TY - JOUR
T1 - Levator Superioris Muscle Function in Involutional Blepharoptosis
AU - Pereira, Luciano S.
AU - Hwang, Thomas N.
AU - Kersten, Robert C.
AU - Ray, Kathryn
AU - McCulley, Timothy J.
PY - 2008/6
Y1 - 2008/6
N2 - Purpose: To assess the role of muscular degeneration, we evaluated the correlation between ptosis severity and levator muscle function. Design: Retrospective cohort study. Methods: The medical records of 136 patients (53 men and 83 women; mean age, 67 years) with acquired blepharoptosis were reviewed for levator function (LF), margin reflex distance (MRD), age, and gender. Multivariate linear regression was performed for statistical analysis. Results: A significant correlation (P < .001) was seen between MRD (mean, 1.0 + 1.0 mm; range, -3.0 to 3.0 mm) and LF (mean, 15.0 + 1.0 mm; range, 11.0 to 20.0 mm). On average, a 0.5-mm reduction in LF was observed for each 1.0-mm decrease in MRD. This was independent to other variables assessed. Conclusions: In patients with involutional blepharoptosis, a directly proportional decrease in levator function and eyelid height was observed. This may implicate an abnormality of the levator muscle itself as a contributing factor in the development of involutional blepharoptosis.
AB - Purpose: To assess the role of muscular degeneration, we evaluated the correlation between ptosis severity and levator muscle function. Design: Retrospective cohort study. Methods: The medical records of 136 patients (53 men and 83 women; mean age, 67 years) with acquired blepharoptosis were reviewed for levator function (LF), margin reflex distance (MRD), age, and gender. Multivariate linear regression was performed for statistical analysis. Results: A significant correlation (P < .001) was seen between MRD (mean, 1.0 + 1.0 mm; range, -3.0 to 3.0 mm) and LF (mean, 15.0 + 1.0 mm; range, 11.0 to 20.0 mm). On average, a 0.5-mm reduction in LF was observed for each 1.0-mm decrease in MRD. This was independent to other variables assessed. Conclusions: In patients with involutional blepharoptosis, a directly proportional decrease in levator function and eyelid height was observed. This may implicate an abnormality of the levator muscle itself as a contributing factor in the development of involutional blepharoptosis.
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U2 - 10.1016/j.ajo.2008.02.002
DO - 10.1016/j.ajo.2008.02.002
M3 - Article
C2 - 18374300
AN - SCOPUS:43949145242
SN - 0002-9394
VL - 145
SP - 1095-1098.e2
JO - American journal of ophthalmology
JF - American journal of ophthalmology
IS - 6
ER -