The present invention relates generally to medicine, in particular to the field of ophthalmology. Background of the invention

Cataract is a clouding or opacification of the natural lens that impedes the rays of light entering into the eye that leads to a decrease in vision.

For nowadays, the most advanced and less traumatic method of surgical treatment of cataract is considered phacoemulsification with foldable artificial intraocular lens implantation (IOL). This method implies emulsification of opaque natural lens with an ultrasonic tip and lens cortex aspiration from the eye, aspirated fluids are replaced with irrigation of balanced solution to maintain the anterior chamber.

The most common complication of cataract phacoemulsification is the posterior capsule opacification, so called "secondary cataract".

Phacoemulsification cannot provide the full aspiration of epithelial cells from the inner surface of lens anterior capsule, over time the part of them migrates to posterior capsule, places between the surfaces of implanted artificial lens' and posterior capsule causing the opacity of the latter.

The artificial foldable IOLs of different modification from different manufactures are been used in the modern cataract surgery. Those IOLs with their optic part and supporting elements are provided for cataract treatment, refractive error correction and, as far as possible, for prevention of posterior capsule opacification.

The "Tek-ClearTM Accomodating IOL" from Tekia Company is well known. This IOL has an optic part and ring-shape supporting element, located around the optics. The supported element is linked to optics with two flexible "bridges", so called "bending beam" allowing the IOL movement during accommodation process when ciliary muscle retracts and relaxes. Optics and supporting elements have the sharp square edge around, creating the mechanical barrier for epithelial cells migration to the posterior capsule. It significantly reduces development of secondary cataract and at the same time capsular bags stayed flexible and sensitive.

The negative part of using this model of IOL is that, implantation of mentioned IOL is quite difficult and does not exclude the complications. includes the 2 modified C-shape elements - C haptics providing the well centration during IOL implantation in capsular bags and close contact of its optic part with the posterior capsule. The overall perimeter of optics and haptics have so called "square edge" impeding the opasification of the posterior capsule, but it still cannot prevent this complication for sure.

The technical result of the presenting invention is creation of the new artificial foldable IOL which can prevent opacification of posterior capsule after cataract surgery and can be implanted easily.

The technical results is achieved by the fact that proposed artificial foldable IOL consisted of optics and more than 2 haptics (C-shaped supporting elements) which are performed with square edge aligned radially towards the optics, are equally spaced from each other and make the whole circle creating the continuous circular sharp square edge when it is implanted in the capsular bag, Each supporting element has at its first arc profile groove in the inner side relevant to optic part radii to touch optic part while supporting element are united in the circle, and the second arc profile groove in the periphery relevant to touching point of outer side of supporting element to touch the previous supporting element while supporting element are united in the circle

According the invention present artificial foldable IOL with modified shape of supporting elements is easy to implant and prevents posterior capsul opacification, as they create double anti PCO barrier.

The attached figures:

Fig. 1 Foldable intraocular lens;

Fig. 2 Foldable intraocular lens;

Fig. 3 Foldable intraocular lens implanted in the capsular bag in final position;

first arc profile groove (4) in the inner side relevant to optic part radii providing its close touch of supporting elements and optics (2). Supporting elements (3) have the second arc profile groove (5) in the periphery relevant to touching point of outer side of supporting element, which touches the previous supporting element.

The artificial foldable IOL is made of flexible material and supporting elements (3) are united when implanted in the capsular bags. The number of supporting elements can be 3, 4 or more. In the initial position (not circled)they are simply configured to place in the special injector (device for IOL implantation). Each following supporting element (3 ) with the special arc profile incision (4) touching optic part (2) and with the special arc profile incision (5) touching the previous supporting element (3) creates the closed circular complementary unit, which is a complementary barrier for the left epithelial cells migration. The optics (2) and supporting elements (3) have the square edge (6) that makes migration of the left epithelial cells of the natural lens to artificial foldable IOL's optics more difficult

The present invention by the shape of supporting elements (3) and united configuration after implantation creates the additional barrier to prevent posterior capsule opacification. _

Touching the optics and each other in the first (4) and second (5) grooves zones supporting elements create additional circular barrier to the residual epithelial cells migration between the posterior surface of the artificial IOL and posterior capsule of the natural lens.

According the invention the artificial foldable IOL is placed in the special injector. It is no traumatic and easy to implant. Its overall complementary configuration in the capsular bag prevents the development of secondary cataract