，Can also be connected with the head of ophthalmoscope(optional).
，The 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.
Rechargeable power supply.
Working Distance: 0.67m
Illumination Source: 3.5V/2.8W halogen bulb
Streak Rotation: 360＜
Li+ battery DC:3.7V
YZ24 Streak Retinoscope
Working Distance :1m
Adjustable Range of Streak:0.2mm-0.4mm
IIIumination Source:3V/2.1W,Incandescent Bulb