouf is an Ophthalmologist in Columbia, Maryland. Dr. Malouf is rated as an Experienced provider by MediFind in the treatment of Coloboma of Iris. His top areas of expertise are Dry Eye Syndrome, Cataract, Glaucoma, and Allergic Conjunctivitis. Dr. Malouf is currently accepting new patients.

Janet Alexander is an Ophthalmologist and a General Surgeon in Baltimore, Maryland. Dr. Alexander is rated as an Experienced provider by MediFind in the treatment of Coloboma of Iris. Her top areas of expertise are Congenital Cataract, Retinopathy of Prematurity, Amblyopia, Trabeculectomy, and Cataract Removal. Dr. Alexander is currently accepting new patients.

Jana Friedman is an Ophthalmologist in Baltimore, Maryland. Dr. Friedman is rated as an Experienced provider by MediFind in the treatment of Coloboma of Iris. Her top areas of expertise are Strabismus, Amblyopia, Esotropia, and Epicanthal Folds. Dr. Friedman is currently accepting new patients.

Sunil Bellur is an Ophthalmologist in Greenbelt, Maryland. Dr. Bellur is rated as an Experienced provider by MediFind in the treatment of Coloboma of Iris. His top areas of expertise are Uveitis, Geographic Atrophy, Late-Onset Retinal Degeneration, Age-Related Macular Degeneration (ARMD), and Vitrectomy. Dr. Bellur is currently accepting new patients.

Daniel Sarezky is an Ophthalmologist in Rockville, Maryland. Dr. Sarezky is rated as an Experienced provider by MediFind in the treatment of Coloboma of Iris. His top areas of expertise are Glaucoma, Blepharitis, Cataract, Vitrectomy, and Corneal Transplant. Dr. Sarezky is currently accepting new patients.

Allison Jensen is an Ophthalmologist in Baltimore, Maryland. Dr. Jensen is rated as an Experienced provider by MediFind in the treatment of Coloboma of Iris. Her top areas of expertise are Strabismus, Amblyopia, Epicanthal Folds, and Esotropia. Dr. Jensen is currently accepting new patients.

Samantha Williamson is an Ophthalmologist in Annapolis, Maryland. Dr. Williamson is rated as an Experienced provider by MediFind in the treatment of Coloboma of Iris. Her top areas of expertise are Cataract, Presbyopia, Dry Eye Syndrome, and Astigmatism. Dr. Williamson is currently accepting new patients.

Michael Summerfield is an Ophthalmologist in Greenbelt, Maryland. Dr. Summerfield is rated as an Experienced provider by MediFind in the treatment of Coloboma of Iris. His top areas of expertise are Cataract, Glaucoma, Dry Eye Syndrome, and Neuroretinitis. Dr. Summerfield is currently accepting new patients.

Pim Suwannarat is a Medical Genetics specialist and a Pediatrics provider in Suitland, Maryland. Dr. Suwannarat is rated as an Experienced provider by MediFind in the treatment of Coloboma of Iris. Her top areas of expertise are Triple X Syndrome, Classic Galactosemia, Ehlers-Danlos Syndrome (EDS), and Chromosome 10q Deletion. Dr. Suwannarat is currently accepting new patients.

Shazia Ahmed is an Ophthalmologist in Camp Springs, Maryland. Dr. Ahmed is rated as an Experienced provider by MediFind in the treatment of Coloboma of Iris. Her top areas of expertise are Cataract, Meibomianitis, Astigmatism, and Presbyopia. Dr. Ahmed is currently accepting new patients.

Joseph Mekhail is an Ophthalmologist in Cumberland, Maryland. Dr. Mekhail is rated as an Experienced provider by MediFind in the treatment of Coloboma of Iris. His top areas of expertise are Keratoconus, Cataract, Meibomianitis, Pterygium, and Corneal Transplant. Dr. Mekhail is currently accepting new patients.