Our High-Tech Tools
Leading-edge care that makes optometry more accurate
Dr. Brian O’Donnell uses a variety of high-tech tools to ensure accurate prescriptions and diagnoses, and to make sure that your contact lens or glasses have the right fit. Always working to give his patients the best care possible, he keeps up with the latest innovations in optometry.
Read about Dr. O’Donnell’s testing and diagnostic equipment below.
Testing Equipment for lenses prescriptions
Auto Refractor Keratometer: This is a computerized device used during an eye exam to provide Dr. O’Donnell with the base prescription for contact lenses or eyeglasses. It measures the refractive error—the error in the focusing of light by the eye that occurs in nearsightedness and farsightedness. It is also used to determine the shape of the cornea to diagnose conditions such as astigmatism, corneal scarring and corneal distortion.
Auto Lensmeter: This high-tech device verifies the correct prescription in a pair of eyeglasses and can confirm the correct mounting of lenses in spectacle frames.
Testing and Diagnostic equipment for eye problems and eye disease
Biomicroscopy (Slit Lamp): Allows Dr. O’Donnell to evaluate the front of the eye—the cornea, lens, tear film, lids, lashes, conjunctiva (membrane under the eyelid) and more. Dr. O’Donnell can microscopically examine the eye for any problems or abnormalities.
TearLab Test: Gives Dr. O’Donnell information about the salt content of your tears, which is used to detect dry eye disease.
Visual Field Testing: Measures your side (peripheral) vision and central vision. Also called perimetry, it checks the function of the optic nerve and detects if the field of vision has been affected by glaucoma (increased pressure in the eyeball).
Fundus Photography: The fundus of the eye is the interior surface of the back of the eye. With fundus photography Dr. O’Donnell can take a photo of the back of the eye including the optic nerve, the retina and its blood vessels. It can detect symptoms such as retinal detachment or eye diseases, such as glaucoma. For diabetics, regular fundus examinations are advisable, such as every 6 months to one year, to screen for diabetic retinopathy (damage to the retina).
Anterior Segment (near the front) Photography: Takes a real time video or photo of the front of an eye or eyes. This is very useful in the detection of different eye diseases affecting the anterior of the eye.
Pachymetry: Measures the thickness of the cornea using ultrasound. It’s used to detect and manage glaucoma. A cornea that is too thin is an indicator of glaucoma and progression. It is also used to help determine if a patient is a candidate for Lasik surgery.