Bapaye Eye Hospital

Refractive Surgery

LASIK (Laser-Assisted In Situ Keratomileusis) is a type of refractive surgery that is used to correct vision problems such as nearsightedness (myopia), farsightedness (hyperopia), and astigmatism. It is a popular procedure for people who want to reduce or eliminate their dependence on glasses or contact lenses.

During the procedure, a laser is used to reshape the cornea, the clear outer layer of the eye, to correct the refractive error. The surgeon creates a thin flap in the cornea, using either a blade or a laser, and then folds it back to expose the underlying tissue. The laser is then used to remove a small amount of tissue from the cornea to change its shape. The flap is then replaced and allowed to heal naturally.

LASIK surgery is typically performed on an outpatient basis and only takes a few minutes to complete. Most people experience a significant improvement in their vision following the procedure and are able to return to their normal activities within a day or two. However, it’s important to note that LASIK is not suitable for everyone and it’s important to discuss the risks and benefits with an eye surgeon before deciding if it’s the right option for you.

Wavefront-optimized LASIK

Wavefront-optimized LASIK is a type of laser vision correction surgery that uses advanced technology to accurately measure and correct visual imperfections in the eye. It is similar to traditional LASIK surgery, but it uses a special wavefront analyzer to create a detailed map of the eye’s unique visual characteristics, known as aberrations. This information is used to guide the laser during the surgery, allowing the surgeon to make precise, customized corrections to the shape of the cornea.

The goal of wavefront-optimized LASIK is to improve the quality of vision by reducing or eliminating visual aberrations that can cause glare, halos, and other visual distortions. It has been shown to be effective in improving visual acuity and reducing the incidence of side effects such as dry eye and glare sensitivity.

Contoura Lasik

It is a more advanced form of LASIK surgery that uses advanced technology to create a detailed map of the eye’s cornea and make highly customized corrections to its shape.

Contoura LASIK uses a specialized laser system called the Contoura Vision Topography Guided LASIK System, which uses a detailed topographic map of the eye to guide the laser during the surgery. The map is created using a combination of optical coherence tomography (OCT) and placido-disc topography, which measure the curvature and shape of the cornea with high precision. This information is used to create a customized treatment plan for each patient, allowing the surgeon to make precise, individualized corrections to the shape of the cornea.Contoura LASIK is a more advanced form of LASIK surgery that uses a specialized laser and advanced imaging technology to create a detailed map of the unique curvature of the cornea. This map is used to guide the laser as it reshapes the cornea, allowing for more precise correction of vision.

Both wavefront-optimized LASIK and Contoura LASIK can be effective in improving vision, but Contoura LASIK may offer some advantages over traditional LASIK in terms of visual outcomes. Some studies have found that Contoura LASIK may result in better visual acuity and contrast sensitivity compared to wavefront-optimized LASIK, and may also be more effective at correcting higher-order aberrations, which are distortions in the shape of the cornea that can affect vision. However, Contoura LASIK may also be more expensive and may not be suitable for all patients, so it is important to discuss the pros and cons of both procedures with an eye surgeon to determine which one is best for you.

Advanced surface ablation (ASA) is a type of laser eye surgery that is used to correct vision in people who are nearsighted, farsighted, or have astigmatism. It is similar to other laser eye surgery procedures, such as LASIK (Laser-Assisted In Situ Keratomileusis), in that it involves using a laser to reshape the cornea, the clear front part of the eye. However, unlike LASIK, which involves creating a flap in the cornea and using the laser to reshape the underlying tissue, ASA only affects the surface layers of the cornea.

ASA procedures include PRK (photorefractive keratectomy), LASEK (laser-assisted subepithelial keratectomy), and epi-LASIK (epithelial laser-assisted in situ keratomileusis). These procedures are generally less invasive than LASIK and may be a good option for people who are not suitable candidates for LASIK due to thin corneas or other eye conditions.

ASA procedures are typically performed on an outpatient basis and involve the use of a local anesthetic to numb the eye. During the procedure, the surface layers of the cornea are removed using a laser or other method, and the underlying tissue is reshaped to correct vision. After the procedure, a bandage contact lens is usually placed on the eye to protect it and promote healing. The recovery process for ASA procedures may be longer and more uncomfortable than for LASIK, but most people experience a significant improvement in vision after the procedure

Who should not undergo lasik surgery

There are some people who may not be good candidates for LASIK surgery due to certain health conditions or other factors. Some examples include:

People with certain autoimmune disorders: These disorders, such as rheumatoid arthritis and lupus, can affect the healing process and increase the risk of complications after LASIK surgery.

People with certain medications: Certain medications, such as immunosuppressants and certain types of steroids, can also affect the healing process and increase the risk of complications after LASIK surgery.

People with certain eye conditions: LASIK may not be suitable for people with certain eye conditions, such as keratoconus (a condition that causes the cornea to become thin and cone-shaped) or severe dry eye.

People with certain occupations: People who work in certain occupations, such as military pilots or professional athletes, may have specific vision requirements that cannot be met with LASIK surgery.

Pregnant or nursing women: LASIK surgery is generally not recommended for women who are pregnant or nursing because the effects of the procedure on the developing fetus or nursing infant are unknown.

It is important to discuss your specific health and vision needs with an eye surgeon before deciding whether to undergo LASIK/ASA  surgery. The surgeon will be able to assess your suitability for the procedure and discuss any potential risks or complications.

Complications of refractive surgery

LASIK (Laser-Assisted In Situ Keratomileusis) or Advanced Surface Ablation ( ASA) are widely used and generally safe procedure for correcting vision. However in rare instances these procedures may lead to complications. Some possible complications include

Dry eye: LASIK can disrupt the normal tear film that covers the surface of the eye, leading to dry eye symptoms such as irritation, itching, and a feeling of grittiness. These symptoms may be temporary or may persist for several months or longer after the procedure.

Flap complications: In LASIK surgery, a thin flap is created in the cornea (the clear front part of the eye) and then lifted so that the underlying tissue can be reshaped with a laser. Complications related to the flap can occur if the flap is not properly positioned or if it is damaged during the procedure.

Infection: Although rare, infection can occur after LASIK surgery. Symptoms may include redness, swelling, and discharge from the eye.

Vision problems: Some people may experience vision problems after LASIK surgery, such as glare, halos, or double vision. These problems may be temporary or may persist for an extended period of time.

Under- or overcorrection: LASIK may not fully correct vision, or it may result in vision that is worse than before the procedure. In some cases, a second surgery may be needed to correct these problems.

Postlasik kerateectasia: This is a very rare but serious complication which results in protrusion of cornea in post operative period. It may lead to change in refraction and progressive deterioration of vision. Use of glasses or contact lenses might be necessary for vision correction. Corneal collagen cross linking is occasionally performed to arrest progress of disease.

Corneal Haze/ Scarring: Patient undergoing ASA may suffer from corneal haze due to excessive healing response in some cases. It can cause blurring of vision, photophobia, haloes of light at night.

It is important to discuss the potential risks and complications of LASIK surgery with an eye surgeon before the procedure to make an informed decision about whether it is the right option for you.

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