What is femtosecond surgery?

Femtosecond surgery, also known as laser in situ keratomileusis (LASIK), is an ophthalmic surgery commonly used to correct myopia, hyperopia and astigmatism. It uses femtosecond laser to thin the cornea to change its curvature, thus improving vision problems. Compared with traditional keratomileusis, femtosecond surgery is more accurate and safe, and has faster recovery time.

Risks and complications of femtosecond surgery

Like any surgery, femtosecond surgery also has some risks and complications. However, these complications are very rare, and the risk can be greatly reduced to a low level with experienced doctors and well-equipped facilities.

1. Infection

Although the risk of infection is very low, it may still occur. The doctor will prescribe some disinfectant eyedrops for patients before the operation, and follow strict aseptic procedures to reduce the chance of infection.

2. Postoperative dry eye

Postoperative xerophthalmia is one of the common complications of femtosecond surgery. Patients may feel dry and uncomfortable after surgery. This is because the operation will affect the nerve endings on the cornea, resulting in reduced tear secretion. Doctors will advise patients to use artificial tears to alleviate dry eye symptoms and gradually reduce them within a few months.

3. Vision problems

Although femtosecond surgery can usually significantly improve vision problems, visual abnormalities such as diplopia, starlight and halo are also possible side effects. These problems are usually temporary and will gradually decrease as the cornea recovers.

Aftereffects of femtosecond surgery

In addition to the risks of the operation itself, femtosecond surgery may also lead to some sequelae, although these sequelae are rare.

1. Allergic reaction

Some patients may have allergic reactions to anesthetic or other drugs used in the operation. This allergic reaction may cause eye swelling, pain and blurred vision. If this happens, the patient should report to the doctor immediately.

2. Loss of vision

Although extremely rare, femtosecond surgery may cause vision loss in very few cases. This may be due to serious complications during the operation, such as infection or retinal detachment. However, these cases are very rare, and the overall safety of femtosecond surgery is still widely recognized.

3. Corneal problems

In rare cases, femtosecond surgery may cause corneal problems such as scarring, ulcers, or thinning of the cornea. These problems may affect vision and may require further treatment.

summary

Although femtosecond surgery is a common ophthalmic surgery, there are still some risks and potential complications. However, with the progress of medical technology and experienced doctors, these risks have been reduced to * low, and most patients can successfully complete surgery and obtain satisfactory vision improvement. Before deciding on surgery, patients should consult professional ophthalmologists to understand the risks and benefits of femtosecond surgery in detail, and make wise decisions according to their own conditions.