Optos P200TxE - FIGURE 14: Examples of Local Weak Signal Strength; FIGURE 15: Example of Local Weak Signal Near the Fovea; FIGURE 16: Example of Local Weak Signal with Acceptable Global SNR

Chapter 4 - Capture images
l eye movement.
l blinks.
l media opacities.
l dry eye.
l floaters.
l improper alignment of the eye.
If a local weak signal covers essential parts of the image, for example the fovea, the operator should
document the image as non-evaluable. If a local weak signal does not cover essential parts of the image
the operator should document the image as evaluable.
FIGURE 14: Examples of local weak signal strength.
FIGURE 15: Example of local weak signal near the fovea.
FIGURE 16: Example of local weak signal with acceptable global SNR.
Page 48 of 84 Part Number: G110230-003-ENG
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