VisionMeasuringtheAbilitytoSee视觉测量看的能力

Click to edit Master title style,*,*,*,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Vision:Measuring the Ability to See,Visual Acuity:,This is a measurement of how good your vision is.It is determined using a,Snellen,Eye Chart.If you have 20/20 vision,it means you can see from 20 feet away what the average person sees from 20 feet away.,Vision continued,Astigmatism:,This causes blurry vision due to an improper curve of the lens or the cornea.,Color Blindness:,This usually occurs with the colors red and green.There is a problem with the receptors for the color red,therefore,red causes a stimulation of the green receptors.This makes it confusing for the viewer.,