Dr. Crystal Sin Yi Cheung

Ophthalmology – Pediatric Eye Specialist

Boston, MA

Dr. Crystal Cheung is a pediatric ophthalmologist who cares for infants, children, and teens with both common and complex eye conditions. She completed ophthalmology residency at the University of Toronto and a fellowship in Pediatric Ophthalmology at Boston Children's Hospital and Mass Eye & Ear, where she also pursued additional training in pediatric uveitis. Dr. Cheung's clinical interests span strabismus, pediatric cataract and glaucoma, retinopathy of prematurity, corneal and anterior segment disorders in children, and vision issues related to neuro-ophthalmic and genetic conditions. She is a Lecturer in the Department of Ophthalmology & Vision Sciences at the University of Toronto and remains active in research and education. Her work includes peer-reviewed publications on pediatric uveitis management, imaging for sickle cell retinopathy screening, and surgical approaches in complex pediatric eyes. Families appreciate her gentle communication style, collaborative care with multidisciplinary teams, and focus on long-term visual development.

Dr. Maan Alkharashi

Ophthalmology – Pediatric Eye Specialist

Boston, MA

Maan Alkharashi, MD, cares for children and adults with strabismus and other alignment disorders at Boston Children’s Hospital. He evaluates double vision, complex motility problems, and thyroid eye disease–related strabismus, and offers both nonsurgical and surgical options, including techniques with adjustable sutures for precise alignment. He is committed to helping families understand diagnoses, timelines, and recovery so decisions feel confident and shared. Dr. Alkharashi completed ophthalmology residency at McGill University and a pediatric ophthalmology and strabismus fellowship at Boston Children’s Hospital, and he serves as a lecturer on ophthalmology at Harvard Medical School. His professional interests include complex strabismus from trauma and thyroid orbitopathy as well as inherited retinal degenerations such as Leber congenital amaurosis and choroideremia. He works closely with pediatricians, neurologists, and genetic counselors to create coordinated plans that support long-term visual development.