# How do these things work?

1. I am completely embarrassed, but I have never had to do this as a nurse....!!!!
On an eye exam, first, where do they start? and, on both sides are different sets of numbers, 10/30, 20/50, for example.... which is the one you record?
Second, on a scale, do you slide the metal thing before or after they get on... like say you estimate over 100lbs, do you put the larger one to 100 before they get on, or after?
Third... the height thing on the same scale.... it goes up and down, you record the number at the "gatch", right? I realized today I had recorded some kids at 51cm, the number at the TOP, and realized today that is ALWAYS the number on top, not the persons height. It sunk in when I had all people 51 cm... then a real smaller kiddo at 51, and it hit me.....man was I embarrassed, but I actually never did these things before !!!:roll

Joined: Jan '06; Posts: 1,074; Likes: 458

the person is positioned exactly 20 feet from the chart then uses an opaque card to shield one eye at a time during the test

the person can wear contact lenses or glasses during the test

the person reads through the chart to the smallest line of letters possible
then record the result using the numeric fraction at the end of the last successful line read (indicate whether or not the person missed any letters or if corrective lenses were worn -- for eg. "O.D. 20/30 --1, with glasses"
4. On the scale, to do it "by the book" you should zero the scale and have it at zero when the pt steps on to it. Then move the large weight one notch at a time until it's tipped too far, then move it back one. Then focus on the small weight until it's balanced.

On height, yes, use the number at the gatch. As you found out, the top number never changes.
5. Quote from GingerSue

the person is positioned exactly 20 feet from the chart then uses an opaque card to shield one eye at a time during the test

the person can wear contact lenses or glasses during the test

the person reads through the chart to the smallest line of letters possible
then record the result using the numeric fraction at the end of the last successful line read (indicate whether or not the person missed any letters or if corrective lenses were worn -- for eg. "O.D. 20/30 --1, with glasses"

Maybe I am using a different chart, but on the one I am using , there are *two* sets of numbers, one on the right of the series of letters, and one at the left , both are different, so which one do we record?