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Authors
Pang, Yi PhD, OD, FAAO; Frantz, Kelly A. OD, FAAO

Value of the Heidelberg Retinal Tomograph in Optic Nerve Hypoplasia

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Abstract/Introduction

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+1 OS (left eye). Cover test showed constant right esotropia, measuring 10Δ at distance and 16Δ 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 mm2 OD vs. 2.527 mm2 OS.

 

Discussion

The clinical features, management, and associations of ONH are discussed.


Conclusion/Results

Conclusion. 

HRT is a useful tool to assist in diagnosis of ONH by physically measuring the optic nerve.


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