Sample: Technical, Training Manual

[2. Excerpt from surgeon training manual, medical device ] Intacs act as passive spacing elements that change the arc length of the anterior corneal curvature. The refractive effect achieved by the device is directly related to the thickness of the product. Placing the product in the periphery of the cornea causes local separation of the corneal lamellae that results in a shortening of the corneal arc length. This “shortening” of the corneal arc length has a net effect of flattening the cornea, thereby correcting for myopia by lowering the optical power of the eye. When the thickness of Intacs is increased, greater amounts of local separation occur that result in increased corneal flattening. Thus, the degree of corneal flattening—or correction—achieved by Intacs is directly related to thickness.