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Intralase Assisted Intacs Insertion

Keratoconus is a threatening eye disease which affects 1 in 2,000 patients. Keratoconus occurs when an individual has defective collagen in the cornea, this causes the cornea to sag and drop down. Intacts are used in order to improve the condition of the eye and help heed this condition.

Intralase is the trade name for the femtosecond laser developed by Intralase Corporation in Irvine California. It is currently owned by Abbot medical optics (AMO). This femtosecond laser has pulse duration in the 10-15 second range. The pulses are in near infrared (1053 nm) pulses which are not absorbed by optically clear tissues. Instead they cause optical breakdown of tissue leading to photo disruption. Dr. Khanna has incorporated Intralase femtosecond technology to insert Intacs precisely and thus advanced the treatment of Keratoconus. Intacs as you may recall help in changing the shape of the cornea making it more spherical and bringing the center of the cornea in line with the visual axes. The first step is making the channels with the Intralase laser. Dr. Khanna looks at the topography and the pachymetry maps along with clinical information like manifest and cycloplegic refraction. He then calculates the type of Intacs to be used the width and the depth of the channels and where to place the incision mark. This information is entered into the Intralase the patient is brought into the Intralase room and placed under the laser. The center of the pupil is marked, the suction device is applied and the laser centered. The laser then creates the predetermined channels. The patient is then taken to the operating room.

The eye lashes are draped and an eye retainer is inserted to prevent the lids from blinking. The intact are opened and bathed in antibiotic solution. They are then grasped with special forceps. Sinskey hook is used to lift the lid of the incision and the Intacs are inserted into the channel. Once in proper place the other intact is similarly inserted. Operating kertascope is used to confirm the change in the shape of the cornea. A cross stitch is used to close the incision, antibiotics are instilled and a bandage lens placed over the cornea.

Advantages of using femtosecond laser over mechanical keratomes to create the channels are as follows; the depth of the incision is precise and uniform this is important as corneas with Keratoconus have abnormal collagen and respond asymmetrically to the gliding channel maker. In other words as the mechanical channel maker is gliding it can rise to the surface or deeper. Secondly the width of the channels can be increased for thicker Intacs like the 400 and 450 micron Intacs. Thirdly since the incision and channel are perpendicular to each other the Intacs are less likely to extrude. Lastly the process is faster and more precise and finally less traumatic to the eye.

Please contact Dr. Khanna today to schedule your Intacs consultation.

 





Intacs Disclaimer: Dr. Khanna serves eyecare patients in Los Angeles and surrounding areas. This site is for informational purposes only. It is not intended to be medical advice for those seeking LASIK surgery, but to provide information about the Los Angeles, California LASIK Surgeon, Doctor Rajesh Khanna, M.D.