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.
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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 the eye doctor a permanent record of the condition and state of your retina.
This is very important in assisting our 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.
Examining the peripheral retina is critical. Some of the most harmful eye diseases, such as retinal tears, ocular tumors and diabetic retinopathy, occur in the far periphery of the eye, making them difficult to detect. Symptoms often do not manifest in the early stages and vision may not be affected until there is significant and unrecoverable damage.Using the ultra-widefield fundus imaging technology, your eye doctor can capture a wide, high-resolution image of your retina, facilitating comprehensive assessment of your eye health and aiding in the early detection and management of eye disease.
The ultra-wide field fundus exam is beneficial even if your eyes are healthy. By documenting the health of your retina periodically, your eye doctor can compare images side-by-side and detect subtle changes in your eyes over time. These changes might otherwise go unnoticed and can be the hallmark of early changes in your eye health.
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.
Visual Field Testing
A visual field test measures how much 'side' vision you have. It is a straightforward test, painless, and does not involve eye drops. Essentially lights are flashed on, and you have to press a button whenever you see the light. Your head is kept still and you have to place your chin on a chin rest. 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. Your optometrist may ask only for a driving licence visual field test, which takes 5-10 minutes. If you have just asked for a driving test or the clinic doctor advised you have one, you will be informed of the result by the clinic doctor, in writing, in a few weeks.
Normally the test is carried out by a computerised machine, called a Humphrey. Occasionally the manual test has to be used, a Goldman. For each test you have to look at a central point then press a buzzer each time you see the light.
Technology by ZEISS
Autorefraction with the i.Profiler®plus
Every eye is different. See how your eyes are unique.
Every eye is as unique as a human fingerprint. i.Scription technology by ZEISS takes this individuality into account to create lenses specially
made for your unique vision challenges – giving you the best solution for your eyes. You will quickly begin to appreciate the benefits of i.Scription optimized lenses when you discover how much better you can see, especially at night and in low-light situations. You will enjoy the absolutely clear focus, high-definition contrasts and more brilliant colors that these state-of-the-art lenses deliver.
In less than 1 minute this unique instrument measures more than 2500 reference points in your eyes – providing a highly detailed analysis of your vision profile. As a result, vision problems that have had a considerable impact on your vision quality can be recognized and improved. Information about your eyesight that was previously unattainable is now available to your eye care professional. With this new information, your doctor will determine your precise prescription.
Fewer questions and more answers
The correct lenses can only be prescribed when you have enough information about your patient‘s eyes. Let i.Profilerplus provide you with a detailed visual profile so you can have more answers and less questions for your patient.
The acuity chart systems VISUSCREEN 100/500 and the digital phoropter VISUPHOR® 500 from ZEISS offer your eye doctors a sophisticated, modular solution, combining comfort and convenience with speed and efficiency.
The ZEISS VISUPHOR 500 enables preconfigured workflows. Thereby, settings for each test are optimally adjusted, fully automatically, making standard refraction tests simple and fast. Settings and workflows can also be individually configured in the freestyle mode. Patient contact with the headrest is continuously monitored and displayed on the screen.