Our Staff

Charles S. McCash, M.D.

Charles McCash, M.D. is the founder of Children’s Eye Center of South Texas, P.A. Dr. McCash is originally from Texarkana, Texas, and received his undergraduate education at Texas Christian University in Fort Worth, Texas. After graduating from the University of Texas Southwestern Medical Center in Dallas, Texas, he performed his internship at Parkland Hospital in Dallas, and his residency in … Read More

Claire Castleberry Hennessey, C.O.

Claire, originally from Lufkin, Texas, graduated with a Bachelor of Science degree in Community Health from Texas A&M University. Upon graduation, she was accepted into the Orthoptic Fellowship program at Washington University School of Medicine in St. Louis, Missouri. There, Claire completed a two-year master’s level training and successfully passed a series of board examinations to receive her certification in … Read More

Keith M. Williams, OD

Dr. Williams was born and raised in Texas. He attended Texas A&M University at College Station where he graduated in 1996 with a Bachelors Degree in Biomedical Science. He then enrolled at the University of Houston, College of Optometry where he graduated Magna Cum Laude with an OD in 2001. He completed his rotations at St. Joseph Hospital in Houston … Read More