Saratov JOURNAL of Medical and Scientific Research

Lens densitometry in ultrasonic cataract phacoemulsification

Year: 2018, volume 14 Issue: №4 Pages: 815-817
Heading: Ophtalmology Article type: Original article
Authors: Aznabaev В.М., Dibaev T.l., Munasypova V/V., Khamidov U.B., Mukhamadeeva O.R.
Organization: Bashkir State Medical University of the Russian Health Care

Purpose: to evaluate the effectiveness of using Pentacam HR sheimpflug camera for objective determination of cataract density. Material and Methods. The subject of the study was the method of determining the density of the lens (densitometry) by the Pentacam HR sheimpflug-camera. The object of the study were patients with age-related cataracts (147 eyes). All patients underwent ultrasound phacoemulsification with implantation of various types of intraocular lenses (IOL). Before treatment, the density of the lens was determined by non-contact method using PNS (Pentacam Nucleus Staging). During the surgery, the density of the lens was determined by the surgeon on a set of factors: the color of the nucleus, the mechanical density, the emulsification easiness. The equivalent ultrasound time and the fact of compliance or discrepancy in the degree of density of the lens with two methods of its determination were recorded for each patient. Results. It was found that the density of the lens recorded by the Pentacam HR is in a direct strong correlation with the equivalent ultrasound time. It was shown that the discrepancy between the PNS method and the contact method performed by the surgeon significantly lengthens the surgery time. Conclusion. The Pentacam HR sheimpflug-camera is an accurate method of determining the density of the cataract before the surgery. The advantage of this method is that it is non-contact, quick and relatively easy-to-perform with the possibility of objective assessment.

1. Aznabaev BM. Ultrasonic cataract surgery — phacoemul-sification. Moscow: 000 "IPK Pareto-Print", 2016; 144 p.
2. Mukhamadeev TR. Medical and technological system of phacoemulsification with modulated ultrasound: PhD diss. Ufa, 2006; 116 p.
3. Buratto L, Werner L, Zanini M, Apple D. Phacoemulsification Principles and Techniques. Second Edition. Milano: Fabiano, 2003
4. Chylack L, Wolfe J, Singer D, et al. The lens opacities classification system III. Arch Ophthalmol 1993; 111; 831-6: pmid:8512486
5. Avetisov SE, Ambardzumyan AR, Avetisov KS. Diagnostic possibility of the ultrasonic microscopy in phacos-urgery. The Russian Annals of Ophthalmology 2013; (5): 32-41
6. Pashtaev NP, Maslova NA, Borodina MV. Experience of using ofthe scanning projection topographer «Pentacam» in the diagnosis of early keratoconus. In: Sovremennye tekh-nologii kataralnoyi rephraczionnoy khirurgii. 2009; p. 320-4
7. AitAkhved X, Maksimov VY, Maksimov MV, et al. The selection of power of LenSX and its optimization during a lens fragmentation by means of the Pentacam. Modern technologies in ophthalmology 2017; (6): 9-11
8. Pichikova ЕА, Egorova EV, Pichikova NA. Optimization of energy impact in cataract surgery with femtolaser support. Practical medicine 2017; (1): 75-9.

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