Cataract surgery without lens placement

Cataract surgery is divided into steps and processes. The principle of cataract surgery is very simple. It requires surgical cutting to replace the lens inside the fundus. After replacing the new lens, the person's vision can return to normal. Cataract surgery without replacing the lens will cause serious vision problems for the patient, so the surgical process is very important.

Surgical procedures Cataract surgery preoperative examination

Most cataract patients are tall and weak, with multiple diseases co-existing. In order to ensure the success of the operation and prevent complications, some necessary local and systemic examinations should be carried out before the operation.

1. Routine inspection

The eye examination before cataract surgery should include visual function (light perception, light localization, color vision). Routine slit-lamp examination of the eye and measurement of intraocular pressure. For suspected fundus lesions, electrophysiological examination, B-ultrasound examination of the eye, macular function examination, etc. can be performed. For patients who have undergone eye surgery, corneal endothelial cell count can be performed as needed.

Based on the above examinations, the condition of the eye to be operated on can be roughly evaluated before surgery, the recovery of visual function after surgery can be estimated, and preparations can be made for possible complications and risk factors that may arise during the operation.

There are no specific rules for the timing of cataract surgery. In the past, it was believed that cataracts could only be treated surgically after they matured. However, with the development of surgical techniques, immature cataracts can also be treated surgically. For patients with nuclear cataract who have high vision requirements, surgery can be arranged if the vision is above 0.3 or 0.5.

2. Special patient examination

For patients with concurrent eye diseases, the timing, method or order of surgery should be carefully decided. For example, patients with chronic dacryocystitis should first undergo nasolacrimal cystostomy or dacryocystectomy, and patients with glaucoma may consider combined glaucoma-cataract surgery.

For patients with cardiovascular diseases, the condition should be controlled before surgery; if conditions permit, electrocardiogram monitoring can be performed during the operation to ensure the safety of the operation.

For patients with diabetes, blood sugar should be controlled first, and antibiotics should be used before surgery to prevent infection. If there are systemic or local acute or chronic inflammatory lesions, treatment should be given first.

Preoperative considerations

1. If you have high blood pressure, diabetes or cough, you should consult a physician for diagnosis and treatment, and then undergo cataract surgery after your condition stabilizes.

2. If you are taking any medication for high blood pressure, diabetes or cough, please continue to take it before, during and on the day of surgery.

3. Take good care of your personal hygiene (wash your hair and take a bath) the day before the operation.

4. Please clean your face on the day of surgery and do not use any cosmetics.

5. You can eat a small amount before surgery.

6. A family member must be present on the day of surgery.