We conduct advanced diagnostic testing that ensures a thorough and accurate assessment of your vision and the health of your eyes. There are a number of tests that your optometrist may conduct during your normal routine eye exam to determine the status of your eyesight and if there is any indication of eye diseases such as macular degeneration, cataracts and glaucoma.
Visual Acuity Test | Visual Field Analysis | Refraction Assessment | Retinoscopy | Optical Coherence Tomography | Slit-lamp Examination | Digital Retinal Imaging
Visual Acuity Test
A Visual Acuity Test is a routine part of an eye examination performed to determine the smallest letters a patient can read on a standardized chart that is 20 feet away. Normal vision is considered 20/20. The top number represents your distance from the chart, while the bottom number represents the distance at which a person with normal eyesight could read the same line correctly. If your visual acuity is 20/60, that means that a person with normal vision can read the same line correctly from 60 feet away.
Visual Field Analysis
To determine your full peripheral vision, your doctor will utilize Visual Field Analysis your peripheral horizontal and vertical range. This test can also check for potential blind spots - an indication of possible eye disease.
A Confrontation Visual Field Test is used to measure your overall field of vision. You will be asked to cover one eye while focusing on a specific target object, and describe the images in front of you. In some cases, your doctor may choose to use a computerized instrument called a perimeter to measure your visual field.
A refraction assessment helps your eye doctor determine the most accurate lens prescription to correct farsightedness, nearsightedness, presbyopia and astigmatism. You will be asked to look through a Phoroptor, a mask-like device that contains different lenses, and will ask which lens is clearer. This will help determine the best lens strength to give you the sharpest vision.
Performed early in a routine eye exam, a retinoscopy test determines an estimated prescription from which to start. With the room's lights dim, you will be asked to look through a machine and focus on a large target (usually the big "E" on the chart). Your doctor will shine a light in your eye and flip lenses on the machine. Based on the how the light reflects on your retina, the doctor will be able to calculate your refractive error.
Optical Coherence Tomography (OCT)
Optical Coherence Tomography is a noninvasive imaging test used to check for anatomical changes in the retina and assess any damage to nerves of the eye. OCT can also aid in early detection of certain conditions and diseases such as macular degeneration, glaucoma, diabetic retinopathy and optic nerve damage.
During an OCT test, the patient looks at a yellow-green spot inside of a machine. While the patient is looking at that spot, the retina is scanned with an infrared light, forming cross-sectional high-resolution images. Because the images are high resolution, eye doctors are able to quickly and accurately pinpoint the location and extent of any damage.
A slit-lamp examination allows the doctor to view under high magnification the structures in the front and back of the eye using a microscope with a light attached. Each part of the eye is examined for possible diseases or defects. For a more effective examination, some patients may have to have their eyes dilated.
Digital Retinal Imaging
Digital Retinal Imaging utilizes a high-tech camera to aid in the diagnosis of eye diseases. With Digital Retinal Imaging, a digital picture is taken of the back of your eye. This picture provides your doctor a detailed view of the retina, showing nerves, blood vessels and any conditions or diseases that might be present. These retinal pictures are added to your medical records and used as a point of comparison for your future eye exams.