Patients sit behind phoropters during eye exams.
These instruments, which look like mechanical masks, check and verify a patient’s optical prescription—but can also be used to measure:
The eye’s natural resting position
- Focal ability
- Eye movements
- Binocular vision
Made up of cylinders, prisms, and lenses, this instrument is most commonly used to measure the eye’s refractive error.
Features:
- Equipped with comprehensive measuring functions, it provides SPH, CYL, AXIS and pupil distance optometry
- Durable and easy to operate
- Easily and intuitively read the sphere focal scale value
- High eco-friendly materials
- Design fitting the face curve and no stimulation
- Easy to take and clean
- Free switch between the cross-cylindrical lens and the rotary prism
- When the rotating risk is turning by the sphere, it can make sphere power adjust 3.00D for big scope.
- It is designed expediently and smartly for a particular cross cylinder. Supporting supplementary lens could increase scope of measurement.