2 Pcs Dual-use Black Handheld Eye Occluder Plastic Vision Optics Optometry Instrument for Eye Chart Exam (Black)

Perfect

I bought this to periodically check my glasses. If you're looking through this and it appears sharper than what you see with your naked eye or with glasses, it indicates you need lens correction. The magic is all physics, such an awesome tool to determine if you need glasses or an update to your prescription,

Strengthen’s the eye and help with vision

Great for vision exam!

I used one of these at my eye doctor's office and it worked great. So I bought this. Not so good. I just punched a hole in a stiff piece of paper and it worked better than this.

Holes have so many irregularities it’s not like it’s supposed to be. Junk

These will be great for my travel bag. They are a really good quality plastic, not flimsy like some other brands. The material is extremely similar to the ones I receive from our vendor. They are the right size and weight from what I can tell. Additionally the pinholes are a good size for performing visual acuity testing. Overall, if in need of of them, this is a great option.

Great for Eye Exercises if Your Eye or Eyes Have Stigmatism Like i Have.

Exactly what it wanted