Assertion: strabismus | /r/HasProperty | heufelder
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Source sentences:
text: The patient may develop a squint ( strabismus ), usually a downwardly deviated eye (hypotropia) or a medially deviated eye (esotropia) (Heufelder & Joba 2000, Boulos & Hardy 2004, Meyer 2006, Schotthoefer & Wallace 2007).