V. Molebny, I. Pallikaris, S. Panapogoulou, I. Chyzh, V. Sokurenko. Eye refraction distribution: studies with Tracey-1 // Physiological Optics. Topical Meetings Digest Series. – 1999. – Vol. 23. – P. 51-52.

Principles of measurement of eye refraction distribution with new spatially resolved refractometer Tracey-1. developed in Ukraine, and the results of preliminary experimental studies at VEIC, Greece, are reported. 20 pseudophakic eyes were subjected to 30 consecutive measurements each, in order to test the reproducibility. Measurements were provided in three zones: 0-3 mm, 3-5(6) mm and 0-5(6) mm. For each zone, parameters of astigmatism were calculated and accuracy of measurements was evaluated. Standard statistical procedures show-that 95% of all measured values are within ± 0.20 diopter of declination from the mean value.