Abstract: An intraocular lens comprises a UV-absorbing optic lens made of a polymer composition having the following light transmission spectrum in its visible postion at the following wavelengths: 400 nm, 10 to 27 percent of light transmission; 420 nm, 21 to 37 percent; 440 nm, 37 to 55 percent; 460 nm, 52 to 63 percent; 480 nm, 70 to 78 percent; 560 nm, 85 to 90 percent; 520 to 650 nm, 90 to 95 percent, and incorporating ingredients taken in the following mass percent ratio:______________________________________ UV-absorbing material 1.65 to 3.0 (4-alkoxy-2-hydroxybenzophenone or tetraoxybenzophenone) fat-soluble dye-4-(2,4-dimethylphenylazo)- 0.011 to 0.016 5-methyl-2-phenyl-1,2,3-triazole dibutylphthalate 4.8 to 5.0 polymethylmethacrylate to make up 100%.

Abstract: A device for ophthalmologic operations comprised of a holder (1), a cutting nstrument (9) provided with a catch (10) and secured on a spring-loaded rod (7) accommodated inside of the holder (1) and having a micrometric thread (11) on the other end. Mounted on the holder (1) by means of a micrometric thread (15) is a thrust bushing (14) which carries the catch which fixes the position of this bushing (14) and is interconnected with a nut by which the rod (2) is moved.

Abstract: A posterior-chamber intraocular prosthetic lens includes an optical lens (1) and two diametrically opposite supporting elements (2), each of the supporting elements (2) being shaped as a curvilinear body one of its lateral surfaces being convex and facing with its convex portion (3) in a direction opposite to the lens principal plane, while the other lateral surface of the body is cancave and faces with its concave portion (4) toward the lens (1) principal plane; the ends of the supporting elements (2) are rounded off and face each other, while the supporting elements (2) are spatially turned away from each other with respect to the principal plane of the optical lens.

Abstract: An optical lens is secured to supporting setting platforms, of which one is formed by a circumferential sector conjugated with the optical element (lens) so as to form shoulders. The other of said platforms is formed by two rounded-off radial portions conjugated with each other and with the optical element. Both of the platforms have biconcave surfaces, and one of these is thicker than the other.

Abstract: An intraocular lens is disclosed in which the support part is made of a cellular material having closed voids to ensure buoyancy of the lens.

Abstract: The invention generally relates to medicine, but more particularly, to an strument for making corneal incisions useful, for example, in the surgical treatment of myopia.The instrument disclosed herein includes a case, a holder of a cutting member being mounted within the case for reciprocation relative thereto. The holder is provided with a lock member for a cutting member at one end thereof, its opposite end accommodating a stem engaging a screwnut type drive urging said holder into motion. A stop is mounted on the case anteriorly relative to said holder. According to the invention, the portion of the holder facing the stop which is rectangular in cross-section, is preferably provided with a rectangularly fashioned groove along with a lever clip mounted therein, to secure the cutting member in position.

Abstract: The invention relates to ophthalmology and, more particularly, to a corneal ncision marker adapted for use in surgical treatment, notably that of myopia.An instrument of this invention comprises a case in the form of a bush accommodating a sight, and plates in planar arrangement at right angles to the plane of the sight. The plates are brought into contact with the cornea leaving indentations which serve as guidelines to perform incisions. According to the invention, each plate is mounted on a separate holder, the latter being attached movably radially with respect to the bush, the holders being rigidly secured in their entirety to said bush, and provision is made for a drive to effect smooth synchronized movement of the plate holders.