Radial keratotomies, a type of refractive surgery performed to treat nearsightedness, is spelled /ˈreɪdiəl kəˌrætəˈtɒmiz/. In the IPA phonetic transcription, the stress is on the first syllable /ˈreɪdiəl/ and the second syllable is /kə/, not /keɪ/ as it might appear in traditional English spelling. The ending of the word /tɒmiz/ indicates that it is a plural noun, meaning that multiple surgeries are being referred to. Understanding phonetic transcription can aid in proper pronunciation and communication in the medical field.
Radial keratotomies (RK) is a surgical procedure performed to correct nearsightedness (myopia). It involves making precise incisions or cuts on the cornea, the clear front surface of the eye, in a radial or spoke-like pattern. This surgical technique is designed to reduce the steepness of the cornea and reshape it, thus altering the way light enters the eye and improving the overall vision.
The radial keratotomy procedure was popularized in the 1980s and 1990s as a viable alternative to wearing corrective lenses or undergoing more invasive surgical procedures such as laser eye surgeries. Each incision on the cornea is carefully planned in terms of length and depth, and the typical number of incisions ranges from four to eight, although the exact number may vary depending on the patient's level of nearsightedness.
Radial keratotomies are usually performed under local anesthesia, and recovery time can vary from patient to patient. Follow-up visits with an ophthalmologist are necessary to monitor the healing process and ensure that the desired refractive correction is achieved.
While radial keratotomies were once a common procedure, they have become less popular in recent years due to the rise of more advanced laser-based vision correction surgeries, such as LASIK. However, for certain individuals with specific eye conditions or those unable to undergo laser surgeries, radial keratotomies may still be a viable option for improving their nearsightedness.
The word "radial keratotomies" is derived from two main sources:
1. Radial: The term "radial" comes from the Latin word "radius", which means "spoke of a wheel" or "ray". In this context, "radial" describes the pattern of incisions made on the cornea, which resemble the spokes of a wheel radiating outwards from the center.
2. Keratotomy: "Keratotomy" is composed of two Greek roots - "kerato-" from "keratos" meaning "cornea" and "-tomy" from "tomē" meaning "cutting" or "incision". Therefore, "keratotomy" refers to the surgical procedure that involves cutting or incising the cornea.