There are 12 FAQ's (Frequently Asked Questions) in this section.

What are the advantages of Intacs?

KeraVision ® Intacs corneal ring segments are designed to provide many nearsighted people freedom from some of the inconveniences of eyeglasses and contact lenses. In clinical trials, more than half of the patients obtained 20/16 vision or better, which is considered an excellent outcome. Unlike standard surgical treatments, Intacs reshape the cornea without cutting or removing tissue from the central optical zone, the critical area for clear vision.


What if a patient's vision changes?

Intacs are removable, with refractions returning to preoperative levels by three months, in most cases. Removability is an option in the event patients' vision changes with age or if they desire a newer alternative in the future.


Can they dry out or get dirty like a contact lens?

No. Intacs are designed to remain permanently in place within the eye without maintenance.


Can Intacs be seen by the naked eye?

Intacs are barely noticeable to other people and their appearance in the eye is similar to a contact lens.


Who is a candidate for Intacs?

Intacs are recommended for people 21 or older with stable vision and who have mild myopia (nearsightedness) with 1 diopter or less of astigmatism. Vision correction options should be discussed with an eye doctor, who can fully evaluate a patient's vision and answer their questions.


What will this procedure cost?

The cost will be determined by individual ophthalmic surgeons who perform the KeraVision procedure. It will likely be priced similar to other vision correction treatments such as laser refractive surgery.


What are Intacs?

Intacs are a new, non-laser surgical approach to vision correction specifically designed to correct mild myopia (nearsightedness). They provide an alternative to eyeglasses, contact lenses and surgical procedures that permanently alter the eye by cutting or removing tissue from the central optical zone. When placed in the periphery of the cornea, Intacs are intended to reshape corneal curvature without removing tissue from the optical zone, which is the critical area for clear vision. This subtle reshaping is designed to make nearsighted corneas flatter, thereby correcting vision.


What are Intacs made of?

Intacs consist of two tiny, clear, ultra-thin, precision-engineered crescents made of the same medical polymer (polymethylmetha-crylate, or PMMA) that has been safely used in eyes for almost 50 years for contact lenses and the intraocular lenses that cataract patients receive. Intacs are designed for permanent placement in the eye, but they also are removable.


What is involved in the Intacs procedure?

Typically, patients are given a mild oral sedative and eye drops to anaesthetize or numb the eye. A tiny opening, less than 2mm, is made near the upper edge of the cornea beneath the eyelid. Intacs are inserted through this opening so that they rest between the layers of tissue in the cornea, outside the central optical zone. This treatment usually takes about 15 minutes and is performed on an out-patient basis.


How long does it take to recuperate?

The majority of patients notice significantly improved vision the first day after surgery. Most people resume normal activities within two or three days.


How long do Intacs stay in the eye?

Intacs are intended to remain permanently in place without maintenance, yet they can be easily removed by a trained ophthalmic surgeon.


Can Intacs be felt once they are in place?

No. Intacs are not felt because they are placed in the cornea beneath the nerve endings.