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Home » Your Eye Health » Eye Exams » Common Tests » Autorefractor

Autorefractor

If you’ve discovered you might need vision correction during your eye examination, it’s vital to determine just how “much” your eyes need to be corrected with lenses or contact lenses. This is called measuring your “refraction.

Autorefractors automatically measure this value during an eye examination.

While seated with your chin in a stabilizing chinrest, you’ll be asked to focus on an image or point of light. The autorefractor automatically determines the correction needed to place your “focus point” on top of the retina, the light-sensitive area at the back of the eye responsible for correctly processing images.

The measurement taken by an autorefractor can be translated into a prescription for eyeglasses.

In eye exams for small children, or for people with special needs who may have trouble sitting calmly during an extended exam, or verbally describing their vision problems—autorefractors give highly accurate measurements used to determine vision correction needs, automatically.

How do autorefractors work?

Autorefractors only take a few moments to determine each measurement for each eye. What’s more, autorefractors are quite reliable and are sometimes used in conjunction with a machine called a phoroptor to manually switch lenses in front of your eyes to provide ideal vision correction.

 

Special thanks to the EyeGlass Guide, for informational material that aided in the creation of this website. Visit the EyeGlass Guide today!

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Pursuant to guidance by the Massachusetts state authorities, McAlear Eye Care will be closed beginning Wednesday 3/18/2020 until 4/6/2020. Dr. McAlear will be available by special appointment for any urgent issues by calling and leaving a message on voicemail. Please follow the prompts on the message as directed. We will be open on Thursday 3/19/2020 from 5pm-7pm for glasses and contact pick-ups only. We wish you all health and well-being at an unprecedented time.