Corneal Pachymetry Is Done For Measuring the Thickness of the Cornea before Surgeries Such As Refractive Surgery, LRI, and Cataract

 

Corneal Pachymetry

Corneal pachymetry is done all over the world, especially in regions such as the U.S., and U.K. Corneal pachymetry is an abnormal change in the appearance of the corneal tissue. This can be observed through the examination of a patient's eyes at all angles with corneal pachymetry. Corneal pachymetry, as a word is defined by Webster as "a thickening of the corneal tissue, particularly as the result of excessive growth or as the result of inflammation". Corneal pachymetry can cause severe visual impairment and even blindness. Therefore the proper diagnosis of this condition should be made as early as possible.

In regions such as the United States, the prevalence of corneal dystrophies has increased the requirements for corneal pachymetry. For instance, according to the U.S. National Institutes of Health (NIH), around 278,000 individuals in the U.S. suffer from corneal dystrophies.  Ultrasonic ophthalmoscope, computer-assisted tomography (CT) scan, magnetic resonance imaging (MRI), and laser-beam eye surgery are the different techniques for diagnosing corneal pachymetry. To assess the extent of corneal pachymetry, it is essential to use a combination of these techniques. The most common procedures for measuring corneal pachymetry are:

Computer Assisted Tomography (CT) - this is the procedure of applying ultrasound waves to examine the corneal thickness. These waves generate an image of the corneal surface as they pass over it. Blood flow is found to be normal when there is normal intraocular pressure. Thus the measurements of corneal pachymetry can be used for determining the pressure of blood in the eye.

Magnetic Resonance Imaging (MRI) - this method of examining corneal pachymetry uses the variation in magnetic fields around the corneal surface to generate images of corneal thickness. There are many types of MRI available and the one that uses magnetic resonance is called computerized tomography. This technique is used to examine the corneal thickness as well as other eye issues such as glaucoma. This technique is used in many other eye conditions apart from that of pachymetry. Due to the amazing power of MRI, it has become an extremely efficient medical diagnostic tool.


Location: India

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