What examinations should Guangdong Affiliated Hospital do before femtosecond surgery?
Femtosecond laser myopic surgery is a common ophthalmic surgery, which can effectively correct myopia, hyperopia, astigmatism and other vision problems. Before the operation, the patient needs to carry out a series of examinations to ensure the safety and effectiveness of the operation. The routine examinations before femtosecond surgery in Guangdong Affiliated Hospital will be introduced in detail from four aspects: corneal topography, ophthalmic examination, fundus examination and intraocular pressure examination.
Corneal topography
Corneal topography is an examination method to evaluate vision problems and determine surgical plans by measuring the shape and curvature of the corneal surface. Before femtosecond surgery in Guangdong Affiliated Hospital, patients need to have corneal topography examination to understand the shape, thickness, curvature and other parameters of the cornea. These parameters are very important for laser positioning and correction effect during surgery. Through corneal topography examination, doctors can determine the operation plan more accurately to ensure the safety and success of the operation.
Corneal topography examination generally requires the use of professional corneal topography instruments, including Placido disk, grating camera, etc. The patient only needs to sit in front of the examination equipment, and the professional technicians will aim the equipment at the patient's eyes to obtain corneal terrain data by capturing the image of the eye surface. This process is usually simple and fast, and will not bring obvious discomfort to patients.
Ophthalmic examination
Eye examination is another important link before femtosecond surgery in Guangdong Affiliated Hospital. In the ophthalmic examination, the doctor will carefully check the various indicators of the patient's eyes, including naked eye vision, corrected vision, eye movement, corneal surface condition, intraocular pressure, etc. These indicators can help doctors to assess patients' eye health and surgical adaptability.
Ophthalmic examination generally includes vision examination, fundus examination, eye movement examination and other steps. Vision examination measures the naked vision and corrected vision of patients by asking them to read letters or numbers on the vision chart. Fundus examination can evaluate the eye health of patients by observing fundus blood vessels, optic nerve discs, etc. Eye movement examination can detect whether the patient's eyeball is in normal coordinated movement and eliminate eye muscle problems.
Fundus examination
Fundus examination is an important step before femtosecond surgery in Guangdong Affiliated Hospital. The patient's eye health is evaluated by observing the fundus blood vessels, optic nerve discs, etc. Fundus examination can help doctors find out whether the patient has retinal disease, glaucoma and other eye diseases, so as to determine whether it is suitable for femtosecond surgery.
Fundus examination generally requires the use of professional fundus cameras or microscopes and other equipment. The patient only needs to sit in front of the examination equipment, and the doctor will give an appropriate amount of eyedrops to dilate the pupils, and then use the equipment to aim at the patient's eyes for observation and photography. The whole process usually does not cause obvious pain or discomfort, but may temporarily lead to dilated pupils and blurred vision of patients. Therefore, attention should be paid to avoiding direct sunlight or driving and other activities after the examination.
Intraocular pressure test
Intraocular pressure examination is another key link before femtosecond surgery in Guangdong Affiliated Hospital. Intraocular pressure refers to the pressure inside the eyeball, which is an important indicator for assessing eye health and excluding glaucoma and other eye diseases. Before femtosecond surgery, doctors need to check the patient's intraocular pressure to ensure the safety of the surgery.
The intraocular pressure can be measured by non-contact or contact methods. The non-contact tonometer is a method of measuring intraocular pressure by contacting the eye surface with a sensor. It does not need to contact the eye, and is usually fast, suitable for most patients. The contact tonometer requires the doctor to touch the patient's eyeball with a tonometer pen for measurement, which requires strong cooperation and is suitable for patients wearing contact lenses.
Summary
Before femtosecond surgery, Guangdong Affiliated Hospital needs to carry out a series of examinations, including corneal topography, ophthalmic examination, fundus examination and intraocular pressure examination. These examinations can help doctors to assess the patient's eye health and surgical adaptability, and ensure the safety and effectiveness of surgery. The patient needs to cooperate with the doctor's inspection and guidance before the operation to ensure the smooth operation.
