What is the normal Hertel Exophthalmometry range for African American adults?

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Study for the NBEO Ocular Disease Part 1 Test. Use flashcards and multiple choice questions, each with hints and explanations, to prepare for your exam! Get ready for your success!

Multiple Choice

What is the normal Hertel Exophthalmometry range for African American adults?

Explanation:
Normal Hertel exophthalmometer values vary with population because orbital anatomy and tissue thickness differ. For African American adults, a typical normal range is about 12 to 24 millimeters. This higher upper limit reflects the greater baseline protrusion found in some individuals of this group, so measurements up to roughly 24 mm can still be considered within normal limits. Values beyond that threshold may indicate exophthalmos or orbital disease and warrant further evaluation. When performing the exam, compare both eyes and consider a side-to-side difference of more than about 2 mm as potentially clinically significant.

Normal Hertel exophthalmometer values vary with population because orbital anatomy and tissue thickness differ. For African American adults, a typical normal range is about 12 to 24 millimeters. This higher upper limit reflects the greater baseline protrusion found in some individuals of this group, so measurements up to roughly 24 mm can still be considered within normal limits. Values beyond that threshold may indicate exophthalmos or orbital disease and warrant further evaluation. When performing the exam, compare both eyes and consider a side-to-side difference of more than about 2 mm as potentially clinically significant.

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