GTM-PKVD8HV Skip to main content

Next to the Chinatown Gate entrance in San Francisco

Call Now! 415-683-6440
Schedule An Appointment
Home ยป Technology


We use the most up-to-date technology to ensure the best eye care possible. Learn about the different types of tests and equipment you may experience on a visit to City Optometry.

Digital Retinal Imaging

DRS 150x150Digital retinal photography uses a specialized low power microscope with an attached camera designed to photograph the interior surface of the eye, including the retina, optic disc and macula. Retinal photography also allows us to diagnose diseases of the eye and monitor progression of these diseases. Eye diseases that we commonly diagnose and monitor with retinal photos include glaucoma, macular degeneration, diabetic retinopathy, hypertensive retinopathy and others.

We also use retinal photography to create a baseline digital image of the retina for future comparison. We believe this is a great way to offer the best in preventive eye care. We also have our digital retinal camera networked into all our exam rooms so that we can show the photos to patients to better educate them about their eye health or eye disease.

Cirrus OCT

Optical coherence tomography (OCT) is an imaging method that uses light to scan the retina. It can be performed on undilated pupils and is painless. It provides detailed, real-time information about the structure of the living eye. Using light to scan the retina and optic disc, this pioneering technology brings new clinical tools for the diagnosis and management of retinal disease and glaucoma.

OCT 150x150The Cirrus HD-OCT allows our doctors to visualize retinal structures, evaluate the retinal thickness in 3-D and to view high-definition cross-sectional images that reveal subtle details of retinal diseases. The Cirrus HD-OCT provides the most detailed scan patterns and layer maps available for identifying retinal and glaucoma disease characteristics, and monitoring disease progression. It enables our doctors to project future vision loss and make timely treatment decisions. Our doctors use OCT technology to diagnose and monitor diseases such as glaucoma, macular degeneration, macular holes, diabetic retinopathy, other macular defects, and more.

Visual Field Analysis

VF2 150x150Visual fields are used to check a patients’ peripheral (or side) vision. Visual field loss may occur due to diseases or disorders of the eye, optic nerve, or brain. We measure this by using a specialized instrument called a computerized visual field where points of light are flashed onto a white screen and the patient is asked to press a button if he or she sees it. The computer then automatically maps and calculates the patient’s visual field.

Our doctors use visual field exams to diagnose and monitor glaucoma, detection of central or peripheral retinal disease, eyelid conditions such as ptosis or drooping, optic nerve disease, and diseases affecting the visual pathways within the brain.

The Diopsys

glaThe Diopsys uses EKG-type technology, used to measure the electrical signals of the heart, to measure how well the eye sends information to the brain for processing.

Even though the instrument is expensive, the information that we can gather is so far advanced than any other technology. We felt it was in keeping with our commitment to our community to bring the most advanced technology into our office. Click here to read more