I.V. KUZNETSOV¹, N.V. PASIKOVA¹, V.I. KUZNETSOVA²

¹Orenburg branch of S. Fyodorov Eye Microsurgery Federal State Institution, 17 Salmyshskaya Str., Orenburg, Russian Federation, 460047

²Orenburg State Medical University, 6 Sovetskaya Str., Orenburg, Russian Federation, 460000

  Kuznetsov I.V. ― ophthalmologist, e-mail: shtirlic-ku@mail.ru

Pasikova N.V. ― ophthalmologist, e-mail: natiracool@mail.ru

Kuznetsova V.I. ― 6^th year student, e-mail: viktoshka-08@mail.ru

 Objective ― to compare the features of keratometric system Verion, autorefractometer «Tomey 5000», optical biometer «IOL-Master» with keratometry function, keratotopograph «Tomey TMS-4» for the estimation of focusing power of the cornea when calculating intraocular lens for eyes after keratotomy.

Material and methods. 21 patients (42 eyes) after radial keratotomy underwent keratometry; keratometric indices were compared taking into consideration 2 main meridians.

Results. The maximum keratometry values were obtained using «Tomey 5000», the minimal ones ― using «Tomey TMS-4». «IOL-Master» and «Verion» showed intermediate results with a slight excess when using «IOL-Master». The obtained differences are statistically significant: p<0.05. Conclusion. Calculation of the optical power of the IOL in the eyes after radial keratotomy is effectually performed according to the formula of the 4^th generation Holladay II «Verion» system using the keratometric parameters of the keratotopograph «Tomey TMS-4».

Key words: radial keratotomy, keratometry, intraocular lens.

(For citation: Kuznetsov I.V., Pasikova N.V., Kuznetsova V.I. Features of «Verion» keratometric system in comparison with traditional keratometers in patients after radial keratotomy. Practical Medicine. 2018)

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