Corneal topography, also known as photokeratoscopy or videokeratography, is a non-invasive medical imaging technique for mapping the surface curvature of the cornea, the outer structure of the eye. Since the cornea is normally responsible for some 70% of the eye's refractive power, its topography is of critical importance in determining the quality of vision.
The three-dimensional map is therefore a valuable aid to the examining ophthalmologist or optometrist and can assist in the diagnosis and treatment of a number of conditions; in planning refractive surgery such as LASIK and evaluation of its results; or in assessing the fit of contact lenses. A development of keratoscopy, corneal topography extends the measurement range from the four points a few millimeters apart that is offered by keratometry to a grid of thousands of points covering the entire cornea. The procedure is carried out in seconds and is completely painless.
Special thanks to the EyeGlass Guide, for informational material that aided in the creation of this website. Visit the EyeGlass Guide today!
Digital Retinal Imaging & OCT Scans
We use cutting-edge digital imaging technology to assess your eyes. Many eye diseases, if detected at an early stage, can be treated successfully without total loss of vision. Your retinal Images will be stored electronically. This gives our Indian Trail eye doctors a permanent record of the condition and state of your retina.
This is very important in assisting your Indian Trail optometrist to detect and measure any changes to your retina each time you get your eyes examined, as many eye conditions, such as glaucoma, diabetic retinopathy and macular degeneration are diagnosed by detecting changes over time.
The advantages of digital imaging include:
- Quick, safe, non-invasive and painless
- Provides detailed images of your retina and sub-surface of your eyes
- Provides instant, direct imaging of the form and structure of eye tissue
- Image resolution is extremely high quality
- Uses eye-safe near-infra-red light
- No patient prep required
Digital Retinal Imaging
Digital Retinal Imaging allows your eye doctor to evaluate the health of the back of your eye, the retina. It is critical to confirm the health of the retina, optic nerve and other retinal structures. The digital camera snaps a high-resolution digital picture of your retina. This picture clearly shows the health of your eyes and is used as a baseline to track any changes in your eyes in future eye examinations.
Optical Coherence Tomography (OCT)
An Optical Coherence Tomography scan (commonly referred to as an OCT scan) is the latest advancement in imaging technology. Similar to ultrasound, this diagnostic technique employs light rather than sound waves to achieve higher resolution pictures of the structural layers of the back of the eye.
A scanning laser used to analyze the layers of the retina and optic nerve for any signs of eye disease, similar to an CT scan of the eye. It works using light without radiation, and is essential for early diagnosis of glaucoma, macular degeneration and diabetic retinal disease.
With an OCT scan, doctors are provided with color-coded, cross-sectional images of the retina. These detailed images are revolutionizing early detection and treatment of eye conditions such as wet and dry age-related macular degeneration, glaucoma, retinal detachment and diabetic retinopathy.
An OCT scan is a noninvasive, painless test. It is performed in about 10 minutes right in our office. Feel free to contact our office to inquire about an OCT at your next appointment.
OCT TopCON Maestro
The OCT world at your fingertips: simply touch the operation screen, and the Maestro automatically scans both eyes and produces simultaneously an OCT scan & a true color fundus image.
- Fully automated & easy operation: With a single touch of the pupil on the capture screen, the 3D OCT-1 Maestro automatically scans the left and right eye, and produces simultaneously an OCT scan and a true color fundus image. The auto-alignment, the autofocus and auto shoot ensure that the whole process is done fast and correctly.
- Flexible operation: The 3D OCT-1 Maestro can be operated from various positions using a rotable10 ”touch screen, which improves the interaction with patients dramatically. The Maestro can be operated in a classical position, or the operator can be next to the patient. In both situations, the operator can be sitting or standing.
- Wide-field OCT scan: The12 mm x 9 mm OCT wide field scan in the 3D OCT-1 Maestro provides measurement and topography of the optic nerve and macula in one scan. The Maestro produces high definition B-scans composed of 50.000 A-scans per second.
- True color fundus image: The Topcon 3D OCT-1 Maestro has a unique combination of providing simultaneously OCT and fundus images, by triggering just one. The retinal image is a true color fundus image which produces crystal clear details. The 3D OCT-1 Maestro provides red-free images as well.
- Various analysis functions: The instrument, in combination with Topcon Fastmap software, offers a wide choice of analysis functions such as optic disc analysis, 3D macula analysis, 12mm 3D wide scan, and others.
- 3D OCT-1 Maestro Modularity: The Topcon 3D OCT-1 Maestro is a very flexible OCT system. There is a set up for every individual wish and budget. The Maestro incorporates standard OCT imaging and analysis for the posterior segment of the eye. The 3D OCT-1 Maestro can be upgraded at any time with an Anterior Module, for anterior OCT imaging and analysis. 3D-OCT Maestro incorporates a true color fundus camera, which takes simultaneously an OCT image and a color fundus image. This combination is unique and has a great impact on the analysis and diagnosis of the patient. The 3D OCT-1 Maestro Solo is dedicated for posterior OCT imaging and analysis only.
Visual Field Testing
A visual field test measures the range of your peripheral or “side” vision to assess whether you have any blind spots (scotomas), peripheral vision loss or visual field abnormalities. It is a straightforward and painless test that does not involve eye drops but does involve the patient's ability to understand and follow instructions.
An initial visual field screening can be carried out by the optometrist by asking you to keep your gaze fixed on a central object, covering one eye and having you describe what you see at the periphery of your field of view. For a more comprehensive assessment, special equipment might be used to test your visual field. In one such test, you place your chin on a chin rest and look ahead. Lights are flashed on, and you have to press a button whenever you see the light. The lights are bright or dim at different stages of the test. Some of the flashes are purely to check you are concentrating. Each eye is tested separately and the entire test takes 15-45 minutes. These machines can create a computerized map out your visual field to identify if and where you have any deficiencies.
OPTOS Retinal Exam
Annual eye exams are vital to maintaining your vision and overall health. We offer the optomap® Retinal Exam as an important part of our eye exams. The optomap® Retinal Exam produces an image that is as unique as you fingerprint and provides us with a wide view to look at the health of your retina. The retina is the part of your eye that captures the image of what you are looking at, similar to film in a camera.
Many eye problems can develop without you knowing. You may not even notice any change in your sight. But, diseases such as macular degeneration, glaucoma, retinal tears or detachments, and other health problems such as diabetes and high blood pressure can be seen with a thorough exam of the retina.
An optomap® Retinal Exam provides:
- A scan to show a healthy eye or detect disease.
- A view of the retina, giving your doctor a more detailed view than he/she can get by other means.
- The opportunity for you to view and discuss the optomap® image of your eye with your doctor at the time of your exam.
- A permanent record for your file, which allows us to view your images each year to look for changes.
- Visit our what to expect page
The optomap® Retinal Exam is fast, easy, and comfortable for all ages. To have the exam, you simply look into the device one eye at a time and you will see a comfortable flash of light to let you know the image of your retina has been taken. The optomap® image is shown immediately on a computer screen so we can review it with you.
Please schedule your optomap® Retinal Exam today!