1.A Comparison between Keratograph 5M® and IDRA® in Dry Eye Patients
Seo Woo PARK ; Ha-Rim SO ; Ji Won BAEK ; Ho Sik HWANG ; Kyung-Sun NA ; Ho RA ; Nam Yeo KANG ; Hyun Seung KIM ; Eun Chul KIM
Journal of the Korean Ophthalmological Society 2025;66(4):175-180
Purpose:
To evaluate the compatibility and usability of test results obtained from the IDRA and Keratograph 5M in clinical settings by comparing their performance in patients with dry eye disease.
Methods:
From December 27 to 30, 2022, a study was conducted on 30 patients diagnosed with dry eye utilizing both the Keratograph 5M and IDRA devices. The parameters compared and analyzed included lipid layer thickness, tear meniscus height, tear film break-up time, and meibography. A paired t-test was used for statistical comparison. The lipid layer thickness in the Keratograph 5M was graded on a scale from 0 to 4 based on thickness.
Results:
No significant differences were found between the two devices in tear film break-up time, tear meniscus height, and meibography (p = 0.148, 0.072, 0.124, respectively). However, the tear lipid layer thickness measured by IDRA showed a proportional relationship with the grade assigned by the Keratograph 5M (Kendall R = 0.217, p = 0.037; Spearman R = 0.260, p = 0.045).
Conclusions
The IDRA device offers the advantage of performing multiple dry eye tests; simultaneously, thereby saving time compared to the Keratograph 5M. Both devices can be used compatibly with IDRA particularly advantageous for providing a numerical value for tear lipid layer thickness which enhances the convenience of dry eye diagnosis and treatment.
2.A Comparison between Keratograph 5M® and IDRA® in Dry Eye Patients
Seo Woo PARK ; Ha-Rim SO ; Ji Won BAEK ; Ho Sik HWANG ; Kyung-Sun NA ; Ho RA ; Nam Yeo KANG ; Hyun Seung KIM ; Eun Chul KIM
Journal of the Korean Ophthalmological Society 2025;66(4):175-180
Purpose:
To evaluate the compatibility and usability of test results obtained from the IDRA and Keratograph 5M in clinical settings by comparing their performance in patients with dry eye disease.
Methods:
From December 27 to 30, 2022, a study was conducted on 30 patients diagnosed with dry eye utilizing both the Keratograph 5M and IDRA devices. The parameters compared and analyzed included lipid layer thickness, tear meniscus height, tear film break-up time, and meibography. A paired t-test was used for statistical comparison. The lipid layer thickness in the Keratograph 5M was graded on a scale from 0 to 4 based on thickness.
Results:
No significant differences were found between the two devices in tear film break-up time, tear meniscus height, and meibography (p = 0.148, 0.072, 0.124, respectively). However, the tear lipid layer thickness measured by IDRA showed a proportional relationship with the grade assigned by the Keratograph 5M (Kendall R = 0.217, p = 0.037; Spearman R = 0.260, p = 0.045).
Conclusions
The IDRA device offers the advantage of performing multiple dry eye tests; simultaneously, thereby saving time compared to the Keratograph 5M. Both devices can be used compatibly with IDRA particularly advantageous for providing a numerical value for tear lipid layer thickness which enhances the convenience of dry eye diagnosis and treatment.
3.A Comparison between Keratograph 5M® and IDRA® in Dry Eye Patients
Seo Woo PARK ; Ha-Rim SO ; Ji Won BAEK ; Ho Sik HWANG ; Kyung-Sun NA ; Ho RA ; Nam Yeo KANG ; Hyun Seung KIM ; Eun Chul KIM
Journal of the Korean Ophthalmological Society 2025;66(4):175-180
Purpose:
To evaluate the compatibility and usability of test results obtained from the IDRA and Keratograph 5M in clinical settings by comparing their performance in patients with dry eye disease.
Methods:
From December 27 to 30, 2022, a study was conducted on 30 patients diagnosed with dry eye utilizing both the Keratograph 5M and IDRA devices. The parameters compared and analyzed included lipid layer thickness, tear meniscus height, tear film break-up time, and meibography. A paired t-test was used for statistical comparison. The lipid layer thickness in the Keratograph 5M was graded on a scale from 0 to 4 based on thickness.
