http://doi.org/10.31288/oftalmolzh20105411

COMPARATIVE EVALUATION OF DIFFERENT METHODS OF THE CORNEAL CENTRAL THICKNESS MEASUREMENT

S. A. Rykov, Yu. N. Kondratenko, A. N. Novitsky, A. R. Kisil

Kiev, Ukraine

Measurement of the central corneal thickness is the essential component of the patient's examination in refractive surgery, surgery of cataract and glaucoma as well as making an adequate diagnosis and monitoring of glaucoma profile patients and patients with keratoconuses and keratectasies. The main problem of the existing measurement methods of the central corneal thickness is to determine the level of their reproduction and comparison of the data obtained. The paper presented the study of measurement reproduction and comparison of the pachymetry data of the most widely used instruments for CCT measuring (ultrasound pachymetry — based on ORA device, noncon¬tact keratotopography based on Orbscan II and noncontact endotelioscopy based on Topcon SP 3000).The above mentioned parameters are presented in total and at all measured ranges of the central corneal thickness at 20 um intervals. The study showed the greatest measurement reproduction in the contact ultrasound pachymetry. There was revealed the impossibility of direct interdevice comparison of the results of CCT measurements, therefore correction interdevice coefficients were proposed.

 

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