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1. Squint to see through a small hole poked with your finger. It works similarly to a hole blocker, blocking light from passing through the outside of the eye lens
2. Tilt the handle at an angle to move the hole away from the line of sight, correcting the refractive error through the lens. This can be used to distinguish visual defects caused by refractive error from those caused by other problems
Isa
2025-08-11 18:34:19
Bought this for mom. She likes them.
Martin
2025-07-05 16:13:04
Great tool for ophthalmology, optometry office.
Seasoned
2025-05-31 10:19:01
School nurses can use these & make eye exams more accurate & easier on the child.
Kayton LaGaye Coffee
2025-05-02 14:41:22
This is PERFECT for using a pinhole as an optometrist. Patients are often confused by other pinhole methods & this one is very easy to understand.
Sixto R. Aymerich
2025-04-02 17:45:38
Precio y durabilidad
RayGUN
2025-03-03 17:30:58
One I used in the doctors office had different size holes some smaller that this one.
NYCDocMom
2025-02-18 14:34:00
I bought these pinhole glasses because we needed a few extra around the office.I tried it on several patients this week, the holes are too big to get an accurate pinhole measurement for an eye exam.Credentials: Eye doctor
Ramon
2025-02-03 09:55:08
El producto tiene una buena calidad de material. Buena funcionalidad.
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