Saratov JOURNAL of Medical and Scientific Research

ZAO Optimedservis

Ocular rosacea: etiology, pathophysiological mechanisms, clinical manifestations and main methods of treatment

Year: 2018, volume 14 Issue: №4 Pages: 946-949
Heading: Ophtalmology Article type: Review
Authors: Mustafina G.R., Khismatullina Z.R., Sattarova R.R.
Organization: Bashkir State Medical University of the Russian Health Care, ZAO Optimedservis
Summary:

The review of the literature covers etiology, pathophysiological mechanisms, clinical manifestations and the main methods of treatment of ocular rosacea. Rosacea is one of the common chronic skin diseases with a diverse clinical picture. Ophthalmological manifestations of the disease are associated with affect to the cornea, conjunctiva and eyelids. The etiology and pathogenesis of the disease is not fully understood currently. Pathological processes in ocular rosacea are associated with disorders in vascular, immune and nervous systems, as well as with the influence of a number of microorganisms. In the treatment of ocular rosacea drugs of local and systemic action are used. Systemic therapy includes tetracycline and macrolide antibiotics and angioprotectors. Local therapy is associated with the use of artificial tears, anti-inflammatory drugs and local antibiotics. In severe cases of ocular rosacea surgical management is required.

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Thermal imaging characteristics of ultrasonic and pneumatic guillotine 25 gauge vitrectors

Year: 2018, volume 14 Issue: №4 Pages: 916-919
Heading: Ophtalmology Article type: Original article
Authors: Aznabaev В.М., Dibaev T.N., Mukhamadeev T.R., Vafiev A.S., Shavaliev I.Kh.
Organization: Bashkir State Medical University of the Russian Health Care, ZAO Optimedservis
Summary:

Purpose: to analyze thermal characteristics of ultrasonic and pneumatic guillotine 25G vitrectors in the experiment. Materials and Methods. In vitro studies were performed using Testo 882 thermal imager under various conditions for a more complete assessment of thermal characteristics of 25G ultrasonic vitrector and 25G pneumatic guillotine vitrector. First experiment was carried out in normal saline solution of room temperature, second experiment was performed in air medium. Results. It was found that during operation of ultrasonic and pneumatic guillotine vitrectors, the temperature threshold of 45°C, which is critical for thermal damage to retinal tissue, was not reached in all experiments. Under severe conditions (working in the air medium without cooling of vitrector tip), different localization of the heating zone in ultrasonic (at proximal part of the needle) and pneumatic (at distal part, near the port) vitrectors was detected. Conclusion. In experimental conditions, the thermal safety of ultrasonic and pneumatic guillotine vitrectors of caliber 25G has been proved by the method of infrared thermal imaging.

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Autonomous device for registration of direct current potential of eye in experiment and clinic

Year: 2018, volume 14 Issue: №4 Pages: 910-913
Heading: Ophtalmology Article type: Author's opinion
Authors: Mukhamadeev T.R., Yamgutdinov R.R., Vafiev A.S., Kalmetyev A.Kh., Yamlikhanov A.G., Tumashinov V.N.
Organization: Bashkir State Medical University of the Russian Health Care, ZAO Optimedservis
Summary:

 The article presents an autonomous device for recording of direct current potential of eye at rest and at different illumination levels to assess the functional state of the photoreceptor— retinal pigment epithelium complex in experiments on laboratory animals and in clinical practice including vitreoretinal surgery.

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The analysis of microcirculation parameters of the macular area after ultrasonic vitrectomy using optical coherence tomography-angiography

Year: 2018, volume 14 Issue: №4 Pages: 856-862
Heading: Ophtalmology Article type: Original article
Authors: Aznabaev В.М., Dibaev T.l., Ismagilov T.I..
Organization: Saratov State Medical University, ZAO Optimedservis
Summary:

Purpose: to analyze the parameters of the microcirculation of the macular area in patients operated on by the method of ultrasound vitrectomy 25G for idiopathic through macular opening (IMO) and epiretinal fibrosis (ERF). Material and Methods. ОСТ angiograms of 35 patients operated on by ultrasound vitrectomy for idiopathic through macular opening (IMO) and epiretinal fibrosis (ERF) before and for 3 months after surgery were analyzed. The following parameters of microcirculation of the retina were investigated: the area of the foveal avascularzone (FAZ), the density of the foveal vessels in the ring 300 urn around the FAZ, the density of the vessels in the superficial and deep capillary networks of the retina. Results. The FAZ area with IMO decreased within 3 months, while with ERF an increase in this parameter was recorded (p<0.05). In the superficial capillary network in both pathologies there was a decrease in the density of the vascular pattern (p<0.05), in IMH there was a tendency to recovery to the pre-op values. The deep capillary network was characterized by decrease of vascular pattern density to 1 month with following increase to 3 month (p<0.05). Conclusion. Features of the dynamics of the parameters of the microcirculation of the macular area in different periods of the postoperative period largely depend on the nature of the pathology, the stress response of the tissue to the operative traumaand the degree of recovery of the vascular pattern of the retinal neuroepithelium in the superficial and deep capillar networks.

