Irregular astigmatism refers to regular astigmatism in which the curvature is uneven and curved in multiple directions. It is a rare form of astigmatism, and its treatment increases the risk and severity of photorefractive keratectomy, lamellar corneal transplant, and penetrating corneal transplant.
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How will spectacle correction help in mixed astigmatism?
Query: Hello doctor, Please help me with my assignment. I am an optometry student. My question is what will happen to the foci when correction lenses are placed in the case of mixed astigmatism that has one focal point in the front, which is nearsighted and one behind the retina which is farsighted? Will... Read Full »
Answer: Hello, Welcome to icliniq.com. The condition of one focus in front of the retina and another behind arises in mixed astigmatism as you have already mentioned. To correct this we prescribe toric lenses to the patient which as you must already know, have spherical and cylindrical components with opp... Read Full »