TY - JOUR
T1 - Graded Müllerectomy for correction of graves upper eyelid retraction
T2 - Effect on eyelid movements
AU - Ribeiro, Sara Filipa Teixeira
AU - Garcia, Denny M.
AU - Leal, Vítor
AU - Faria-Correia, Fernando
AU - Rocha-Sousa, Amândio
AU - Falcão-Reis, Fernando
AU - Velasco E Cruz, Antonio Augusto
PY - 2014
Y1 - 2014
N2 - Purpose: To measure the effect of müllerectomy from posterior approach on the amplitudes of spontaneous blinking and downward eyelid saccades.Methods: Spontaneous blinks and downward upper eyelid saccadic movements of 16 patients (23 eyelids) with Graves orbitopathy were measured before and after müllerectomy from posterior approach. A new video system was used to continuously register the blinking activity while subjects viewed a commercial movie for 5 minutes. Downward eyelid saccades (30° of downgaze) were also measured with the video system.Results: Müllerectomy had no effect on the amplitude of the blink. However, as the eyelid margins were significantly lowered by the surgery, the amplitude of the blink movements relative to the pupil center increased substantially. The number of movements occluding the pupil center increased from 0% to 13%. Due to the increased efficiency of blinking, the blink rate decreased. Surgery induced a mean increase of 1.1 mm of downward saccades.Conclusions: The effects of müllerectomy on the blinks are indirect and related to correction of eyelid retraction. The relative amplitude of blink movements increases and blink rate decreases. Müllerectomy does affect the downward eyelid saccades increasing the ability of the upper eyelid to relax on downgaze.
AB - Purpose: To measure the effect of müllerectomy from posterior approach on the amplitudes of spontaneous blinking and downward eyelid saccades.Methods: Spontaneous blinks and downward upper eyelid saccadic movements of 16 patients (23 eyelids) with Graves orbitopathy were measured before and after müllerectomy from posterior approach. A new video system was used to continuously register the blinking activity while subjects viewed a commercial movie for 5 minutes. Downward eyelid saccades (30° of downgaze) were also measured with the video system.Results: Müllerectomy had no effect on the amplitude of the blink. However, as the eyelid margins were significantly lowered by the surgery, the amplitude of the blink movements relative to the pupil center increased substantially. The number of movements occluding the pupil center increased from 0% to 13%. Due to the increased efficiency of blinking, the blink rate decreased. Surgery induced a mean increase of 1.1 mm of downward saccades.Conclusions: The effects of müllerectomy on the blinks are indirect and related to correction of eyelid retraction. The relative amplitude of blink movements increases and blink rate decreases. Müllerectomy does affect the downward eyelid saccades increasing the ability of the upper eyelid to relax on downgaze.
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U2 - 10.1097/IOP.0000000000000116
DO - 10.1097/IOP.0000000000000116
M3 - Article
C2 - 24777264
AN - SCOPUS:84914669608
SN - 0740-9303
VL - 30
SP - 384
EP - 387
JO - Ophthalmic plastic and reconstructive surgery
JF - Ophthalmic plastic and reconstructive surgery
IS - 5
ER -