스마트폰 카메라를 이용한 눈꺼풀처짐 환자의 눈꺼풀 깜박임 특성 분석open accessAnalysis of Eyelid Blink Characteristics in Patients with Ptosis Using a Smartphone Camera
- Authors
- Joo, Taesung; Joo, Jin-Ho; Park, In-Ki; Shin, Jae-Ho
- Issue Date
- Jul-2021
- Publisher
- KOREAN OPHTHALMOLOGICAL SOC
- Keywords
- Blink velocity; Eyelid blink; Ptosis; Smartphone
- Citation
- JOURNAL OF THE KOREAN OPHTHALMOLOGICAL SOCIETY, v.62, no.7, pp 873 - 880
- Pages
- 8
- Journal Title
- JOURNAL OF THE KOREAN OPHTHALMOLOGICAL SOCIETY
- Volume
- 62
- Number
- 7
- Start Page
- 873
- End Page
- 880
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/74678
- DOI
- 10.3341/jkos.2021.62.7.873
- ISSN
- 0378-6471
2092-9374
- Abstract
- 목적: 눈꺼풀처짐 환자군과 정상 대조군 사이의 눈꺼풀 깜박임 특성을 스마트폰을 통해 비교하고자 하였다.대상과 방법: 눈꺼풀각막반사간거리가 2.5 mm 이하인 노년 널힘줄눈꺼풀처짐 환자군 20명과 정상 대조군 10명을 대상으로 눈꺼풀처짐 유무로 2개 군으로, 환자군을 70세 기준으로 2개 군으로 나누어 대조군 포함 3개 군으로 나누었다. 스마트폰으로 촬영한 사진과 깜박임 영상을 통해 각 군에서 눈꺼풀틈새, 눈꺼풀올림근 기능, 눈꺼풀각막반사간거리, 눈깜박임 사이 간격, 눈깜박임 시간, 분당 눈깜박임 횟수, 눈깜박임 속도를 비교하였다.결과: 정상 대조군과 비교해 눈꺼풀처짐 환자군에서 눈꺼풀틈새, 눈꺼풀올림근 기능, 눈꺼풀각막반사간거리, 눈깜박임 속도는 작았다. 70세 기준으로 나눈 2개의 환자군과 대조군을 포함한 총 3개 군을 비교했을 때 환자군에서 상기 값들은 나이에 의한 차이는 없었고 대조군에 비해 작았다. 눈꺼풀틈새, 눈꺼풀올림근 기능, 눈꺼풀각막반사간거리가 눈깜박임 속도와 상관관계를 보였으며 눈깜박임 속도의 receiver operating characteristic (ROC) curve에서 area under the receiver operating characteristic (AUROC) cure값이 0.969로 높았고 판별기준점은 32.36 mm/s이었다.결론: 스마트폰을 통해서도 눈꺼풀 깜박임 운동에 대해 분석할 수 있었으며, 노년 널힘줄눈꺼풀처짐 환자군에서 눈꺼풀틈새, 눈꺼풀올림근 기능, 눈꺼풀각막반사간거리, 눈깜박임 속도가 정상 대조군에 비해 작으며 나이의 영향을 받지 않는 점을 확인할 수 있었다. 또한 눈꺼풀처짐 정도와 눈깜박임 속도 사이의 상관관계와 눈깜박임 속도의 ROC curve를 통해 눈깜박임 속도가 눈꺼풀처짐 진단에 가치가 있을 것이라고 본다.
Purpose: To compare eyelid blink characteristics between patients with ptosis and healthy controls using a smartphone camera. Methods: The ptosis group consisted of 20 senile aponeurotic ptosis patients with margin reflex distance(1) <= 2.5 mm and the control group consisted of 10 healthy subjects without ptosis. The ptosis group was further divided into two groups based on an age cutoff of 70 years. Palpebral fissure height, levator function, margin reflex distance(1), inter-blink interval, blink duration, blink rate, and blink velocity were measured and compared between the three groups based on photographs of the eyelids and videos of blinking taken with a smartphone camera. Results: The palpebral fissure height, levator function, margin reflex distance(1), and blink velocity were lower in the ptosis groups than in the control group but these values did not differ between the two ptosis groups. The palpebral fissure height, levator function, and margin reflex distance(1) were correlated with blink velocity. In the receiver operating characteristic (ROC) curve of blink velocity, the area under the receiver operating characteristic (AUROC) curve value was as high as 0.969 and the cut-off value was 32.36 mm/s. Conclusions: It is possible to analyze eyelid blink characteristics using a smartphone camera and the results confirmed that palpebral fissure height, levator function, margin reflex distance(1), and blink velocity were lower in the senile aponeurotic ptosis group than in the healthy control group and were unaffected by age. Additionally, blink velocity is valuable for diagnosis of ptosis due to the correlation between the degree of ptosis, blink velocity, and the ROC curve of blink velocity.
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