193 research outputs found
Current approaches to residual astigmatism correction after phacoemulsification
No full text
M.M. Bikbov, O.I. Orenburkina, A.E. Babushkin, A.M. Tulyakova
Ufa Research Institute of Eye Diseases, Ufa, Russian Federation
Residual astigmatism or ametropia are relatively common after phacoemulsification. This entity is accounted for by inaccurate intraocular lens (IOL) power calculation or improper preoperative examination. As a result, target refraction is not achieved. Spectacle correction of astigmatism in pseudophakia has several drawbacks and is often poorly tolerated, leaving patients unsatisfied with surgical outcomes.
This paper reviews state-of-the-art surgical techniques for correcting residual astigmatism after cataract surgery. These include laser (photorefractive keratectomy/PRK and laser in situ keratomileusis/LASIK), Femto laser (arcuate keratotomy), and intraocular (add-on toric IOL implantation) procedures. The authors address published data on the pros and cons of these interventions. These techniques empower surgical correction of astigmatism and provide the best possible vision for patients. Finally, this paper discusses postoperative management using tear substitutes.
Keywords: phacoemulsification, residual astigmatism, PRK, LASIK, femtosecond arcuate incisions, add-on toric IOLs.
For citation: Bikbov M.M., Orenburkina O.I., Babushkin A.E., Tulyakova A.M. Current approaches to residual astigmatism correction after phacoemulsification. Russian Journal of Clinical Ophthalmology. 2022;22(1):51–57 (in Russ.). DOI: 10.32364/2311-7729-2022-22-1-51-57.
</p
Effects of refraction and axial length on the development and progression of diabetic retinopathy
No full text
M.M. Bikbov, O.I. Orenburkina, A.E. Babushkin, A.A. Fakhretdinova
Ufa Research Institute of Eye Diseases, Ufa, Russian Federation
Eye disorders have a special place in diabetes since visual impairment has a significant effect on the quality of life. Therefore, determining risk factors and prognostic criteria for disease course are essential for developing strategies for early prevention of diabetic retinopathy (DR). This paper addresses studies on various aspects of DR in patients with myopia. It was demonstrated that DR arises, develops, and progresses in different ways under various axial lengths (AL). Thus, many authors report that DR barely occurs in high myopia. Some of them account for this phenomenon for poor blood circulation in a long myopic eye. Others refer to a significantly lower vascular endothelial growth factor (VEGF) concentration in longer eyes or eyes with myopic refraction. The third authors argue a focal disintegration of retinal pigment epithelium to eliminate metabolic end products through the choroid and sclera. As a result, neither acidosis nor venous congestion develops, and end othelial barrier function remains unaffected
Keywords: diabetic retinopathy, myopia, axial length, vascular endothelial growth factor, emmetropia, hyperopia, diabetes.
For citation: Bikbov M.M., Orenburkina O.I., Babushkin A.E., Fakhretdinova A.A. Effects of refraction and axial length on the development and progression of diabetic retinopathy. Russian Journal of Clinical Ophthalmology. 2021;21(4):205–209 (in Russ.). DOI: 10.32364/2311-7729-2021-21-4-205-209.
<br
Combined surgery for large macular hole in complicated cataract: case report (retracted article)
No full text
M.M. Bikbov, O.I. Orenburkina, A.A. Zinnatullin, A.L. Yarmukhametova, A.E. Babushkin, M.R. Kalanov
Ufa Research Institute of Eye Diseases of the Bashkir State Medical University, Ufa, Russian Federation
The only effective treatment for macular holes (MH) is surgery. Published data demonstrate that surgery (vitrectomy, internal limiting membrane/ILM peeling, and vitreous tamponade) of small and medium MHs is usually highly effective. Meanwhile, good outcomes and a high recurrence rate of large MHs postoperatively remain challenges. The authors propose a surgical technique for MHs in complicated cataracts (patent of the RF No. 2731794 dated 09/08/2020) that involves vitrectomy, posterior hyaloid removal, ILM staining, ILM peeling, formation of a flap from the anterior lens capsule to close MH, and air tamponade. This paper describes a woman who underwent combined surgery for cataract and MH as described. The technique provided a complete and stable anatomical outcome. After 1 month (i.e., after complete resorption of air), the best-corrected visual acuity of the right eye increased to 20/40. IOP was 19.0 mm Hg.
Keywords: vision, idiopathic macular hole, retina, anterior les capsule, surgery, postoperative follow-up.
For citation: Bikbov M.M., Orenburkina O.I., Zinnatullin A.A., Yarmukhametova A.L., Babushkin A.E., Kalanov M.R. Combined surgery for large macular hole in complicated cataract: case report. Russian Journal of Clinical Ophthalmology. 2023;23(3):152–156 (in Russ.). DOI: 10.32364/2311-7729-2023-23-3-7.
