Stereotype 1: Excimer laser surgery is not selective? Not all patients are suitable for myopia correction with excimer laser surgery, and excimer laser surgery is also selective. Patients are advised to undergo a series of initial and follow-up examinations before deciding to have the surgery, in order to ensure that the entire procedure is carried out. At the same time, patients should inform the surgeon of their medical history, changes in vision, and any systemic diseases that may affect the surgery (immune, collagen diseases, scarring, etc.). The initial examination includes visual acuity, computerized optometry, intraocular pressure, corneal thickness measurement, etc. Follow-up examinations include optometric review, corneal curvature, corneal topography, corneal thickness and dilated fundus examination. The physician will carefully screen for special cases that are not suitable for surgery, such as cone corneas and fundus lesions. In addition, the patient should have a reasonable scientific position of the expected results of the surgery. After the surgery, the patient should have regular follow-ups and reviews under the guidance of the surgeon and develop good eye care habits. Thinking 2: How to make laser surgery safe to the end? Perhaps, many patients have certain concerns about excimer laser surgery for myopia intervention: there are risks associated with the surgery, and in case of improper operation, will it result in serious consequences such as blindness? Excessive worry often comes from the lack of basic knowledge about the surgery for many patients. In general, the excimer laser is a very short wavelength (about 193 nm) ultraviolet light, which has a photochemical effect on biological tissue and does not produce thermal damage. Generally, excimer laser devices have infrared tracking systems that automatically stop the laser when the patient’s eye deflects beyond the normal range, ensuring safe treatment. In layman’s terms, the use of excimer laser light is like creating a pair of “biological glasses” on the patient’s corneal stroma. Since this part of the tissue does not regenerate, the restored vision is clearer and more stable. However, it is important to note that the patient needs to take care of himself for about 3 weeks after the procedure under the supervision of the doctor. Myth #3: Orbital tumors are only a “low probability”? If one were to rank the probability of eye diseases, orbital tumors would not be at the top of the list. However, if such “small probability events” are overlooked and not treated correctly in a timely manner, there is a risk of paying a painful price for them. Generally speaking, orbital tumors can be asymptomatic in the early stages of development. When the tumor grows to a certain size and compresses the nerve, symptoms such as loss of vision or protrusion of the eye will be noticed. Although orbital tumors have a low probability of occurrence, they are a difficult and serious disease in ophthalmology, which not only damage the eye and visual function, but also can be life-threatening in serious cases. However, orbital tumors do not occur without clues, as patients with orbital tumors usually have protruding eyeballs. Therefore, if you notice a difference in the prominence of the eyeballs or a slight swelling and pain in one eye, you should go to the hospital promptly for examination. Surgical removal is the most common and effective method for both benign and malignant orbital tumors. Due to the small volume of the orbit and the intricate anatomy, the diagnosis is difficult and the surgical risk is high. Therefore, before orbital tumor surgery, a comprehensive and objective surgical plan should be formulated by integrating the knowledge of ophthalmology, rhinology, neurology and medical imaging. Stereotype 4: Cataract can improve presbyopia? According to the latest data, cataracts are the leading cause of blindness in China. Cataracts in the elderly account for the majority of patients. Perhaps some elderly people may wonder why their presbyopia disappears and their near vision suddenly becomes better when cataracts first appear. We know that senile cataracts are related to ageing. As we age, most elderly people experience abnormalities in intracrystalline metabolism, and the crystal fibers become degenerate, swollen and cloudy. When the internal fibers are sufficiently swollen, the lens becomes thicker. At this time, however, the refractive power of the central portion of the eye increases just enough to allow images to be projected more correctly on the retina. As a result, many elderly people with presbyopia can see significantly clearer, even small objects at close range without presbyopic glasses. However, although the near vision of seniors with cataracts improves, distal vision can still be blurry. Nevertheless, it is recommended that seniors should not take any chances and should go to the hospital as soon as they find themselves with cataract symptoms. Under the guidance of doctors, they can choose treatments such as ultrasonic cataract extraction and laser cataract extraction according to the characteristics of their individual conditions.