Welch Allyn SureSight Autorefractor - User Manual - Manual (Page 23)

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Results
Reliability Number indicates the number of good readings obtained and their
consistency, based on a 1 to 9 scale. The higher the number, the better.
• >6 is typically acceptable ✰
• 5 is marginal / repeat the test if possible
• <4 is poor / repetition of the test is necessary
✰
If the patient did not appear to fixate on the unit during data acquisition, repeat
the test, even if reliability numbers are >6.
• S is the sphere in diopters.
• C is the cylinder power in diopters.
A +9.99 or -9.99 indicates a reading outside the unit’s measurement range.
• The SW X.XXe after the date on the printout is the software revision level in
the SureSight unit.
Sphere
Cylinder
Reliablity
Number
Axis
Child/Adult
Mode