lenticule

This is determined by the maximum angle at which a ray can leave the image through the correct lenticule.

Fluorescence fades as soon as the lenticule is fully removed.

This ray leaves one edge of an image strip (at the lower right) and exits through the opposite edge of the corresponding lenticule.

If the lenticule is molded in situ onto the cornea its bottom surface will fill any corneal surface irregularity.

The corneal epithelium is removed and a lenticule of donor cornea is grafted on top of it.

If the sheet is not always cut in the same place relative to the first lenticule, a phase error is introduced between the lenses and the image slices.

Selecting the appropriate inner radius of curvature of the molding lens, the upper surface of the formed lenticule can be of variable curvature.

The full removal of the lenticule with photoablation in PTK mode would be expected to reproduce the lenticule's upper surface onto the surface of the cornea.

The corneal transplant surgeon trephines a lenticule of corneal tissue and then grafts the donor cornea to the existing eye tissue, usually using a combination of running and individual sutures.

Its use for masking purposes requires its application onto the corneal stoma at a temperature of 49 C where it can be molded to form a stable lenticule that serves as the final masking agent.

After the removal of the mold, an iris diaphragm having an inner aperture of 5 mm was centrated over the pupil onto the upper surface of the lenticule to define the ablation zone.

When still in liquid form the gel can be molded by means of a rigid contact lens to form a stable lenticule that its upper surface will reproduce the inner surface of the molding lens.

Femtosecond Lenticule EXtraction (FLEX) is a new form of refractive eye surgery similar to LASIK that creates a lenticule for removal and a corneal flap.

Under this consideration the thermal contact of the 49 C preheated PALM gel onto the bare corneal stroma for the in situ molding of the lenticule, would not be expected to induce any irreversible changes of the corneal collagen chains.

The major remaining drawback of the PALM as well as of similar PTK techniques [ 15 ] in order to obtain an optimal refractive result is the accurate centration and placement of the molding lens for the proper formation of the lenticule before irradiation.