Optical transmission and laser ablation of pathologically changed eye lens capsule

Gamidov, A.A.; Bol'shunov, A V; Yuzhakov, Alexey V.; Shcherbakov, E. M.; Baum, Olga I.; Sobol, Emil N.

doi:10.1070/qe2015v045n02abeh015641

Cited by 3 publications

(1 citation statement)

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“…The most common complication of laser intervention is transient hypertension of the eye associated with the inflammatory process against the release of prostaglandins in the acute period [5]. To date, there are no clear criteria for selecting laser radiation parameters that guarantee the absence of these complications during laser ablation of a clouded lens capsule, even though that attempts are being made to create algorithms that help to reduce the number of complications associated with laser intervention [6,7]. As before, to achieve the result, the tactics of stepwise increase in energy to threshold values that allow for cutting the target tissue are more often used.…”

Section: Introductionmentioning

confidence: 99%

Laser Effect on a Pathologically Altered Capsule of the Lens of the Eye

Baum

Yuzhakov

Gamidov

et al. 2022

Journal of Biomedical Photonics & Engineering

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One of the current areas of application of lasers in ophthalmology is cataract surgery and reducing the number of negative reactions to surgical intervention. In the postoperative period, clouding of the lens capsular bag and the risk of contraction capsular syndrome associated with changes in the biomechanical properties of the lens and capsular bag system are often observed. In the work, the biomechanics of such system were studied. Lenses that were placed in a 10% formalin solution to create cataract-simulating opacity for various amounts of time were studied by optical-coherent tomography, speckleinterferometry method and with fiber-optics setup for scattering dynamics registration. It was shown that speckle interferometry technique is sensitive to structural changes of lenses due to formalin exposure, which makes tissue more elastic and less transparent. OCT shows the same result and is more sensitive to the changes of laser wavelength. In addition, theoretical studies were carried out and have shown that changing laser wavelength can be dangerous for the integrity of the capsule film during medical intervention due to increase of maximum thermal stress.

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Section: Introductionmentioning

confidence: 99%