VISUAL ACUITY Snellen Chart (age 6 years and up)

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					         VISUAL ACUITY                                         VISUAL ACUITY
Snellen Chart (age 6 years and up)                    Snellen Chart (age 6 years and up)
- check with glasses on (except glasses for           - check with glasses on (except glasses for
  reading only)                                         reading only)
- heels on line @ 20'                                 - heels on line @ 20'
- occlude the open left eye first                     - occlude the open left eye first
- must read all letters on lines above red line       - must read all letters on lines above red line
- may miss 2 letters below red line                   - may miss 2 letters below red line
- record last line read correctly                     - record last line read correctly
- Do not isolate letters – show whole line            - Do not isolate letters – show whole line

PASS: 20/30 or better without a 2-line difference     PASS: 20/30 or better without a 2-line difference
RESCREEN: 20/40 or worse or 2-line difference         RESCREEN: 20/40 or worse or 2-line difference
REFER: Same as re-screen. Don’t refer if 2-line       REFER: Same as re-screen. Don’t refer if 2-line
  difference has already been evaluated by an eye       difference has already been evaluated by an eye
  professional                                          professional

PLUS LENS (Optional)                                  PLUS LENS (Optional)
-   +2.25 for 1-3rd grade (ages 6-8 yrs)              -   +2.25 for 1-3rd grade (ages 6-8 yrs)
-   +1.75 for 4th grade (ages 9 yrs and older)        -   +1.75 for 4th grade (ages 9 yrs and older)
-   omit when wearing glasses                         -   omit when wearing glasses
-   occlude the open left eye first                   -   occlude the open left eye first
-   work down the chart - consider bottom line only   -   work down the chart - consider bottom line only


PASS: Cannot read 20/20 with glasses                  PASS: Cannot read 20/20 with glasses
RESCREEN: Reads 20/20 with glasses                    RESCREEN: Reads 20/20 with glasses
REFER: Same as rescreen                               REFER: Same as rescreen




         VISUAL ACUITY                                         VISUAL ACUITY
Snellen Chart (age 6 years and up)                    Snellen Chart (age 6 years and up)
                                                      - check with glasses on (except glasses for
- check with glasses on (except glasses for
                                                        reading only)
  reading only)
                                                      - heels on line @ 20'
- heels on line @ 20'
                                                      - occlude the open left eye first
- occlude the open left eye first
                                                      - must read all letters on lines above red line
- must read all letters on lines above red line
                                                      - may miss 2 letters below red line
- may miss 2 letters below red line
                                                      - record last line read correctly
- record last line read correctly
                                                      - Do not isolate letters – show whole line
- Do not isolate letters – show whole line

                                                      PASS: 20/30 or better without a 2-line difference
PASS: 20/30 or better without a 2-line difference
                                                      RESCREEN: 20/40 or worse or 2-line difference
RESCREEN: 20/40 or worse or 2-line difference
                                                      REFER: Same as re-screen. Don’t refer if 2-line
REFER: Same as re-screen. Don’t refer if 2-line
                                                        difference has already been evaluated by an eye
  difference has already been evaluated by an eye
                                                        professional
  professional

PLUS LENS (Optional)                                  PLUS LENS (Optional)
                                                      -   +2.25 for 1-3rd grade (ages 6-8 yrs)
-   +2.25 for 1-3rd grade (ages 6-8 yrs)
                                                      -   +1.75 for 4th grade (ages 9 yrs and older)
-   +1.75 for 4th grade (ages 9 yrs and older)
                                                      -   omit when wearing glasses
-   omit when wearing glasses
                                                      -   occlude the open left eye first
-   occlude the open left eye first
                                                      -   work down the chart - consider bottom line only
-   work down the chart - consider bottom line only


                                                      PASS: Cannot read 20/20 with glasses
PASS: Cannot read 20/20 with glasses
                                                      RESCREEN: Reads 20/20 with glasses
RESCREEN: Reads 20/20 with glasses
                                                      REFER: Same as rescreen
REFER: Same as rescreen
   SNELLEN CHART                    SNELLEN CHART
      (20 feet)                        (20 feet)

      T E               20/100         T E               20/100

   P T C O               20/60      P T C O               20/60
          green line                       green line

  Z L P E D              20/50     Z L P E D              20/50

E T O D C F              20/40   E T O D C F              20/40
            red line                         red line

D P C Z L F T            20/30   D P C Z L F T            20/30

C F D T E O P L          20/25   C F D T E O P L          20/25

L D C Z O T E P          20/20   L D C Z O T E P          20/20

F P C D T Z L E          20/16   F P C D T Z L E          20/16

To receive credit for a line:    To receive credit for a line:
Read all letters on each line    Read all letters on each line
    above the red line.              above the red line.
May miss 2 letters per line      May miss 2 letters per line
    below the red line.              below the red line.

   SNELLEN CHART                    SNELLEN CHART
      (20 feet)                        (20 feet)

      T E               20/100         T E               20/100

   P T C O               20/60      P T C O               20/60
          green line                       green line

  Z L P E D              20/50     Z L P E D              20/50

E T O D C F              20/40   E T O D C F              20/40
            red line                         red line

D P C Z L F T            20/30   D P C Z L F T            20/30

C F D T E O P L          20/25   C F D T E O P L          20/25

L D C Z O T E P          20/20   L D C Z O T E P          20/20

F P C D T Z L E          20/16   F P C D T Z L E          20/16

To receive credit for a line:    To receive credit for a line:
Read all letters on each line    Read all letters on each line
    above the red line.              above the red line.
May miss 2 letters per line      May miss 2 letters per line
    below the red line.              below the red line.