Abstract
Abstract: :
Purpose: How to restrict routine activiites, including brushing teeth and shaving, after retinal detachment surgery is controversial. The purpose of this study is to assess effects on eyes by shaving and brushing teeth and to compare with other routine activities. Methods: Ocular vibration and acceleration of healthy volunteers by elecric and manual shaving and tooth–brushing were measured using electro–oculography (EOG) and accelerometer, respectively. The digital data of the EOG and accelerometry time series were transformed into the Fourier components by the FFT method to obtain power spectrum at the range between 0 and 500 Hz. The control activities were breathing, coughing, speaking, eating soft food and eating hard food. Elecric shaver with frequency of 130 Hz and elecric tooth–brush with rotation of 39 Hz were used. Results: The sum of area of power spectrum of EOG (vertical direction) and accelerometry (x–axis) on 0 to 500 Hz was 10008.4 (µV)2 and 0.007808 (m/s2)2 in elecric shaving, 5898.3(µV)2 and 0.016261 (m/s2)2 in manual shaving, 16144.4 (µV)2 and 0.0087811(m/s2)2 in elecric brushing, and 11112.5 (µV)2 and 2.53932 (m/s2)2 in manual brushing, respectively. Elecric and manual tooth–brushing was greater compared with coughing, eating soft and hard food, whereas elecric and manual shaving was less. Similar findings were found in EOG (horizontal direction) and accelerometry (y and z–axis). Conclusions: Both manual and electic shaving may produce ocular vibration and acceleration, which was equal to or less than other routine activities and may be allowable after surgery. Tooth–brushing may need further investigation.
Keywords: clinical laboratory testing • retinal detachment • trauma