Eyelid Blink Characteristics in Patients with Ptosis Assessed Using Cellphone Camera before and after Levator Resection
Journal of the Korean Ophthalmological Society
;
: 501-509, 2022.
Article
in Korean
| WPRIM
| ID: wpr-938313
ABSTRACT
Purpose@#To compare the eyelid blink characteristics of patients with ptosis assessed using a cellphone camera before and after levator resection. @*Methods@#In this prospective study, pictures and videos of eyelid blinking were obtained from 40 eyes (20 patients with ptosis) at a margin reflex distance 1 (MRD1) of 3.0 mm or less before and 1 month after levator resection. MRD1, palpebral fissure height (PFH), levator function, inter-blink interval, and blink duration, rate, and velocity were measured. The patients were also divided into those aged < 70 or ≥ 70. @*Results@#MRD1, PFH, and blink velocity increased, and blink duration decreased, after levator resection. In the ptosis group aged less than 70 years, the levator function and blink velocity increased preoperatively, while MRD1, PFH, levator function, and blink velocity increased postoperatively. The blink velocity showed a positive correlation with MRD1 and PFH. @*Conclusions@#Although no significant changes were observed in levator function postoperatively, the blink velocity increased significantly. Blink velocity may be useful for the evaluation of ptosis and as an indirect measure of levator function.
Full text:
Available
Index:
WPRIM (Western Pacific)
Type of study:
Observational study
Language:
Korean
Journal:
Journal of the Korean Ophthalmological Society
Year:
2022
Type:
Article
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