</p
The rate of eye comorbidities in patients with cataracts (results of a population study)
No full text
M.M. Bikbov1, O.I. Orenburkina2, T.R. Gilmanshin1, A.E. Babushkin1
1Ufa Research Institute of Eye Diseases of the Bashkir State Medical University, Ufa, Russian Federation
2Russian Center for Eye and Plastic Surgery of Eye Diseases of the Bashkir State Medical University, Ufa, Russian Federation
Aim: to assess the prevalence and characteristics of various types of cataracts and to analyze most common eye comorbidities from the population study "Ural Eye and Medical Study" (UEMS).
Patients and Methods: this population study included 5899 individuals (3400 living in the rural area and 2499 living in the city). Eye examinations included uncorrected and best-corrected visual acuity measurements, autorefractometry, slit lamp examination, A-scan ultrasound biometry, non-contact tonometry, fundoscopic examination, corneal topography, fundus photography, static perimetry, and optical coherence tomography.
Results: cataracts were diagnosed in 2616 patients (44.3%). These patients were more commonly rural residents and women. Nuclear cataracts (n=1575, 60.2%) were detected 1.5 times more often than cortical cataracts (n=1041, 39.8%). Eye comorbidities were diagnosed in 975 patients (37.3%). The most common eye comorbidities were retinal diseases. Among them, age-related macular degeneration (AMD) ranked first (13.46%). Glaucomatous optic neuropathy (GON)/glaucoma) and myopic macular degeneration/myopia were also common (6.77% and 4.93%, respectively). Diabetic retinopathy (DR) was reported less common (2.26%). The rate of eye comorbidities in patients was 43.6% in cortical cataracts and 33.1% in nuclear cataracts. As to individual conditions, the greatest difference was reported for AMD rate (19.12%) and macular hole/MH (1.8%), which were diagnosed twice more often in cortical cataracts (p<0.05) than in nuclear cataracts (9.71% and 0.8%, respectively).
Conclusion: the structure of eye comorbidities in patients with nuclear and cortical cataracts was almost similar to that in patients with cataracts overall. However, the rate of eye comorbidities in patients with cortical cataracts was significantly higher than in patients with nuclear cataracts. This particularly applies to AMD and MH. In general, the rate of AMD, GON, DR, and MH in patients with complicated cataracts increases with age. These diseases were most often diagnosed in women and urban residents, except for AMD (more patients with AMD live in rural areas).
Keywords: cataract, nuclear, cortical, eye comorbidities, population study.
For citation: Bikbov M.M., Orenburkina O.I., Gilmanshin T.R., Babushkin A.E. The rate of eye comorbidities in patients with cataracts (results of a population study). Russian Journal of Clinical Ophthalmology. 2023;23(3):146–151 (in Russ.). DOI: 10.32364/2311-7729-2023-23-3-6.
<br
Dynamics of epidemiological indicators of glaucoma in the Republic of Bashkortostan for the period of 2010–2016
No full text
M.M. Bikbov, A.E. Babushkin, I.I. Khusnitdinov, L. Kh. Murova, E.N. Matyukhina
Ufa Eye Research Institute of the Academy of Sciences, Ufa, Russian Federation
Aim: to study the main epidemiological characteristics of glaucoma in the Republic of Bashkortostan (RB) over 2016 compared to 2010.
Patients and Methods: studies were conducted on the basis of data from the annual statistical reports of ophthalmologists of cities and districts of the RB, as well as of the Ufa Eye Research Institute of the Academy of Sciences and the “Main Bureau of Socio-Medical Expertising on the Republic of Bashkortostan”.
Results: in the RB in 2016, at regular medical check-up with glaucoma, 30 508 people were recorded (with POAG — 81.4%), of which 74.9% of patients were over the age of 60, and 75.2% had stage I–II of the disease. The rate of patients with suspected glaucoma was 1.3%, with the diagnosis already established — 0.6%, and in the vast majority of cases (82.8%), these patients had stage I or II.
By 2016, an increase in the rate of patients (by 24.3%) registered at regular medical check-up, in the prevalence (46.8%) and the incidence (35.6%) of POAG was recorded against the background of a decrease in the number of people with primary disabilities due to glaucoma (from 346 to 242).
Conclusion: comparative analysis over 2010 and 2016 showed that in the RB over the seven specified years, the number of patients with glaucoma increased from 24,536 to 30,508 people, while the prevalence and incidence of the most frequently diagnosed POAG increased from 114.6 to 168.3 and from 12.9 to 17.5, respectively (per 10 thousand of population in people over 40). The absolute number of people with primary disabilities with glaucoma was reduced due to high coverage of the population with annual preventive examinations with an increasing number of identified patients suspected of having this disease (6304 vs. 7685) and its primary detection at the initial stages, an increase of antiglaucoma operations (including those performed using drains and non-penetrating technology), a broader purpose and use of modern and effective anti-hypertensive drops, first of all, prostaglandins (2 times) and fixed combinations (1.5 times). In the course of conducted analysis, there was a decrease in patients, who underwent surgical treatment (from 27.9% to 23.7%), blind in one and both eyes (from 17.3% to 12.6%). Besides, a tendency to an increase among the patients with glaucoma in the caliber of women (from 56.1% to 63.8%) and those under 60 years of age (from 23.2% to 25.9%) was established.
