Technical principle of TPRK operation in Guangzhou Ophthalmology Center
Guangzhou Eye Center is a professional eye hospital that provides a variety of eye surgery services, including TPRK surgery. TPRK surgery is a method of correcting corneal shape by laser to improve refractive problems such as myopia, hyperopia and astigmatism. The technical principle of TPRK operation will be introduced in detail from four aspects.
Morphological analysis of cornea
The first step of TPRK surgery is to conduct corneal morphological analysis of the patient's eyes. Cornea is the outermost transparent tissue of the eye, and its curvature and shape play a key role in the refraction of light. By using special instruments, doctors can measure the corneal curvature, thickness, surface irregularity and other parameters of the patient's eyes, so as to obtain personalized preoperative evaluation data.
In TPRK surgery, doctors will use these data to determine which part of the cornea should be removed to achieve the required correction effect. Through independent analysis of each eyeball, doctors can develop personalized treatment plans for each patient to maximize the accuracy and predictability of surgery.
Laser Etching of Corneal Surface
The key step of TPRK is to use laser to etch the corneal surface. This kind of laser is called excimer laser. It acts on the corneal surface and cuts according to the pre calculated parameters to change the shape of the cornea.
During the operation, the doctor will use a special laser knife to cut the epidermis on the cornea, and use excimer laser to gradually remove the thin layer of tissue on the corneal surface. Excimer laser has high accuracy and controllability, which can be adjusted according to the individual data of patients, so as to achieve the required corneal morphological changes.
After the corneal surface is etched, the doctor will use antibiotic eyedrops to prevent infection and cover the eyes to protect the cut corneal surface.
Promotion of corneal surface self-healing ability
After etching the corneal surface, TPRK surgery also involves steps to promote the self-healing ability of the corneal surface. As the corneal surface has been peeled off, the eyes will feel slight discomfort and pain, but this discomfort usually disappears within a few days.
Ophthalmologists will recommend the use of some drug eye drops, artificial tears and antibiotics to promote the healing and recovery of corneal surface according to the specific conditions of patients. The use of these drugs can reduce pain, prevent infection, and accelerate the regeneration process of corneal epithelium.
Clinical effects and precautions
TPRK surgery is a safe and effective ophthalmic surgery method, which can significantly improve the refractive problems and improve the quality of vision and life of patients. After surgery, patients can generally return to normal daily life quickly.
However, it should be noted that TPRK surgery may have some complications and risks. For example, xerophthalmia, photosensitivity, night vision problems may occur after surgery. Therefore, before surgery, doctors will conduct a detailed preoperative evaluation of patients and fully communicate with patients to ensure the applicability and predictability of surgery.
In general, the TPRK operation in Guangzhou Eye Center is a technology that uses excimer laser to etch the corneal surface to improve refractive problems. Through individualized corneal morphological analysis, laser etching and the promotion of corneal surface self-healing ability, this operation can safely and effectively correct the vision problems of patients such as myopia, hyperopia and astigmatism.
