Physicians

David M. Armesto, M.D., F.A.C.S.

Dr. David  Armesto,  is a Refractive Surgery specialist and received fellowship training in Cornea/External Disease and Refractive Surgery at the University of Texas.  Dr. Armesto has performed all aspects of refractive surgery since 1990, and performed the first LASIK procedure in Central Pennsylvania in 1997.  As a fellowship-trained corneal specialist, Dr. Armesto has extensive experience in the care of patients desiring surgery as an alternative to glasses and contact lenses.

Dr. Armesto has been practicing in the Central Pennsylvania area since 1992.  He is certified by the American Board of Ophthalmology and is a member of the American Academy of Ophthalmology and the American Society of Cataract and Refractive Surgeons as well as Fellow, American College of Surgeons . 

Dr. Armesto resides in the Mechanicsburg area with his wife and two sons.

Mary Ann Bonomo Hosey, O.D. and Troy Hosey, O.D.

Dr. Mary Ann Hosey is from West Pittston, Pennsylvania and did her undergraduate studies at Scranton University.  She received a Bachelor of Science in Visual Sciences in 1988 and a Doctorate in Optometry in 1991 from the Pennsylvania College of Optometry.  She is board certified by both the National Board of Examiners in Optometry and the Pennsylvania Board of Optometry.

Dr. Mary Hosey's practice includes family eye care, contact lenses, pre- and postoperative cataract and refractive surgery evaluations as well as glaucoma management.  She specializes in those hard-to-fit contact lens patients including patients with corneal diseases such as keratoconus and post corneal transplant patients. 

Dr. Troy Hosey is from Sun Prairie, Wisconsin and did his undergraduate studies at the University of Wisconsin at Madison.  He received a Bachelor of Science degree in Medical Technology in 1989.  He attended the Pennsylvania College of Optometry in Philadelphia, where he received a Bachelor of Science in Visual Sciences and his Optometric degree in 1993.  He is board certified by both the National Board of Examiners in Optometry and the Pennsylvania Board of Optometry.

Dr. Hosey performs comprehensive eye care for patients of all ages, with a special interest in the school-aged group.  Along with routine eye exams, Dr. Hosey is involved in the co-management of pre- and postoperative procedures, including cataract surgery, refractive surgery and glaucoma.

Dr. Mary Ann Bonomo-Hosey and Dr. Troy Hosey are the proud parents of  two daughters.

 David I. Silbert, M.D., F.A.A.P.

PEDIATRIC OPHTHALMOLOGY AND STRABISMUS SPECIALIST OCULOPLASTICS, RECONSTRUCTIVE, AND COSMETIC EYELID SURGERY SPECIALIST

David I. Silbert, MD, FAAP graduated from Wesleyan University in Middletown, Connecticut in 1984. He completed his medical training at Case Western Reserve University School of Medicine in Cleveland, Ohio in 1989, with an area of concentration in clinical decision analysis. 

 Dr. Silbert completed an internship in internal medicine at the Washington Hospital Center in 1990, and an ophthalmology residency at Georgetown University Hospital, Center for Sight, Washington, DC in 1993.  This was followed by a fellowship in oculoplastic and orbital surgery at Wills Eye Hospital in 1994, and a second fellowship in pediatric ophthalmology and strabismus at St. Christopher’s Hospital for Children, Holy Redeemer Hospital and Wills Eye Hospital, finished in 1995.

 Dr. Silbert specializes in the diagnosis and treatment of pediatric and adult strabismus, amblyopia, congenital cataracts, nasolacrimal obstruction and other pediatric eye diseases.  He also specializes in cosmetic and reconstructive eyelid surgery, as well as orbital surgery and has extensive experience using a laser for blepharoplasty and the removal of wrinkles. 

 Dr. Silbert has been involved as an investigator for the Balloon Catheter Technique to improve tearing.  He has also been an investigator for the Amblyopia Treatment Studies, national studies looking at lazy eye.  He has been invited to lecture on “The Use of the Photoscreener to Detect Amblyopia” at national meetings.  Dr. Silbert is a Diplomate of the American Board of Ophthalmology and is a full member of the American Association for Pediatric Ophthalmology and Strabismus (AAPOS).  He has also been elected a fellow of the American Academy of Pediatrics.  With his full membership in the American Association for Pediatric Ophthalmology and Strabismus (AAPOS) and fellowship in the American Academy of Pediatrics, Dr. Silbert became the first pediatric ophthalmologist in Lancaster County to offer such high credentials in the care of his young patients.