Laser Vision Correction Methods SBK LASIK (Sub-Bowman Keratomileusis).

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Methods of laser vision correction

- innovative technologies
- personalised selection of correction methods
- SBK LASIK - return to normal functioning only a few hours after the surgery

Laser Vision Correction Methods

SBK LASIK (Sub-Bowman Keratomileusis)

This is a more gentle variety of the LASIK method, in which a thinner flap is created. In the traditional LASIK method the flap is 130-180 µm thick (depending on the microkeratome used). In SBK LASIK the use of a special microkeratome head (firm MORIA) One Use - Plus SBK, allows to create a flap that is 90-100 µm thick. The incision is made just underneath the Bowman capsule, which enables a considerable sparing of the corneal cells and leads to benefits that have never before been possible. SBK is currently the safest and the most comfortable variety of the LASIK method. The surface of the proper substance of the cornea, also called the steep surface, is much smoother on microscopy and better preserved following SBK LASIK than following procedures using other methods. SBK LASIK is even more advantageous than the FemtoLASIK (the same name - IntraLase or iLASIK) method, where the flap is created with the use of a femtosecond laser. Only apparently incision with a laser, so without the use of a knife, seems better. Detachment of the superficial layer of the cornea from the proper substance results from an explosion of thousands of tiny gas bubbles, which is similar to the way Velcro works. Separation of individual corneal layers takes a minute when FemtoLASIK (the same name - IntraLase or iLASIK) method is used and two seconds in the case of SBK LASIK.

The most important advantages of SBK LASIK is the rapid and painless regeneration period. Most patients regain sharp vision within several hours and have no symptoms. Sensitivity to light considerably decreases and there are fewer cases of dry eye in the first period after surgery. In addition, the thin flap offers a chance of getting rid of the refractive error to patients, who cannot undergo laser vision correction due to a thin cornea, marked myopia or both. 

LASEK (Laser Subepithelial Keratomileusis)

LASEK is the method generally used in patients with excessively thin corneas and when other methods are contraindicated for some reason. LASEK involves the application of an alcohol solution, which softens and detaches the superficial layer of the corneal epithelium for the duration of laser operation. Next, the operator precisely repositions the epithelium and applies contact lenses as a dressing, which are to be worn for 4-7 days. Then, at the follow-up visit, the doctor removes the lenses. The very procedure is painless and performed in eye drop anaesthesia. Pain may appear several hours after surgery and persist for up to 3-5 days. Patients are advised to take the painkillers they were provided with by the staff after surgery. Anti-inflammatory drugs and antibiotic-containing eye drops are to be taken as directed by the doctor, generally for up to 14 days. Rewetting drops are to be sued for 1-2 months. Patients may resume their everyday activities within 3-6 days, strictly following the doctor’s directions. Visual acuity improves gradually with normal vision generally appearing within 2-4 weeks.

TransPRK (Photorefractive Keratectomy)

Characteristical for TransPRK is the removal of the epithelium with an excimer laser, that’s why the method is called ‘contactless’. It is a modifcation of method – PRK. This method is used in case of leaving scars on the cornea after injury. Modelling of the shape of the cornea is done with the same laser, which removes the epithelium. Although no additional tools are used during ths procedure, an eyelid speculum is applied beforehand. After leser ablation an operator applies contact lenses as a dressing, which are to be worn for 4-7 days. Then, at the follow-up visit, the doctor removes the lenses. The procedure is painless and performed in eye drop anaesthesia. Pain may appear several hours after surgery and persist for up to 2-4 days. Patients are advised to take the painkillers they were provided with by the staff after surgery. Anti-inflammatory drugs and antibiotic-containing eye drops are to be taken as directed by the doctor, generally for up to 14 days. Rewetting drops are to be sued for 1-2 months. Patients may resume their everyday activities within 3-6 days, strictly following the doctor’s directions. Visual acuity improves gradually with normal vision generally appearing within 2-4 weeks.

The method is selected by the doctor based on test results and medical history. All the benefits and contraindications related to individual methods will be discussed with the patient before surgery.