Manifest Refraction and Binocular Balance Protocol

This video show the manifest refraction and binocular balance protocol being performed. The protocol is designed to push maximum plus and maximum cylinder for use in refractive surgery.

[Patrick-dhmv]

This is great unintentional ASMR. I’m surprised nobody else has seemingly picked up on this.

[guykezirian]

This video clearly demonstrates how to properly perform a binocular balance test (BBT). The BBT has been shown to be the most accurate and reproducible method for measuring the manifest refraction. In practice, the BBT component takes less that 60 seconds once the basic manifest is complete, and those 60 seconds can save many hours and weeks of frustrations with incorrect spectacles or even worse, a refractive miss after refractive surgery (e.g., LASIK, SMILE). Thanks to London Vision Clinic, one of the most trusted clinics in ophthalmology, for sharing this valuable teaching resource!

[otiebrown]

This could take over an hour. It is very easy to make a mistake.
I do not trust this.
I check my refraction at home, more accurately, with my own Trial Lens Set.