Your eyes are completely unique, and no two are the same – not even your own two!
Although the human body looks symmetrical enough at first glance, most people have slight differences in the size and shape of their hands, feet, and even their eyes.
Anybody with vision issues needs to have them correctly diagnosed before choosing an effective solution.
For those considering laser eye surgery or corneal inlays (to combat refractive errors or ageing of the eye respectively), detailed studies of the eye are key in determining if you are a suitable candidate for either procedure.
People anxious to ditch their reading glasses in favour of corneal inlays like the Presbia Microlens need to first have their eyes extensively checked during a comprehensive 2-hr consultation with Mr Crewe-Brown and his team, to determine if they are appropriate candidates, and to see if there are any co-existing eye issues.
The technology involved in detailed eye mapping is very advanced, even more so in recent years, and now eye specialists can gather the most comprehensive information about every little nook and cranny of your eyes using the kind of state-of-the-art equipment such as that found at Crewe-Brown Vision clinics.
Several tests and exams are used to gather as much information about your vision as possible, then collated to give the Optometrist performing the tests a thorough overview of your particular situation.
One of the more advanced diagnostic tools in the Crewe-Brown arsenal is the Corneal Topography machine; a computer assisted tool used to create a three-dimensional map of the curvature over the surface of the cornea of each eye.
The cornea is a major element in vision as it’s responsible for most of the eye’s focusing power. Its job is to bend or refract all the light entering the eye onto the retina at the back wall of the eye to form a clear image.
If your cornea is too flat, too steep or oddly-shaped, you’ll experience vision difficulty at certain distances.
If you are in your forties and have begun to experience difficulty reading printed material, you’ve developed presbyopia; the age-related deterioration of the ability to focus on close objects.
Optometrists can effectively use corneal topography to produce a very detailed visual picture of the shape of the cornea and its power. This allows an analysis of your vision that can be used to diagnose and treat various eye issues, as well as to determine if you are a viable candidate for laser eye procedures or corneal inlay placement.
Corneal topography can detect any irregularities in the eye, in minute detail, that would otherwise be invisible in more conventional tests.
Corneal inlays can be used for patients who’ve never had any problem until they began to lose their reading vision, as well as patients who have myopia, hyperopia, or astigmatism, and corneal topography combined with other tests helps determine the next step on your treatment journey.
Patients who have previously had the LASIK procedure can also benefit from corneal inlays, such as the Presbia Microlens.
Corneal topography helps the Optometrist screen for certain disorders like keratoconus, which would rule people out for inlays, as well as adequate corneal thickness so the inlay can be optimally placed within the stroma, the top part of the cornea itself.
The compilation of the corneal ‘map’ is painless – the corneal topography equipment consists of a computer linked to a lighted ‘bowl’ with a pattern of rings inside. You simply sit still with your head snug against a padded bar so the computer can generate a series of data points. There is no touching of the eye involved.
The computer software digitises all the data and creates a printout of your corneal shape, with colour-coding to indicate different elevations. It’s very similar to an ordnance survey map of the land!
To find out if you are a candidate for a corneal inlay that would free you from dependence on corrective eyewear, even if you have co-existing eye issues or have had previous laser eye surgery, call the Crewe-Brown Vision Clinic in Manchester or London for an appointment.