Keraring-Intracorneal Ring Segment

Intacs or Intracorneal Ring Segments

Keratoconus is a condition in which the cornea (the clear front surface of the eye) develops  an irregular conical shape, causing your vision to blur. Most people with keratoconus use glasses to correct their vision. If the condition worsens, Rigid Gas Permeable (RGP) or ‘hard’ contact lenses can often solve the problem.

But if you struggle to wear hard contact lenses – perhaps because your keratoconus is severe, or you suffer from dry eyes or allergies- then corneal implants could help.

Intacs corneal inserts or implants are a minimally invasive surgical option used primarily for the treatment of keratoconus.

Intacs can be replaced with different-size implants or removed for good. You have the option of replacing them with new rings at a later date if your prescription changes with age.

If Intacs are removed, vision tends to return to the way it was before surgery within three months. Those receiving replacement Intacs have obtained good visual results as well, and no serious problems with repeating the procedure have been reported.

How Do Intacs Work?

For treating nearsightedness, Intacs correct vision by flattening the cornea to refocus light rays and improve vision. For keratoconus, Intacs work by flattening the steep part of the cornea or cone to reduce vision distortions.

Intacs are made of the same biocompatible material found in intraocular lenses used for cataract surgery, so there is little or no risk of adverse effects from the material.

The procedure takes about 20 minutes and is done under general anesthesia, during the procedure, your surgeon creates a tunnel between layers of the corneal stroma (The cornea's middle layer) , outside of the central optical zone.

The surgeon then chooses the appropriate ring thickness. A thicker ring in Intacs means more flattening of the cornea, which increases the level of vision correction achieved. After one or two crescent-shaped Intacs are inserted into the tunnel, the procedure is over.

Afterwards

After the operation, your eye will be treated with anti-inflammatory and antibiotic eye drops, and a clear plastic shield may also be placed over your eye for you to wear overnight. You’ll be able to go home almost straight away, although you will need someone to drive you, and you’ll need to return for a check-up the following day.

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