The formation of posterior continuous capsulorhexis during cataract removal has traditionally been used to prevent visual axis opacification. According to the current literature, closure of the posterior capsulorhexis opening in our patient's case should not have developed in a period of 1year, but it did in only one of the two eyes, despite the presence of equal conditions the same surgeon, the same IOL (sharp-edged hydrophilic acrylic with hydrophobic coating), no concomitant eye diseases and somatic pathology. We conducted a literature search to find the cause of the unilateral development of this complication, as well as the optimal treatment method. The difference between two surgeries was in the diameter of the anterior and posterior capsulorhexis on the right eye they were 0.51.0mm larger than on the left eye, and the left eye has developed opacity, which required surgery. An effective and safe way of treating this problem is the capsulotomy using a 25gauge-vitreotome. The clinical case shows the need for further research on this topic, as formation of posterior continuous capsulorhexis has a risk of intra- and postoperative complications, and more data should be considered to ensure that there is no such recurrence of opacity.

Purpose to study laser irradiation inside the eye. Methods we performed simulation and analysis of the physical effects of YAG laser during laser capsulotomy on the enucleated eyes of mature chinchilla rabbits by pulses fixation with photodetectors and evaluation of them on an oscilloscope. Results our study shows that the effect of the laser pulse on the eye membranes can be measured with a high-speed photodetector, that the results are stable and reproducible, the obtained pulses have the same configuration at all recording points. Conclusion the pulse amplitudes behind the posterior capsule of the lens and at the retina, when the pulse is applied to the posterior capsule, have no statistical difference, this can be explained by diffuse scattering of laser radiation inside the eye by the inner surface of the eye. Using our experimental model, it is possible to calculate the peak of the pulse reaching the retina and use this data in further experiments and clinical practice.