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What is it? |
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Corneal Pachymetry is a non-invasive technique for measuring corneal thickness. |
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What is it done for? |
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Pachymetry is used primarily in the evaluation of patients with corneal diseases and in the assessment of patients at risk for glaucoma. |
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How is it done? |
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Ultrasonic corneal pachymetry is performed by placing an ultrasonic probe on the central cornea, after the cornea has been anesthetized with a topical anesthetic. |
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What are the benefits? |
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It is done for certain corneal diseases keratoconus, bullous keratopathy and corneal oedema.Corneal refractive surgeries (lasik) corneal transplant surgeries. It is used for patients with glaucoma or glaucoma suspect. |
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What are the limitations? |
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Keratoconus patients and in patients with thin corneas.Thickness<500 microns is limited for lasik surgery, <450 microns is a relative contraindication for surface laser. |
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How much time is taken? |
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The time taken for both eye is approximately 5 to 10 minutes. |
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When is to be repeated? |
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As per doctors advise. |
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What are other alternative tests? |
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Corneal thickness test, transducer or probe test for corneal thickness. |
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What is the expense? |
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The cost may vary from one hospital to the other. |
