Computer assisted corneal topography is a diagnostic tool that helps create a 3-D map of the surface curvature of the cornea. The cornea is an important part of the ey that is responsible for focusing. When the eye has normal vision, then the cornea is evenly round. If it is too steep or unevenly curved, the vision is not perfect. The ophthalmologist will diagnose the imperfect and may use the corneal topography to diagnose the condition in a better manner. The advantage of using corneal topography is that it can detect irregular conditions of the eye that is not visible with conventional eye tests. With the computer assisted corneal tool, a detailed description of the shape and power of the cornea is made available and the doctor begins treatment of the corneal surface using this diagnosis. He also uses these details to monitor and treat recurring eye problems. Computer assisted corneal topography will be helpful in treating diseases an injuries of the cornea, corneal abrasions, deformities and irregular astigmatism after corneal transplants. In corneal topography, the patient is made to sit facing a bowl that contains an illuminated pattern in the form of concentric rings. The pattern is then focused on the patient's cornea and reflected onto a digital camera at the centre of the bowl. The shape of the reflected pattern shows the topology of the cornea. Using the computer analysis, the ophthalmologist is able to determine the points across the cornea.
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