S.V. SHUKHAEV

Saint Petersburg branch of the S. Fyodorov Eye Microsurgery Federal State Institution, 21 Yaroslav Gashek Str., Saint Petersburg, Russian Federation, 192283

Shukhaev S.V. ― ophthalmic surgeon, e-mail: shukhaevsv@gmail.com           

The main ultrasonic and hydrodynamic parameters of the lens aspiration are compared by two different ultrasound tips: a straight flattened needle (according to Kishimoto) and a curved needle of the Kelman type (Mini Tip) with a constant outer and inner diameter. Bimanual torsional phacoemulsification of cataract with femtocompatibility (FemtoFEC) was performed in 35 patients (35 eyes). For the purpose of objective evaluation of postoperative parameters, the «Femto-comparison» technique was used, the essence of which is crushing of the nucleus into two absolutely identical parts by means of a femtolaser. In comparison with the Mini Tip needle, when using the Kishimoto needle, a greater expenditure of ultrasound (US) energy and a longer time of aspiration was detected, however there was a smaller volume of aspirated liquid.

Key words: ultrasound needle, torsion ultrasound, bimanual phacoemulsification of cataract, femtocomparison.

REFERENCES

1. Cionni R.J., Snyder M.E., Osher R.H. Cataract Surgery. Duane’s Clinical Ophthalmology, vol. 6, ch. 6. CD-edition.
2. Tjia K.F. Comparison of 800 µm Nonflared, 800 µm Flared, and 900 µm Tapered Tip for Microcoaxial Torsional Phacoemulsification. Paper 1536947. ASCRS annual meeting 2013, San Francisco.
3. Kishimoto M. New type torsional phaco tip advantages. Video competition. ESCRS 2013. Amsterdam, available at: http://escrs.conference2web.com/prizewinners/vid/14
4. Chylack L.T. Jr., Wolfe J.K., Singer D.M., et al. The Lens Opacities Classification System III. The Longitudinal Study of Cataract Study Group. Arch. Ophthalmol, 1993, Jun, 111 (6), pp. 831-6.
5. Tomilova E., Shukhaev S. A novel method to compare phacoemulsification parameters in vivo: two halves of one nucleus. Graefes Arch. Clin. Exp. Ophthalmol, 2016, Aug, 254 (8), pp. 1579-84.
6. Anisimova S.Yu., Anisimov S.I., Trubilin V.N. Fakoemul’sifikatsiya katarakty s femtolazernym soprovozhdeniem (pervyy otechestvennyy opyt) [Phacoemulsification of cataract with femtolaser accompaniment (the first domestic experience)]. Sovremennye tekhnologii kataraktal’noy i refraktsionnoy khirurgii ― 2012. Sbornik nauchnykh statey pod red. prof. B.E. Malyugina. Moscow, 2012. Pp. 19-22.
7. Boyko E.V., Koskin S.A., Pozharitskiy M.D. Comparative medical and technical characteristics of modern femtosecond laser systems. Vestnik voenno-meditsinskoy akademii, 2010, vol. 2, no. 30, pp. 220-222 (in Russ.).
8. Tognetto D., Cecchini P., Leon P., Di Nicola M., Ravalico G. Stroke dynamics and frequency of 3 phacoemulsification machines. J. Cataract Refract. Surg, 2012, Feb, 38 (2), pp. 333-42.