The ARK-4000 provides measurement of sphere power, cylinder power, axis, pupil distance, and corneal curvature. It offers dependable data for eyeglass fitting and clinical evaluation. With Hartmann Imaging Processing technology, the device uses an 850 nm infrared lenslet array to capture fundus reflections and calculate refractive parameters, ensuring stable and accurate results for optical shops, clinics, and hospitals.
By pressing the Up & Don buttons,the users can set and adjust the height of the patient's chin freely and quicky.
![]()
High brightness and contrast 8” wide color TFT LCD screen, smooth touch mode, different angle can be adjusted.
![]()

Processing time
According your order list. we will supply delivery time .
Commonly is 5-7 work days after we confirm payment
Shipping time
By Express : 3-7 days . Door to door service
By Air : 3-7 days . (the goods arrival at your local air ports
By sea : 30-40 days (the goods arrival at your local sea ports )
PS : by air or by sea, if you need door to door service, please tell us . we will help you checking the extra door to door cost.
How many months warranty do you provide ?
one year
What should I do if the machine have question ?
For ensuring all the items are in good quality, we will test all products before the packages were sent out. Once the machine have some question, please don't worry. kindly send us some images of the situation , Video and machine series, and explain the question in where . we will supply solution to you deal soon.
What should I do if the spare parts is broken in Warranty ?
If in Warranty, some spare parts broken in the Use. kindly supply picture or video , and machine series number .
We will send the spare parts by express to you soon.. and we bear express cost .
Please enter your target price
Please provide a quantity
United States
Please provide your name
Please enter your email adress
Enter a valid email address
Please enter the phone number
Please enter the inquiry information
Rightway Brand Retinoscopy Simulation
china ophthalmic high quality ARK-800 auto refractometer
Auto Refractometer/Keratometer
ARK-1800 Auto Focus Refractometer
ARK-1500 Optometry Auto Ref Keratometer
Eye Ophthalmology Auto Refractometer Optical Instrument
ARK-100 New Fully Automatic Auto Refractometer with Kerato measurement
FA-6000A New Automatic Computerized Refractor Ophthalmic Refractor
RK-800 Auto Refractometer with keratometer Cut Printer Refractor Fast Delivery
Auto refractometer RK-800 keratometer autorefractometer with high quality and comparabilty price
Newest optical system automatic digital refractometer / autorefractor keratometer price
ARK-8000 New Automatic Computerized Refractor Ophthalmic Refractor
High Quality Ophthalmology Equipment Auto ref-keratometer for Hospital and Optical Store
RMK-700 Auto Refractometer with Keratometer Optical Instrument for Optical Stores
Ophthalmic Professional Portable Full Automatic Refractor Best Auto Refractometer Keratometer
LINK-PP LPJ1075-1BHNL 100% Cross RTA-110AHQ1A UDE
United States
Carrier
CostDelivery TimeTracking
ARK-4000 Auto Ref Keratometer
