Comparison of anterior segment measurements by Sirius Schiempflug Topographer and Tomey Optical Biometer

Dr Komal Parikh; Dr Deepa Sonawane; Ms. Kanchan R. Vishwakarma; Dr Sushmita Gaurav Shah

Volume : VII, Issue : XII, December - 2018

Comparison of anterior segment measurements by Sirius Schiempflug Topographer and Tomey Optical Biometer

Dr Komal Parikh, Dr Deepa Sonawane, Ms. Kanchan R. Vishwakarma, Dr Sushmita Gaurav Shah

Abstract :

The aim of this study was to Compare the anterior segment measurements by Sirius Schiempflug Topographer and Tomey Optical Biometer as precision in ocular biometric measurements have become the need of day.

METHODOLOGY

This Prospective study was conducted in ophthalmology department in eye Hospital. Hundred eyes of 50 patients (25 men and 25 women) with a mean age of 58.06 � 14.55 years (range, 25 to 76 years) were included in this study. One eye of each subject was randomly chosen (fair coin toss) and measured sequentially, first with the Sirius Schiempflug Topographer and then with OA-2000 Tomey Optical Biometer,along with other complete ophthalmology examination.

RESULTS

In the current study, K1, Axis 1 and Axis 2 showed no statistical significant difference between the measurements of both the instruments. The K2 value obtained by the Tomey device was slightly higher than that produced by the Sirius, but the difference in averages was too small to be clinically relevant. The corneal power measurements (K1, Axis1, K2 and Axis 2) obtained by the Sirius and Tomey optical biometer showed a positive correlation In the present study mean ACD of Sirius and Optical Biometer was 2.88�0.44 (mm) and 3.30�0.37(mm), respectively. both the instruments gave a positive correlation. Parameters, such as K2, ACD, CCT, Pupil size and WTW showed statistically significant differences that may not be clinically significant.

CONCLUSION

Regarding the correlation between devices, all parameters were within acceptable limits and showed excellent correlation, indicating that the devices could be used interchangeably for the parameters assessed