1. What is the normal size of the eye slit? The eye fissure is the gap between the upper and lower eyelids, or what is commonly referred to as the eye slit. Since ancient times, there is a rule of “horizontal three” and “vertical five” in China. The three horizontal parts are from the hairline to the eyebrow, from the eyebrow to the bottom of the nose and from the bottom of the nose to the lower edge of the chin. The vertical five refers to the five equal parts from the auricle to the external canthus, from the external canthus to the internal canthus, from the internal canthus to the contralateral internal canthus, from the contralateral internal canthus to the external canthus and from the external canthus to the auricle. The western “Rule of fifth” is exactly the same as the vertical five in China. According to this law, the length of the normal eye fissure should be equal to one-fifth of the facial width, which is 30-34mm on average for adults; the width of the normal eye fissure, which is the upper and lower diameter of the eye fissure, is 10-12mm on average for adults, and it is normal for the above eyelids to cover the cornea by about 1-2mm. It should be noted that even if the length and width of the eye fissure are within the normal range mentioned above, it is still not necessarily a normal eye fissure, but also depends on whether it is coordinated with other organs such as the ear, nose, mouth, and eyebrows. 2.What kind of eyes are considered beautiful? What kind of eyes are considered beautiful? Different ethnic groups have different aesthetic standards. It is generally believed that large, bright eyes, eyes with slender corners, clear and crystal eyes are beautiful; small eyes, bloated eyes, droopy eyes are not beautiful. 3. What is blepharoplasty? Blepharoplasty is a cosmetic surgery for patients with single eyelid or upper eyelid skin laxity and bloating. 4, who is or is not suitable for cosmetic blepharoplasty? Patients who are healthy, mentally fit, and actively request surgery for single eyelid or upper eyelid skin laxity and bloating are suitable for cosmetic blepharoplasty. Patients with local inflammation of the eyelid, eye disease, paralysis of the eye muscles, protruding eyeballs, and unrealistic requirements are not suitable for cosmetic blepharoplasty treatment. 5. What are the key points of blepharoplasty design? There are two key points in the preoperative design of blepharoplasty. (1) Determine the width of the upper eyelid. There are three types of eyelid widths: wider, moderate, and narrower. （The upper eyelid crease and the lid margin are determined by the relationship between the upper eyelid crease and the lid margin. This is what is known as the “phoenix eye”. The above, exactly how to determine, should be combined with the patient’s face shape, personal requirements and other factors to consider. 6, what are the surgical methods of blepharoplasty? Because the structure and shape of each person’s eyelid is different, the surgical method used to form the heavy eyelid is different, and there are two methods of cosmetic blepharoplasty: suture and incision. (1) Suture method. This method involves suturing the dermis of the skin to the lid or levator tendon membrane, or directly ligating the skin and conjunctiva at the upper edge of the lid, relying on scar adhesions from the surgical trauma to form the eyelid. This method is suitable for patients with thin upper lid skin and younger patients. (2) Incisional method. This method involves cutting the skin at the appropriate location on the upper lid, removing some of the orbicularis muscle or orbital fat, and suturing the skin incision to the lid or levator tendon membrane. This method is suitable for patients of any age and is particularly suitable for older patients with lax and bloated upper lid skin. 7. What is the postoperative care for blepharoplasty? Blepharoplasty can usually be done in an outpatient operating room and the patient can go home to rest after surgery. 24 hours after surgery, the dressing can be removed from the wound, eye secretions and blood scabs on the incision can be wiped away, and all sutures in the operative area can be removed 5-7 days after the incisional blepharoplasty. 8. What is the recovery after blepharoplasty? It is normal to have mild bruising or swelling in the eyelid area after blepharoplasty, and the swelling usually begins to subside in 5-8 days, and it takes 2-3 months for the swelling to fully subside.