Features:

• 1. Optotypes charts: Tumbling E, Landolt C, Alphabet, Numbers, Children
• 2. Special functional charts: Ishihara, ETDRS, Cross cylinder, Astigmatic fan dial, Fixation spot, Cross grid, Contrast test, Horizontal coincidences, Vertical coincidences, Red & green balance, R&G mask, Black/White background etc.
• 3. The random presentation of optotypes could abolish memorization problems
• 4. The brightness of background and charts could be adjusted.
• 5. The contrast of the optotypes is adjustable.
• 6. Red/Green mask color could be adjusted to match various types of red and green glasses.
• 7. ETDRS includes an indicator stick function(optional).
• 8. The software could be upgraded by USB
• 9. Remote control APP is available on Android phone.
  • Specifications:

• Monitor:	21.5-inch Matte IPS display
  	Resolution: 1920*1080
  Working Distance:	2m-6.5m (If use the mirror function, 1m   distance could be achieve)
  Visual Unit:	Decimal: 0.04 to 2.0
  	Snellen(ft): 20/500 to 20/10 (20/XX)
  	Snellen(m): 6/150 to 6/3 (6/XX)
  	Snellen(m): 5/130 to 5/2.5 (5/XX)
  	5-Grade: 3.6 to 5.3
  	LogMAR: 1.4 to -0.3
  Charts Shifting Speed:	0.1 second
  Power Supply:	AC100V-240V, 50/60HZ
  	Input: 60VA
  Remote Controller:	IR remote controller
  	Bluetooth (APP, only available on Android   phone)
  Weight:	2.75KG (N.W.)
  Dimension:	508(W)x43(D)x305(H)mm
  Power:	60VA
  Standard Accessories:	Remote Controller, Wall Bracket, Power Cable   with AC-DC Adapter, Desk Support