Biomechanical properties of the anterior lens capsule after manual and femtolaser capsulotomy

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K.S. Avetisov

FGBU "NII glaznykh bolezneĭ" RAMN

N.A. Bakhchieva

Research Institute of Eye Diseases, 11 A, B, Rossolimo St., Moscow, Russia, 119021

S.É. Avetisov

FGBU "Nauchno-issledovatel'skiĭ institut glaznykh bolezneĭ" RAMN, Moskva

I.A. Novikov

Institute of Cardiology named after A.L. Myasnikov of National Medical Research Center for Cardiology, Moscow, Russia

N.V. Belikov

Bauman Moscow State Technical University, 5/12-aya Baumanskaya, Moscow, Russia, 105005

I.V. Khaidukova

State educational institution of higher professional education «South Ural State Medical University», Russian Ministry of Health, Chelyabinsk, Russian Federation

Biomechanical properties of the anterior lens capsule after manual and femtolaser capsulotomy

Authors:

K.S. Avetisov, N.A. Bakhchieva, S.É. Avetisov, I.A. Novikov, N.V. Belikov, I.V. Khaidukova

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Journal: Russian Annals of Ophthalmology. 2019;135(1): 4‑11

DOI: 10.17116/oftalma20191350114

Views: 1089

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To cite this article:

Avetisov KS, Bakhchieva NA, Avetisov SÉ, Novikov IA, Belikov NV, Khaidukova IV. Biomechanical properties of the anterior lens capsule after manual and femtolaser capsulotomy. Russian Annals of Ophthalmology. 2019;135(1):4‑11. (In Russ., In Engl.)
https://doi.org/10.17116/oftalma20191350114

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Purpose — to comparatively evaluate the mechanical stability of the edge of central fragment of anterior lens capsule after manual and femtolaser capsulotomy. Material and methods. The mechanical tests were performed on the central fragments of the anterior lens capsules obtained intraoperatively after manual and femtolaser capsulotomy (15 and 13 samples, respectively). The conditions of the developed method of mechanical testing are as close to in vivo as possible. The method allows evaluation of the mechanical response mainly from the edge of the sample, reception of the averaged response from the four edges of the capsule, and almost eliminates the effect of additional edge notches in samples obtained by manual capsulotomy. Results. After manual capsulotomy, the maximum force and elongation of the anterior capsule sample at maximum tensile strength were significantly higher than similar characteristics of the samples after femtolaser capsulotomy. Conclusion. The obtained results correspond with the morphological studies of capsule edge structure after manual and femtolaser capsulotomy. The edge of the anterior capsule after femtolaser capsulotomy has form, in rough approximation, close to one of a postage stamp perforation, which is the consequence of micro-irregularities (microfractures) in the areas irradiated by pulsed laser, and wider area of deepithelization compared to the manual technique.

Keywords:

lens capsule

anterior capsulotomy

biomechanics of anterior lens capsule

femtosecond laser radiation

Authors:

K.S. Avetisov

FGBU "NII glaznykh bolezneĭ" RAMN

N.A. Bakhchieva

Research Institute of Eye Diseases, 11 A, B, Rossolimo St., Moscow, Russia, 119021

S.É. Avetisov

FGBU "Nauchno-issledovatel'skiĭ institut glaznykh bolezneĭ" RAMN, Moskva

I.A. Novikov

Institute of Cardiology named after A.L. Myasnikov of National Medical Research Center for Cardiology, Moscow, Russia

N.V. Belikov

Bauman Moscow State Technical University, 5/12-aya Baumanskaya, Moscow, Russia, 105005

I.V. Khaidukova

State educational institution of higher professional education «South Ural State Medical University», Russian Ministry of Health, Chelyabinsk, Russian Federation

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