Is There a Smell During LASIK?

Yes, during LASIK surgery, some patients report a smell that is often described as similar to burning hair or an electrical fire. This smell is not caused by any actual burning of tissue by heat, but rather it is a byproduct of the interaction between the excimer laser and the corneal tissue. The excimer laser, used in LASIK to reshape the cornea, emits ultraviolet light to remove (ablate) microscopic amounts of corneal tissue through a process called photoablation.

The term “cold beam laser” in the context of LASIK refers to the use of an excimer laser, which is a key component in the procedure. Excimer lasers are often described as “cold” because, unlike other types of lasers that cut or burn tissue through thermal energy, excimer lasers work through a process known as photoablation. This process utilizes ultraviolet (UV) light to precisely remove (ablate) microscopic layers of corneal tissue without generating heat that could damage surrounding eye tissue.

Can You Smell Your Eyes Burning in LASIK Eye Surgery?

No, While many think the smell is “burning” during LASIK, this smell is just a result of the excimer laser’s concentrated light frequency disrupting molecular bonds in the corneal cells in your eyes. No burning involved. The Laser is actually a cold beam Laser.

During LASIK surgery, patients may notice various sensations, but it’s important to understand that the actual process of laser reshaping the cornea is painless due to the numbing drops applied to the eye beforehand. However, some patients report a smell during the procedure, which is often described as similar to burning hair. This smell is attributed to the vaporization of corneal tissue by the laser. The laser’s action on the cornea causes a small amount of tissue to be removed with each pulse, and this process can produce a noticeable smell.

The sensation of smelling something burning during LASIK surgery, as mentioned, can be unsettling but is completely normal and not indicative of any damage or error occurring. This odor is produced by a very precise and controlled removal of corneal tissue by the excimer laser. The laser emits ultraviolet light to reshape the cornea, improving the eye’s ability to focus light onto the retina, which corrects vision. The process involves the vaporization of a tiny amount of corneal tissue, which produces the smell that some patients notice.

The key points to understand about this aspect of LASIK include:

• Nature of the Smell: The smell is due to the interaction between the laser and corneal tissue. When the excimer laser’s ultraviolet light contacts the cornea, it causes a small amount of corneal tissue to vaporize, leading to the release of a byproduct that has a noticeable odor.
• Safety and Comfort: Despite the potential for an unusual smell, LASIK surgery is generally safe and involves minimal discomfort. Before the surgery begins, anesthetic eye drops are applied to the eye to prevent any pain. Patients might feel pressure or experience a light touch sensation, but there should be no pain during the procedure.
• Patient Experience: It’s worth noting that not all patients report noticing this smell. Perception of the smell can vary based on individual sensitivity. Moreover, the surgical team is prepared to ensure the patient’s comfort throughout the procedure, offering reassurance and explaining sensations as they occur.
• Procedure Environment: LASIK surgery rooms are equipped with advanced ventilation systems that help minimize any odors and ensure a sterile environment. These systems help maintain the cleanliness and safety of the surgical area, further ensuring patient safety and comfort.

Understanding these points can help alleviate any concerns or fears about LASIK surgery. The presence of a burning smell is a normal part of the laser’s action on the eye and does not indicate any problem with the procedure. LASIK technology has advanced significantly, offering a high degree of precision and safety, making it a popular choice for correcting vision problems. Patients considering LASIK should discuss any concerns with their surgeon to gain a complete understanding of the procedure, what to expect, and how to prepare for a smooth and successful surgery experience.