Results:
No significant differences were found between the two devices in tear film break-up time, tear meniscus height, and meibography (p = 0.148, 0.072, 0.124, respectively). However, the tear lipid layer thickness measured by IDRA showed a proportional relationship with the grade assigned by the Keratograph 5M (Kendall R = 0.217, p = 0.037; Spearman R = 0.260, p = 0.045).
Conclusions
The IDRA device offers the advantage of performing multiple dry eye tests; simultaneously, thereby saving time compared to the Keratograph 5M. Both devices can be used compatibly with IDRA particularly advantageous for providing a numerical value for tear lipid layer thickness which enhances the convenience of dry eye diagnosis and treatment.
4.The Correlation between MMP-9 Point-of-Care Assay and Clinical Symptoms and Signs of Dry Eye Disease
Su yeon HAN ; Ha rim SO ; Seung hoon LEE ; Ji won BAEK ; Ho RA ; Nam yeo KANG ; Eun chul KIM
Annals of Optometry and Contact Lens 2024;23(2):58-63
Purpose:
To evaluate the correlation between matrix metalloproteinase-9 (MMP-9) point-of-assay and clinical symptoms and signs of dry eye disease.
Methods:
We performed a retrospective study for patients diagnosed with dry eye. MMP-9 (InflammaDry) was performed on 235 patients. Patients were assessed using Schirmer test, corneal staining score, tear film breakup time (TBUT) and the Ocular Surface Disease Index (OSDI).
Results:
The score of Schirmer test was lower significantly in MMP-9 positive group than in MMP-9 negative group (for each 4.21 ± 5.80 mm, 5.96 ± 8.14 mm; p = 0.035). TBUT was shorter significantly in MMP-9 positive group than in MMP-9 negative group (for each 5.46 ± 4.06 s, 8.27 ± 4.75 s; p = 0.0008). The ratio of positive corneal stain (for each 83%, 31%) and OSDI even or greater than 13 (for each 80%, 75%) was significantly higher in MMP-9 positive group than in MMP-9 negative group (p = 0.00001, p = 0.0044). The value of MMP-9 point-of-care assay showed showed the negative correlation with Schirmer test (Rs = 0.383, p < 0.001), and TBUT (Rs = 0.310, p < 0.05), and showed the positive correlation with corneal staining score (Rs = 0.527, p < 0.001), OSDI (Rs = 0.510, p < 0.001).
Conclusions
MMP-9 point-of-assay accords with clinical symptoms and signs of Dry eye disease, and may be helpful in diagnosing Dry eye disease.
5.Awareness of using chatbots and factors influencing usage intention among nursing students in South Korea: a descriptive study
So Ra KANG ; Shin-Jeong KIM ; Kyung-Ah KANG
Child Health Nursing Research 2023;29(4):290-299
Purpose:
Artificial intelligence (AI) has had a profound impact on humanity; in particular, chatbots have been designed for interactivity and applied to many aspects of daily life. Chatbots are also regarded as an innovative modality in nursing education. This study aimed to identify nursing students' awareness of using chatbots and factors influencing their usage intention.
Methods:
This study, which employed a descriptive design using a self-reported questionnaire, was conducted at three university nursing schools located in Seoul, South Korea. The participants were 289 junior and senior nursing students. Data were collected using self-reported questionnaires, both online via a Naver Form and offline.
Results:
The total mean score of awareness of using chatbots was 3.49±0.61 points out of 5. The mean scores of the four dimensions of awareness of using chatbots were 3.37±0.60 for perceived value, 3.66±0.73 for perceived usefulness, 3.83±0.73 for perceived ease of use, and 3.36±0.87 for intention to use. Significant differences were observed in awareness of using chatbots according to satisfaction with nursing (p<.001), effectiveness of using various methods for nursing education (p<.001), and interest in chatbots (p<.001). The correlations among the four dimensions ranged from .52 to .80. In a hierarchical regression analysis, perceived value (β=.45) accounted for 60.2% of variance in intention to use.
Conclusion
The results suggest that chatbots have the potential to be used in nursing education. Further research is needed to clarify the effectiveness of using chatbots in nursing education.
