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How do I recognize “appropriate” or “inappropriate” reflections (risk of erroneous measurements)?

April 26, 2017appropriate erroneous inappropriate measurements recognize Reflections risk

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How do I recognize “appropriate” or “inappropriate” reflections (risk of erroneous measurements)?

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If you can see six peripheral circular light dots on the screen, everything is OK. If one of the dots is irregularly shaped, this might be caused, for instance, by a local corneal scar. If several dots are deformed, this might be due to a poor tear film. In this case, tell the patient to briefly close and open her or his eyes again. If the top dot is missing, you should consider an obstructing eyelid or eyelashes.