Streak retinoscope with ophthalmoscope pole and with two rechargeable well...
He filament can be 360° Rotated and upward and downward moved.
Quickly and precisely measure the astigmatism axis.
The light can be converged, radiated and paralleled.
Continuously adjustable brightness.
Convenient quick recharging.
Anti-recharging and anti-discharging function protects the battery.