Key words: glaucoma, Republic of Bashkortostan, epidemiological indicators, primary open-angle glaucoma, prevalence, morbidity, primary disability.
For citation: Bikbov M.M., Babushkin A.E., Khusnitdinov I.I. et al. Dynamics of epidemiological indicators of glaucoma in the Republic of Bashkortostan for the period of 2010–2016. RMJ “Clinical ophthalmology”. 2018;4:163–167.<br
Extremely small incisions 25G in surgery of congenital cataracts complicated with microphthalmia in children of the first year of life
No full textABSTRACT
Purpose. Aim of the work was a comparative study of the results of cataract surgery with IOL implantation in children with congenital cataracts, complicated with microphthalmia operated on in the age from 1 to 12 months using the 20G and 25G technology.
Materials and methods. A comparative study of cataract extraction with IOL implantation and pars plana removal of posterior capsule with a limited anterior vitrectomy were performed in 54 children with congenital cataracts, complicated with microphthalmia operated on in the age from 1 to 12 months (79 eyes). The children were divided into two subgroups: in the first group after the IOL implantation the pars plana removal of posterior capsule with a limited anterior vitrectomy 20G was carried in 26 children (41 eyes), and in the second group - with an access through pars plana using extremely small incisions 25G (28 patients, 38 eyes).
Results. In the first subgroup in the early postoperative follow-up the complication rate was higher due to a more frequent occurrence of hyphema and a development of inflammatory reaction, the difference is statistically significant (34.1 and 10.5% respectively, p<0.01).
Conclusions. The use of ultra-small accesses 25G, for the posterior casulectomy with the anterior vitrectomy after IOL implantation allows to reduce the quantity of early postoperative complications after removal of congenital cataracts, complicated with microphthalmia
Combined approach to the surgical treatment of patients with prolifera-tive stage of diabetic retinopathy
No full textPurpose: to evaluate the effectiveness of combined surgical treatment in patients with proliferative stage of diabetic retinopathy. Material and Methods. 52 patients with advanced stage of proliferative diabetic retinopathy who were divided into 2 groups were examined. Group 1 consisted of 30 patients with a preliminary intravitreal injection of ranibi-zumab, followed by vitrectomy In group 2, 22 patients underwent vitrectomy without anti-VEGF therapy. Visual acuity in the 1st group before treatment was 0.04±0.02, in the second 0.05±0.03. The thickness of the retina in the foveolar zone of the 1st group was 358±34 urn, in the second 378±44 urn. Height of the complex "PHM with fibro-glial proliferation — retina" 670±38 and 710±30, respectively. Results. The visual acuity after treatment increased 4.2 times (group 1), in comparison with the results of the second group by 2.5 times. In patients of the 1st group intraoperative hemor-rhagic manifestations were observed in 36.6% of cases, in the 2nd group in all patients. An increase in the height of the complex "PHM with fibro-glial proliferation — retina" was noted in 83.3% in patients of the 1st group one month after the injection. The height of the complex increased on average to 153±25 urn, which in 76.6% increased the traction effect on the retina. The neovascularization regression occurred 4-8 days after ranibizumab injection in group 1 patients. The retinal thickness of the central zone 10 months after vitrectomy decreased to 220±10 urn in the 1st group and to 273±14 urn in the 2nd group, respectively. Conclusion. The use of inhibitors of angiogenesis, in particular ranibizumab, as a preoperative preparation of patients with proliferative stage of diabetic retinopathy reduces the risk of intra- and postoperative hemorrhagic complications, which facilitates the implementation of vitrectomy, avoids additional vitreo-retinal interventions, in connection with which a positive functional result remains.</p
The results of the intrastromal corneal segments (Keraring) implantation for keratoconus
No full textABSTRACT
Purpose. The aim of the study was to evaluate functional results of Keraring implantation with for keratoconus.
Material and methods. Keraring implantation were performed in 46 patients (52 eyes) aged from 16 to 49 years, with progressive keratoconus of the degree I-III of Amsler classification with intolerance of contact correction. To assess the results before and after operation the patients received standard and special methods of research: computer keratotopography («ODP-scan», Nidek, Japan), optical coherence tomography («OCT-3», Visante, Germany), corneal confocal microscopy (Heidelberg Retinal Tomographer HRT-III, «Heidelberg Engineering» (Germany) in pre- and post-operative follow-up: 10 days, 1, 3, 6 and 12 months.
Results. Uncorrected visual acuity increased from 0.14±0.03 to 0.45±0.15, immediately after the operation. Keratometry value decreased from 54.27±0.91D to 43.61±1.24D. The magnitude of corneal astigmatism decreased from 6.45±1.23D pre-operatively to 4.25±0.96D one month after surgery, with a gradual decrease to 2.91±0.42D and 2.5±0.22D at 6 months and a year after implantation.
Conclusions. The intrastromal corneal segments Keraring implantation is a technically simple, effective method of keratoconus treatment, which allows to adjust the associated keratoconic ametropia
- …
