Optometry Research Today is a free monthly online journal that collates and summarizes the latest research about Optometry, including details on myopia, optometric practice, therapy.

Value of the Heidelberg Retinal Tomograph in optic nerve hypoplasia.

Pang Y, Frantz KA

Illinois College of Optometry, Chicago, IL 60616, USA. ypang@ico.edu <ypang@ico.edu>

PURPOSE: A case of optic nerve hypoplasia (ONH) is reported to demonstrate the value of the Heidelberg Retinal Tomograph II (HRT) in assisting with the diagnosis. CASE REPORT: An 8-year-old black male was referred to our clinic for evaluation of right esotropia and presumed amblyopia. Best-corrected visual acuities were 20/60 OD (right eye) and 20/25 OS (left eye). Cover test showed constant right esotropia, measuring 10 at distance and 16 at near. A smaller optic nerve head was detected OD with absence of the double ring sign. The findings of HRT were consistent with a diagnosis of unilateral ONH, with a disc area of 1.545 mm OD vs. 2.527 mm OS. DISCUSSION: The clinical features, management, and associations of ONH are discussed. CONCLUSION: HRT is a useful tool to assist in diagnosis of ONH by physically measuring the optic nerve.

Published 2 July 2008 in Optom Vis Sci, 85(7): 508-11.
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