1, allergic to local anesthetics, or anti-narcotic drugs are also contraindications for angle surgery, and you should inform the angle surgeon.
2, there are infectious diseases inside and outside the eye, which is a contraindication for canthotomy.
3. Patients with severe liver, kidney, heart and brain diseases, pregnant women and patients with severe blood diseases are not suitable for canthotomy.
4. Those who have mental illness, psychological disorder or high requirements or do not meet the actual requirements are not suitable for canthotomy.
5. People with obvious scar constitution should not do canthotomy.
6. Those who have skin inflammation injury at the operation site should not have canthotomy.
And postoperative preventive measures:
1, and try to avoid water accumulation in the surgical site within 7 days after operation;
2, ensure the surgical site clean, prevent infection. If there is blood scab or secretion on the wound, it can be wiped with sterile physiological saline.
3. After operation, local wounds can be bandaged with pressure or cold compress with ice packs, but the pressure should not be too high, so as not to damage eyes. Once there is bleeding and severe hematoma after operation, you should go to the hospital for follow-up in time;
There should be a quiet and comfortable environment to recuperate after operation. Don't watch TV or newspapers within 2 weeks after operation, and it is best to lie in a semi-supine position (raising the pillow) when staying in bed, so as to avoid eye fatigue or bow your head and aggravate the swelling of the wound;
There will be some pain in the wound on the day of operation, but it will gradually decrease with the passage of time. Patients should not rush to take painkillers, because aspirin drugs will aggravate wound bleeding;
6. Avoid eating irritating foods such as peppers;
7, strictly abide by the doctor's advice and follow-up.
Consider whether you can accept these postoperative taboos before deciding whether to open them.