[Comparison of ultrasound and hydrodynamic parameters in phacoemulsification].

Unlabelled: Modern phacoemulsifiers have the widest selection of ultrasound parameters. Existing approaches to comparing the settings of the phaco machines have shortcomings and thus cannot be considered objective.

Purpose: To find a technique that would allow objective in vivo evaluation of various ultrasound and hydrodynamic parameters after performing phacoemulsification.

[Long-term results of combined surgery for open-angle glaucoma].

Aim: to comparatively evaluate the hypotensive effect of minimally invasive (type 1) and basic (type 2) subscleral removing of the external wall of Schlemm's canal with subsequent laser trabeculopuncture in patients with open-angle glaucoma (POAG).

Material And Methods: The main group included 60 patients (64 eyes) treated with the minimally invasive technique. The control group included 105 patients (105 eyes), who underwent the type 2 surgery.

[Morpho-physiological features of the human eye sclera as the key unit in the level of intraocular pressure under normal conditions and in glaucoma].

The results of sclera investigations from the positions of morphology, physiology, biomechanics and control-system theory, are summarized. The morphological evidence was obtained supporting the physiological hypothesis stating that the specific anatomical organization and spatial displacement of elastic fiber-containing scleral layers against one another, are the key elements in formation of the individual level of intraocular pressure (IOP) in man both under normal and pathological conditions. It was shown that the elastic fibers outlined the collagen lamallae in of scleral internal layers.

[Photodynamic therapy with visudyne: criteria for treatment success].

The paper specifies indications and success criteria for photodynamic therapy with visudine for classical macular choroidal neovascularization. Three major clinical types of a response to treatment are presented. These include: 1) complete regression of the subretinal neovascular membrane (SNM) with retinal edema resolution; 2) partial regression of SNM with its shift to inactive status that is attended by a significant reduction in pathological transudation from the newly formed vessels; 3) partial regression with the preserved high transudating activity of SNM.

Corneal power determination after previous corneal refractive surgery for intraocular lens calculation.

Purpose: To assess the accuracy of different corneal power determination methods in patients who had undergone myopic laser in situ keratomileusis (LASIK), photorefractive keratectomy (PRK), and radial keratotomy (RK).

Methods: The results for 208 eyes of 116 patients who had had corneal refractive surgery (LASIK, PRK, RK) for myopia were analyzed retrospectively. Keratometry measurements, i.