Abstract: The intrastromal corneal ring (ICR) of the invention has a flexible, preferably circular body sized and configured such that it can be inserted into a human eye and comprised of a material which is compatible with human ocular tissue. The end portions of the circular body overlap each other and are formed in several different configurations or embodiments. The end portions are preferably configured such that when allowed to come together they intermesh and provide a ring with a smooth and continuous outer profile.

Abstract: The intrastromal corneal ring (ICR) is adjustable in thickness and has an elongated, flexible, preferably transparent or translucent body which forms a circle. The ICR is of a size such that it can be inserted into a human eye and is comprised of a material which is compatible with human ocular tissue. The thickness of the ring can be adjusted so that it is not necessary to stock a plurality of different rings of different sizes to be used in connection with a method of adjusting the shape of the cornea of the eye. A plurality of different embodiments of ICRs are disclosed each of which are adjustable in terms of their thickness. The thickness may be adjusted prior to the insertion of the ICR into the cornea and may not be further adjustable after insertion.