title: High myopia causing bilateral abduction deficiency.
abstract: We present two cases of degenerative myopia with abduction deficiency. Three mechanisms can explain the defect in the abduction: (a) the size of the long globe filling the space of the orbits, (b) the tightness of the medial recti due to long axis of the globe, and (c) longstanding esotropia becoming decompensated later in life. We believe that high myopia is not a well-known cause of abduction deficiency, and it should be considered in the differential diagnosis.
authors.affiliation: Neuro-Ophthalmology Unit, Hacettepe University, Ankara, Turkey.
authors.forename: P
authors.initials: P
authors.lastname: Aydin
authors.forename: T
authors.initials: T
authors.lastname: Kansu
authors.forename: A S
authors.initials: AS
authors.lastname: Sanac
mesh_terms: D000328:Adult; D005133:Eye Movements; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000150:complications* / Q000000981:diagnostic imaging; D015835:Ocular Motility Disorders / Q000000981:diagnostic imaging / Q000209:etiology*; D009801:Oculomotor Muscles / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed; D014792:Visual Acuity