
Ophthalmology
What we do
The Ophthalmology Service focuses on the diagnosis and treatment of ocular diseases in dogs, cats and other companion animals. Our team comprises board-certified veterinary ophthalmologists, residents, interns, and patient care staff who provide high quality, compassionate care for your pet. Patients with retinal disease are offered comprehensive evaluation and management through our Retinal Health Clinic.
Our Services
Conditions and Procedures
Our Ophthalmology Service treats a wide range of eye conditions in dogs, cats, and other companion animals. Common issues we address include cataracts, conjunctivitis, corneal ulcers, glaucoma, and retinal diseases.
Our Services
Conditions and Procedures
Our Ophthalmology Service treats a wide range of eye conditions in dogs, cats, and other companion animals. Common issues we address include cataracts, conjunctivitis, corneal ulcers, glaucoma, and retinal diseases.
Common Conditions
Dogs, cats, and other companion animals can suffer from a variety of ophthalmic conditions. Here is a list of some common problems we treat:
- Cataracts
- Conjunctivitis
- Corneal Ulcer
- Distichia
- Entropion
- Eyelid Tumors
- Feline Herpesvirus
- Glaucoma
- Keratoconjunctivitis Sicca (KCS or Dry Eye)
- Prolapsed Gland of the Third Eyelid (Cherry Eye)
- Retinal Detachment
- Retinal Disease (including Progressive Retinal Atrophy (PRA) or Sudden Acquired Retinal Degeneration (SARD)
- Sudden Loss of Vision
- Uveitis (inflammation of the eye)
Ophthalmic Procedures
The Ophthalmology team routinely addresses conditions using the following procedures:
- Advanced Ocular Imaging (Including ultrasound, photography, and CT/MRI)
- Cataract Surgery
- Corneal Surgery
- Electro-Diagnostic Procedures
- Enucleation
- Eyelid Reconstruction
- Examinations for Breeding Dogs (OFA Eye Certification Registry, CERF)
- Glaucoma Surgery
- Gonioscopy
- Laser Eye Surgery (Diode Laser)
- Retinoscopy/Skiascopy
Our Care Team
Veterinarians
Residents and Intern

Tiffany Chen, DVM

Younjin Han, DVM

Ronald Rinaldi, VMD
Staff
Lee Kiszonas, CVT
Nursing Assistant
Holly Kleva, CVT
Veterinary Technician
Gaining Insight Into
Progressive Retinal Atrophy
Progressive retinal atrophy (PRA) is a group of inherited (genetic) diseases that cause dogs to gradually lose vision in both eyes. It is usually caused by a genetic mutation in the dog’s DNA.
Ryan Veterinary Hospital
Emergencies:
(215) 746-8911
By Appointment:
(215) 746-8387