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. 2019 Jun 11;13:993–999. doi: 10.2147/OPTH.S213664

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© 2019 Stonecipher et al.

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The MGD subjective grading scale.

Notes: Grade 0 is normal meibum easily expressed. Grade 1 is meibum easily expressed, but with with a more turbid oil. Grade 2 includes the presence of more turbid oil and a more viscous appearance. Grade 3 is the expression of “ropy” meibum. Grade 4 is no expression from the glands despite multiple attempts.

Abbreviation: MGD, meibomian gland disease.