Surgery of the vertical tropias: Dissociated vertical deviation and primary overaction of the inferior oblique muscles

Anterior Transposition versus Myectomy of the Inferior Oblique Muscle in the Treatment of Dissociated Vertical Deviation

Anterior transposition of the inferior oblique muscle (ATIO) and myectomy of the inferior oblique muscle (MIO) are surgical methods for treating dissociated vertical deviation (DVD) and are also used in patients with coexisting inferior oblique muscle overaction (IOOA). In order to compare the outcomes of these methods, a study of ATIO and MIO was carried out on patients with DVD of at least 5 ...

Dissociated Vertical Deviation

DOS Times Vol. 12, No. 3 September, 2006 Dissociated Vertical Deviation (DVD) is one of the least understood forms of strabismus. It was first described by Stevens as double vertical strabismus, other common names given to this anomaly are, Alternating hyperphoria (Crone), Anaphoria / anatropia (Stevens), Periodic vertical squint (Anderson), Strabismus sursoadductorius (Cords). The term "Dissoc...

Management of Dissociated Vertical Deviation.

Vertical fusional vergence: the key to dissociated vertical deviation.

OBJECTIVES To test the previous findings of Enright that disparity-induced vertical vergence is mediated primarily by the oblique muscles, and to relate this normal eye movement pattern to the eye movement pattern seen in subjects with dissociated vertical deviation. METHODS Sixteen normal volunteers underwent 55 measurements of the cycloversion associated with prism-induced vertical vergence...

Outcomes of Unilateral Inferior Oblique Myectomy Surgery in Inferior Oblique Overaction Due to Superior Oblique Palsy

OBJECTIVES To present the outcomes of unilateral inferior oblique myectomy performed in patients with inferior oblique overaction due to superior oblique palsy. MATERIALS AND METHODS Twenty-seven eyes of 27 patients that underwent inferior oblique myectomy surgery for superior oblique palsy between 2002 and 2008 were included. Inferior oblique overaction scores (between 0-4) at preoperative, ...