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Clinical and functional results of surgical treatment of regmatogenous retinal detachment by ultrasonic vitrectomy 25G

Year: 2018, volume 14 Issue: №4 Pages: 841-845
Heading: Ophtalmology Article type: Original article
Authors: Aznabaev В.M., Dibaev T.I., Mukhamadeev T.R., Shatunova A.S.
Organization: Bashkir State Medical University of the Russian Health Care, ZAO Optimedservis
Summary:

Objective: to analyze clinical and functional outcomes of surgical treatment regmatogenic retinal detachment by ultrasound vitrectomy. Material and methods. Clinical and functional results of treatment of 70 patients (70 eyes) with regmatogenous retinal detachment (ROS) who received surgical care in the clinic OPTIMIZED from 2015 to 2018 In the main group (n=33) operations were performed by ultrasound vitrectomy 25G, in the control group (n=37) — by traditional guillotine pneumatic vitrectomy using the tools of the same caliber. During surgery, were analyzed: time of vitrectomy stage (sec), total duration of operation (min), achievement planned anatomical result (%). In the postoperative period (up to 12 months) analyzed: stability of anatomical result (%), maximum corrected visual acuity, intraocular pressure, morphometric criteria retinal conditions (OCT, OCT-angiography), incidence of complicated cataract (%). Results. Average value of vitrectomy stage time in the main group (378.3±125.2 sec) lower than in the control (490.9±175.5 sec), p<0.05. Total duration operations in both groups did not differ, but on average was somewhat shorter in the main group. group (53.6±9.4 and 64.2±23.5 min, respectively). Planned anatomical result in retinal adhesion in all sectors was achieved at the end of the operation in 100% of cases in both groups. No intraoperative complications were recorded in any of the cases. Ultrasonic vitrectomy permits the use of smaller values of the vacuum as on the stage initiation of posterior vitreous detachment (333.3±40.1 mm Hg).St) and at the stage of peripheral vitrectomy (203.2±51.5 mm Hg.art.) compared with traditional vitrectomy, where high vacuum was required: 600 mm Hg.art. at the stage of initiation of ZOST, 305,4±66,4 mm Hg.article on stage of peripheral vitrectomy. The anatomical result remained stable in all terms of the postoperative period in the main group in 100% of cases. In control group relapses of retinal detachment were registered in 8.1% of patients and successfully eliminated conducting an audit of the vitreous cavity. In the late postoperative period the most frequent complication was the development of complicated cataracts (27.1 % in the main group, 40.5% in the control). In both groups, by the 12th month of follow-up, high maximum corrected visual acuity (0.5 and higher in 66.6% of patients and in the main 47.3% of patients in the control group). Conclusion. Comparative study conducted the method of ultrasonic vitrectomy in the surgical treatment of rhegmatogenous detachment the retina has shown that this technique is an effective method that provides and stable anatomical and functional result.

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Experimental analysis of destructive ability of vacuum pulsation in cataract phacoemulsification

Year: 2018, volume 14 Issue: №4 Pages: 817-820
Heading: Ophtalmology Article type: Original article
Authors: Aznabaev В.М., Dibaev T.l., Mukhametov R.G.
Organization: Bashkir State Medical University of the Russian Health Care, ZAO Optimedservis
Summary:

 The purpose of the work. To evaluate the destructive ability of vacuum pulsation in cataract phacoemulsification. Materials and Methods. The experiments were performed on 40 separate pig eyes, in which cataract was induced in 3 stages of density according to the WetLab method. In the study group (n=20), phacoemulsification was carried out using a vacuum pulsation generation unit, in the control group (n=20) by the method of traditional ultrasonic phacoemulsification. For comparison of the two methods in both groups, the time of complete destruction of the lens fragment in seconds was recorded. Results. The average time of destruction of a 5x5 mm fragment of the lens, using vacuum pulsation was 23.6±4.9 seconds, for traditional ultrasonic phacoemulsification 17.7±8.9 seconds (p<0.05). Vacuum pulsation has a destructive power, but at the same time requires further refinements to increase the efficiency of phacoemulsification. Conclusions. Phacoemulsification based on vacuum pulsation is promising for further study, since it has a destructive ability. This method does not imply the use of high-energy effects, due to which there are no prerequisites for heating the tunnel incision and negative effects on the corneal endothelium.

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Clinical performance of system for ultrasonic cortex aspiration during phacoemulsification

Year: 2018, volume 14 Issue: №4 Pages: 811-815
Heading: Ophtalmology Article type: Original article
Authors: Aznabaev В.М., Dibaev T.I., Mukhamadeev T.R., Idrisova G.M.
Organization: Bashkir State Medical University of the Russian Health Care, ZAO Optimedservis
Summary:

Purpose: to study the performance and safety of the use of system for cortex aspiration with the possibility of additional dosed low power ultrasound during phacoemulsification. Material and Methods. The comparative evaluation of developed system for cortex aspiration with the possibility of additional dosed low power ultrasound (main group, n=36, ophthalmological surgical platform Optimed Profi) and the traditional system for cortex aspiration (control group, n=40, ophthalmological surgical platform Centurion Vision System) were performed. Results. Using the system for cortex aspiration decreases mean time of cortex aspiration. In the main group the mean time of cortex aspiration was 72.6±24.3 s, in the control group 93.9±48.0 s (p<0.05). Intraoperative complications were not observed in the main group. Posterior capsule rupture was detected during the cortex aspiration in 1 patient (2.5%) in the control group. Conclusion. The system for cortex aspiration with the possibility of additional dosed low power ultrasound allows decrease the time of cortex aspiration, to create conditions for a safer removal of cortex, compared with traditional technology.

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