The Phoropter is a device used by ophthalmologists to measure a patient's eye refraction and determine their prescription. It's also known as a refractor. The examinations are divided into three (3) solutions:
1. Check Eyesight (Refractive Error)

• Check for near-sightedness/long-sightedness.
• Check for astigmatism. and the degree of astigmatism
• Balancing both eyes

2. Check the eye muscles and the coordination of both eyes

• Check for cross-eyedness.

3. Check the focus of the eye lens

• Check the vision most comfortable for the eyes at a distance of 40 cm.

Check the ability to focus the eye lens. Check the ability to relax the focus of the eye lens.