If you’ve been to an eye clinic then this home medical equipment would be familiar. I’ve been squinting a lot lately and leaning forward to see the text in my monitor so I decided to schedule a visit to my eye doctor.
I thought this Grafco Snellen Type Plastic Eye Chart is already passe with the modern equipment doctors use today to diagnose illnesses. I was glad to see the all familiar matte finish eye chart with the green and red bars.
People with 20-20 vision wouldn’t have a problem reading the letters and symbols on the chart which starts really big and gets smaller as you go down the chart to a 20/20 level. If you can read further down this then you have perfect vision.
Eye doctors use this equipment to measure visual acuity from a distance. This is a basis for prescribing lenses for you with the appropriate grade.
However, eye doctors still make use of a more modern equipment to check your eyesight and they do not just rely on this.