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Purpose To assess refractive outcomes of phacoemulsification (PE) with additional capsular tension ring (CTR) implantation. Material and methods In total, 37 eyes of 37 patient who underwent PE with intraocular lens (IOL) implantation were divided into 2 groups: study group (n = 18) with CTR co-implantation (inclusion criteria was preoperative irido-phacodonesis) and control group (n = 19) without CTR. Optical biometry (IOL-Master 500) was performed for each patient before PE. Barrett Universal II Formula was used for IOL calculation. IOL power calculation error was assessed by comparing target refraction and final refraction measured by Topcon-8800 autorefractometer 1 month after surgery. Results Despite almost identical preoperative values in both groups refractive result was different. Patients with CTR co-implantation had more hyperopic IOL power calculation error of 0.41 ± 0.52 D versus 0.04 ± 0.59 D in the control group (p = 0.043). Postoperative spherical equivalent in study group was more hyperopic (−0.40 ± 1.47 D) than in control group (−0.77 ± 1.24), nevertheless, this difference was insignificant ( p = 0.166). Conclusion CTR co-implantation in patients with weak zonules and preoperative irido-phacodonesis leads to more hyperopic IOL power calculation error compared with control group.

This paper reviews current aspects of antibacterial prophylaxis of acute endophthalmitis, a dangerous complication of cataract surgery. The lack of a common standard for preventing phaco infectious complications, a growing number of resistant bacterial strains, and legal aspects of the lack of some antibiotic formulations and routes of their administration with established efficacy in Russia account for the importance of this issue. The authors provide a list of primary causative agents of endophthalmitis and specify their antimicrobial susceptibility, highlight the importance of using antiseptics to prevent endophthalmitis, and describe in detail routes of administration of antibiotics, including conventional ones (subconjunctival injections, topical use) and whose actively promoted (intracameral, transzonular). In conclusion, the authors suggested a rational antimicrobial preventive algorithm for endophthalmitis after phaco based on the analysis of recent Russian and foreign published data and adapted to the Russian health care system. Keywords: phacoemulsification, endophthalmitis, antiseptic, antibiotic, prophylaxis, antibacterial resistance, fluoroquinolones, aminoglycosides, povidone-iodine, intracameral administration. For citation: Nikolaenko V.P., Belov D.F. Antibiotic prophylaxis of acute postoperative endophthalmitis. Russian Journal of Clinical Ophthalmology. 2021;21(4):220–226 (in Russ.). DOI: 10.32364/2311-7729-2021-21-4-220-226.

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Aim to compare intraocular lens (IOL) power calculation before and after different types glaucoma procedures. Material and methods.Into the study, 115 patients were included, divided into 3 groups: group 1 patients, in whom sinustrabeculectomy was performed (n= 86); group 2 patients with implanted Ex-PRESS shunt (n= 19), group 3 patients after Ahmed glaucoma valve implantation (n= 10). For each patient before surgery optical biometry (IOL-Master 500) was performed and IOL power calculation using Barrett Universal II Formula (target refraction emmetropia). Baseline data were compared with corresponding examinations results obtained in 6 months after glaucoma procedure, to evaluate its effect on main biometric parameters of the eye and the IOL calculation accuracy. Results.Despite significant changes of optical and anatomic indices, mean values of target refraction before and after glaucoma surgery did not differ significantly: 0.00 0.03 versus 0.03 0.52 D (p= 0.628), 0.00 0.1 versus 0.19 0.61 D (p= 0.173), 0.04 0.08 versus 0.11 0.42 D (p= 0.269) for groups, respectively. However, there was a pronounced trend to the increase of target refraction data scattering. Conclusion.Glaucoma procedures cause changes of biometrical parameters of the eye, which leads to decrease in accuracy of IOL calculation. Consequently, when choosing intraocular lens, it is recommended to use measurement results obtained after glaucoma surgery. Keywords:intraocular lens; IOL power calculation; glaucoma; sinustrabeculectomy; Ex-PRESS shunt; Ahmed glaucoma valve; biometry; phacoemulsification; axial length; anterior chamber depth; keratometry.