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Purpose. The goal is to expand the currently known classifications of the capsular block syndrome (CBS) based on the analysis of publications and own experience, taking into account the data of modern research methods.Material and methods. All cases of the capsular block syndrome described in the available scientific literature were analyzed, as well as observations from our own practice with the use of optical coherence tomography of the IOL-capsular bag complex (Optovue).Results. An extended classification of the CBS is based on the classification according the time of onset (intraoperative, early and late postoperative) proposed by Miyake K. et al. (1998). The enlarged classification reflects the possible causes of intraoperative CBS, a variety of clinical and morphological manifestations of CBS in the postoperative period.Conclusion. The proposed classification integrates our own experience and analysis of clinical cases from the literature and can be used for a uniform description of all detected cases of CBS.

Purpose. To estimate the number and type of complications during the femtosecond laser assisted cataract surgery and to develop methods of decreasing them.Material and methods. The operation was performed in the period from October 2012 to August 2014. The study included 815 patients (1239 eyes). The mean age was 69.1±6.1 years (M±m). The femtosecond laser assisted step was realized using the Victus femtolaser, Valeant Co. (USA). Cataract phacoemulsification was carried out by standard techniques by means of the Stellaris device of Valeant Company,USA.Results. Complications associated with the femtosecond laser cuts: corneal femto cuts depressurization during the transition of the patient from one operating room to another – 0%, during phacoemulsification cataract surgery: detachment of Descemet’s membrane in the paracentesis – 2 (0.2%), in the main section – 9 (0.7%), thermal burns in the main section – 3 (with the nucleus density: grade 4+ cataract) (0.2%). Postoperative hypotension – 3 (0.2%) in the combined intervention with glaucoma surgery. Milling or absence of the anterior chamber of 0%. During the anterior capsulotomy 1133 (91%) a floating track, 101 (8%) clued fragment with a complete capsulotomy, radial gaps of capsulotomy 0%. 3 (0.2%) as a result of lens subluxation starting the technique mastering. There were 5 cases (0.4%) of capsulotomy forming 3 bridges (0.2%). Loss of vacuum occurred in 3 cases. Intraand postoperative IOP elevation was not significant. Capsular blockage – 0%. Posterior capsular tear – 2 (0.2%). Choroidal detachment – 18 (1.5%), iridocyclitis – 19 (1.5%). There was no case of endophthalmitis (0%), hyphema (0%), nuclear or lens fragments dislocation into vitreous cavity (0%). The macular area of the retina showed no significant thickening.Conclusion. 1. It is important to use an NSAID drugs and individual mydriatics groups already one day before the surgery to prevent the narrowing of the pupil in response to the femtosecond laser impact. 2. Exclusion too restless patients with very narrow eyelid margin and deep-set eye. We also recommend to cancel the femtosecond laser step when mydriasis is less than 5mm. 3. Prevention of formation of capsular block syndrome using intra-operative release of gas bubbles before the hydrodissection or its exception.

Capsular block syndrome as a complication after phacoemulsification and posterior chamber intraocular lens (IOL) implantation when the capsular bag is distended by an accumulation of particular substance between the optical surface of the IOL and the posterior capsule has been not widely highlighted in the national scientific literature. The article presents a review of publications of foreign authors describing this phenomenon, its etiology, classification and methods of treatment.

The article describes 5 cases of capsular block syndrome (CBS). This late cataract surgery complication has not been sufficiently covered in Russian scientific literature. Diagnostics were based mainly on slit-lamp biomicroscopy and anterior segment optical coherence tomography. In all cases, examination revealed a retro-optical space filled with content of different transparency and homogeneity (transparent liquid, opaque liquid, regenerative lens material). The condition caused visual acuity to decrease in each case. Patient management included follow-ups (2 cases), yttrium-aluminum-garnet laser (YAG-laser) puncture of posterior lens capsule (1 case) or YAG-laser posterior capsulotomy (2 cases). YAG-laser treatment resulted in visual functions improvement.