Drs. Biros, Coster, and Abrams are board certified in ophthalmology and able to provide extensive diagnosis and treatment of inherited, acquired or traumatic conditions involving the eyelids, cornea, iris, lens, retina, optic nerve and orbit.

Examinations are provided on a wide variety of species using direct and indirect ophthalmoscopy, slit-lamp biomicroscopy, Schirmer tear testing, topical fluorescein staining, tonometry, gonioscopy, ocular ultrasonography, CT, MRI, and electroretinography (to detect retinal degeneration).

Surgical correction of most ocular disorders is available, including but not limited to:

  • Cataract surgery with lens implantation, and removal of luxated lenses
  • Eyelid disorders such as tumor removal, entropion, laceration, and cherry eye repair,
  • Cryosurgery for distichia or other hair growth abnormalities,
  • Corneo-conjunctival surgery for corneal ulcers, feline sequestrum, lacerations, dermoids, and foreign bodies,
  • Laser cyclophotocoagulation therapy for glaucoma and prophylactic retinopexy for cases at risk of retinal detachment,
  • Ocular prosthetics, or gentamycin injections for glaucoma,
  • And enucleation for tumors of the eye

What is a Veterinary Ophthalmologist?

Case Examples:

Visit Dr. Coster’s Facebook page for more Ophthalmology information and tips.


Angell Animal Medical Center
350 S. Huntington Ave
Boston, MA 02130

Phone: 617-541-5095
Fax: 617-989-1647


Monday 8:00am – 5:00pm (extended evening hours on select Mondays)
Tuesday 8:00am – 5:00pm
Wednesday 8:00am – 5:00pm
Thursday 8:00am – 5:00pm (extended evening hours on select Thursdays)
Friday 8:00am – 5:00pm

Ophthalmology Team

Ophthalmology Team

Meet the Ophthalmology Team

Click here



If you have any questions please contact Sarah Estan at the:

Referral line: 617-541-5095, or
Referral fax: 617-989-1647.

Fill out the online form

Our Services

  • Diagnostic, therapeutic, and surgical services using advanced techniques, state-of-the-art equipment and up-to-date knowledge.
  • Complete ophthalmic examinations include slit-lamp biomicroscopy, indirect ophthalmoscopy, and standard in-office diagnostic tests including tonometry and gonioscopy.
  • Emergency and critical care service is available 24 hours, 7 days a week.
  • Urgent care consultations with ophthalmology are available, often the same day.
  • Available ophthalmic specialty services include cataract surgery with intraocular lens implantation, ocular ultrasound, electroretinography, cryosurgery, glaucoma surgery including laser cyclophotocoagulation, corneal surgery including grafting, and eyelid surgery.
  • CERF examinations are available for breeding dogs.
  • Board-certified specialists in internal medicine, radiology, cardiology, oncology, surgery, dermatology, dentistry, pathology, and exotic animal medicine assist in providing in-depth case management.
  • 24-hour Intensive Care Unit for patients needing intensive ocular therapy.
  • In-house CT and MRI scanners, specifically-designed for veterinary patients, are available Monday through Friday.
Call Now Button