1. Optical Refractors - Phoropters
It can quickly determine a patient's exact refractive errors and assist the optometrist in making a correct diagnosis. ... How much power can a phoropter dial? ... And can the patient have two conditions at the same time? ... Considering astigmatism, the operator corrects the astigmatic refractive error by adding or subtracting cylindrical power which he can read of the phoropter's front side (Cylinder Power Scale). ... It was also a ground-breaking technology for early detection and treatment of retinal diseases that cause vision loss and blindness. ...
- Word Count: 945
- Approx Pages: 4
- Has Bibliography
- Grade Level: High School