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. Author manuscript; available in PMC: 2015 Dec 10.
Published in final edited form as: J Neuroophthalmol. 2015 Mar;35(1):16–21. doi: 10.1097/WNO.0000000000000167

Table 3. Factors related to various ocular motor abnormalities in patients with SCA types 1, 2, 3, and 6.

Ocular Motor Symptom/Abnormality Disease Factors Reaching Significance
Diplopia SCA 3 Longer disease duration, higher SARA score, and poorer functional stage
Abnormal pursuit SCA 1 Lower SARA score
SCA 2 Lower SARA score
SCA 3 Higher age and higher age at onset
SCA 6 Shorter disease duration
Hypermetric saccades SCA 1 Higher age and higher age at onset
SCA 2 Lower SARA score and better functional stage
Hypometric saccades SCA 2 Poorer functional stage
Horizontal ophthalmoparesis SCA 3 Higher SARA score
Vertical ophthalmoparesis SCA 1 Higher SARA score and poorer functional stage
SCA 3 Higher repeats, higher SARA score, and poorer functional stage
Slow saccades SCA 1 Higher repeats, disease duration, higher SARA score, and poorer functional stage
SCA 2 Higher SARA score and poorer functional stage
SCA 3 Higher repeats, disease duration, higher SARA score, and poorer functional stage

SARA, Scale for Assessment and Rating of Ataxia; SCA, spinocerebellar ataxia.