Implantation of an intraocular Collamer lens for a phacic eye produced by STAAR Surgical (ICL) co. is a modern method of correction of medium and high-grade refractive defects - myopia and hyperopia. The authors evaluate the results of implantation of ICL Staar Surgical in 20 eyes of 13 patients (1 man and 12 women). Their mean age was 31.36 ± 9.21 years and the follow-upperiod 1-54months(mean28.8months±12.42).Thegroupwasdivided into two sub-groups - hyperopia (8 eyes) and myopia (12 eyes). The mean value of refraction before surgery was +5.28D± 2.03and+0.25 Dcyl manifest (in cycloplegia + 7.6 ± 2.28 D) (from 3.75 D to 10.0 D) in the group of hyperopia and -14.25 D±5.68 and -1.81 Dcyl (from -5.5 D to -25.0 D) in the myopic group . The required postoperative refraction was in 17 eyes emmetropia and in 3 eyes residual myopia upto -3.0Dwithregard to incipient presbyopia.Theauthors evaluate the resultant best corrected visual acuity (BCVA), the resultant postoperative refraction, the incidence of postoperative complications and changed density of endothelial cells in the centre of the cornea in the course of time. In the group of hyperopia improvement of the BCVA as compared with the preoperative value occurred by one line in two eyes (25%), in 5 eyes(62.5%) BCVA remained unchanged. In one instance deterioration by one line occurred due to a diminution of endothelial cells in the centre of the cornea after surgery. In the group of myopia in 7 eyes (58.3%) improvement by 1 line occurred, in 2 eyes (16.7%) by 2 lines and in 3 cases (25%) BCVA remained unchanged. The mean value of postoperative refraction in the myopic group in required emmetropia (9 eyes) was -0.77±1.62 D and in required residualmyopia (3 eyes) -1.5 ± 1.32 D. The mean value of postoperative refraction in the group of hyperopia was +0.57 ± 0.5 D for far sight and +1.28 ± 0.58 D for near sight. The most frequent early postoperative complications included keratitis striata in 5, epithelopathy in 3 and residues of viscoelastic material behind the ICL in 3 eyes. As to late postoperative complications, in 2 eyes a change in endothelial cell density was involved, in 12 eyes the syndrome of pigment dispersal and in one eye late decentration of ICL occurred with subsequent anterior subcapsular cataract. The change in density of endothelial cells wasmostmarkedly expressed 3months after surgery in the hyperopic group. The advantage of ICL implantation is rapid postoperative visual rehabilitation, reversibility of the operation, preserved accommodationandsatisfactory stability of the postoperative refraction.

        Key words: posterior chamber lens for phacic eye, Collamer, myopia, hyperopia