CharlieHarper
Iron
- Joined
- Aug 27, 2023
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Midface ratio (MFR) might not correctly indicate midface length, if eye spacing ratio (ESR) is different from the ideal.
A high MFR could be due to
1. Normal ESR and short midface
2. Higher ESR and normal midface
or both
Similarly for low MFR.
So while measuring MFR, we should correct for the ESR in order to get a more accurate picture of midface length, using this formula:
Corrected MFR =
Actual MFR x Ideal ESR/Actual ESR
This would be the MFR if eye spacing was corrected.
E.g. someone with 0.5 ESR and 1.05 MSR
You might think they have a short midface
But if we hypothetically brought their eyes closer to make ESR 0.46, corrected MFR becomes 0.966. So they actually have long midface.
A high MFR could be due to
1. Normal ESR and short midface
2. Higher ESR and normal midface
or both
Similarly for low MFR.
So while measuring MFR, we should correct for the ESR in order to get a more accurate picture of midface length, using this formula:
Corrected MFR =
Actual MFR x Ideal ESR/Actual ESR
This would be the MFR if eye spacing was corrected.
E.g. someone with 0.5 ESR and 1.05 MSR
You might think they have a short midface
But if we hypothetically brought their eyes closer to make ESR 0.46, corrected MFR becomes 0.966. So they actually have long midface.