You see and hear with your brain

So it is a good idea to receive treatment for both sides, not just one

The anatomy and physiology of the eye (vision)

I’m guessing that’s what they want us all to do at work.

“Blindness is a Spectrum and not all or nothing”

OS (oculus sinister) == left eye OD (oculus dextrus) == right eye OU (oculus uterque) == both eyes SPH == sphere, the strength of magnification in the lenses CYL == cylinder, cylindrical correction, or the amount of lens power needed to correct an astigmatism AXIS == indicates the angle of astigmatism correction ADD == addition, used for bifocal and multifocal lenses

“Everything You See Is From 15 Seconds in the Past, New Research Claims”

The anatomy and physiology of the ear (hearing)

Tinnitus

hearing comprehension

The vestibular system (balance)