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Special features of speckle-modulated laser fields arising at in vitro measurements of different types of human cataractous lenses have been investigated experimentally. Computer analysis of digital images has allowed for estimation of destruction of the spatial coherence of a laser beam scattered by a turbid lens. Applied speckle-technologies have permitted the range of retinal angular resolution to be estimated with the help of laser retinometer at the stage of preoperative cataract diagnosis. An extent of laser retinometry at measuring visual acu9ity in patients with any type of cataract, and an incorrectness of its estimation by means of opto types charts have been set up.
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Garif G. Akchurin, Valery V. Bakutkin, Elena Yu. Radchenko, Valery V. Tuchin, Alexander G. Akchurin, "Speckle technologies and measurement of retinal visual acuity in cataract patients," Proc. SPIE 4156, Clinical Lasers and Diagnostics, (31 January 2001); https://doi.org/10.1117/12.413693