| 摘要 |
FIELD: medicine; medical engineering. ^ SUBSTANCE: method involves dilating pupil with mydriatic preparations, making eye incision after applying anesthesia, filling anterior chamber with viscoelastic material and implanting refractive lens into the anterior chamber by means of cannula connected to vacuum source and fixing the refractive lens. Contacting end of the cannula is placed on upper surface of haptic lens part close to optical part. Vacuum fixation is carried out with rarefaction of 100-600 mm of mercury column. Initial lens shape is retained. The lens is sequentially introduced into anterior and posterior eye chamber in horizontal plane above crystalline lens surface. The haptic lens part is placed under iris. Device has cannula as tube curved at an angle with contact end face made from biologically inert material having tension strength of 27 Mpa and has handle connected to rarefaction source. Hollow tube of cannula having round or oval cross-section of 0.5-2.5 mm large diameter and 0.05 mm thick wall is bent at an angle of 110-160°. The cannula is set on bearing surface with its contact end having radial fold curved with radius equal to or greater than 2 times tube diameter. The tube has restrictor on 7-14 mm long segment having conic funnel. It is connected to hollow cylindrical handle having external diameter not less than 5 mm, rough surface and end connecting pipes for making connection to cannula mouth and flexible hose connected to rarefaction source. ^ EFFECT: high reliability, safety and effectiveness of lens implantation. ^ 5 cl, 6 dwg |
