This genuinely blew my mind. I view opticians' appointments the way most people view dentists. I HATE them because of that burny retina test (and the puff of air in the eye) - it sometimes triggers migraines.
I was chatting to my contact lens person today and I told him this, and when he replied 'oh OK I'll turn the brightness right down' I was like EXCUSE ME WHAT.
It's a thing. The second optometrist did it too when I asked her.
GAME CHANGING.