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INTERPRETING RESULTS: Normal 0.3 log or less log difference between Right and Left eyes.

An automated program is available to summate the child's test result

Examples:​

Normal. (Two 0.0 log or 0.0 and 0.3 log)

  • 0.3 OD and 0.0 OS (opposite sides)

  • 0.0 OD and 0.3 OS (opposite sides)

  • 0.3 OD and 0.3 OS (opposite sides)

  • 0.0 OD and 0.0 OS

TWO endpoints of 0.3 log unit or greater in the same eye suggests a defect (Always perform two or more tests to verify endpoint)
Defects (greater 0.3 and within 0.3)

  • 0.3 OD and 0.3 OD = Defect OD, repeat to confirm

  • 0.3 OS and 0.3 OS = Defect OS, repeat to confirm

  • 0.9 OS and 1.2 OS = Defect OS, repeat to confirm
     

Error (opposite eyes or 0.6 or greater same eye): Repeat tests.

  • 0.6 OD and 0.9 OS

  • 0.6 OS and 0.0 OS, etc.​

Parity Challenge confirms and amplifies the defect.  Useful in confirming a small defect.  The Parity Challenge endpoints are automatically displayed on the Results page as spectacles with the appropriate right or left lens darker, indicating the side of the parity filter.