7.Circulating Tumor Cell Number Is Associated with Primary Tumor Volume in Patients with Lung Adenocarcinoma
Byung Ju KANG ; Seung Won RA ; Kyusang LEE ; Soyeoun LIM ; So Hee SON ; Jong Joon AHN ; Byung Chul KIM
Tuberculosis and Respiratory Diseases 2020;83(1):61-70
BACKGROUND:
Circulating tumor cells (CTCs) are frequently detected in patients with advanced-stage malignant tumors and could act as a predictor of poor prognosis. However, there is a paucity of data on the relationship between CTC number and primary tumor volume in patients with lung cancer. Therefore, our study aimed to evaluate the relationship between CTC number and primary tumor volume in patients with lung adenocarcinoma.
METHODS:
We collected blood samples from 21 patients with treatment-naive lung adenocarcinoma and 73 healthy individuals. To count CTCs, we used a CTC enrichment method based on fluid-assisted separation technology. We compared CTC numbers between lung adenocarcinoma patients and healthy individuals using propensity score matching, and performed linear regression analysis to analyze the relationship between CTC number and primary tumor volume in lung adenocarcinoma patients.
RESULTS:
CTC positivity was significantly more common in lung adenocarcinoma patients than in healthy individuals (p<0.001). The median primary tumor volume in CTC-negative and CTC-positive patients was 10.0 cm³ and 64.8 cm³, respectively. Multiple linear regression analysis showed that the number of CTCs correlated with primary tumor volume in lung adenocarcinoma patients (β=0.903, p=0.002). Further subgroup analysis showed a correlation between CTC number and primary tumor volume in patients with distant (p=0.024) and extra-thoracic (p=0.033) metastasis (not in patients with distant metastasis).
CONCLUSION
Our study showed that CTC numbers may be associated with primary tumor volume in lung adenocarcinomas patients, especially in those with distant metastasis.
8.Circulating Tumor Cell Number Is Associated with Primary Tumor Volume in Patients with Lung Adenocarcinoma
Byung Ju KANG ; Seung Won RA ; Kyusang LEE ; Soyeoun LIM ; So Hee SON ; Jong Joon AHN ; Byung Chul KIM
Tuberculosis and Respiratory Diseases 2020;83(1):61-70
BACKGROUND:
Circulating tumor cells (CTCs) are frequently detected in patients with advanced-stage malignant tumors and could act as a predictor of poor prognosis. However, there is a paucity of data on the relationship between CTC number and primary tumor volume in patients with lung cancer. Therefore, our study aimed to evaluate the relationship between CTC number and primary tumor volume in patients with lung adenocarcinoma.
METHODS:
We collected blood samples from 21 patients with treatment-naive lung adenocarcinoma and 73 healthy individuals. To count CTCs, we used a CTC enrichment method based on fluid-assisted separation technology. We compared CTC numbers between lung adenocarcinoma patients and healthy individuals using propensity score matching, and performed linear regression analysis to analyze the relationship between CTC number and primary tumor volume in lung adenocarcinoma patients.
RESULTS:
CTC positivity was significantly more common in lung adenocarcinoma patients than in healthy individuals (p<0.001). The median primary tumor volume in CTC-negative and CTC-positive patients was 10.0 cm³ and 64.8 cm³, respectively. Multiple linear regression analysis showed that the number of CTCs correlated with primary tumor volume in lung adenocarcinoma patients (β=0.903, p=0.002). Further subgroup analysis showed a correlation between CTC number and primary tumor volume in patients with distant (p=0.024) and extra-thoracic (p=0.033) metastasis (not in patients with distant metastasis).
CONCLUSION
Our study showed that CTC numbers may be associated with primary tumor volume in lung adenocarcinomas patients, especially in those with distant metastasis.
9.Empathy, Awareness and Attitudes toward Violence among Elementary School Students
So Ra KANG ; Haeryun CHO ; Shin-Jeong KIM
Child Health Nursing Research 2020;26(2):164-172
Purpose:
The purpose of this study was to investigate empathy, awareness, and attitudes toward violence among elementary school students.
Methods:
The participants were 195 fifth and sixth grade students in Y elementary school. The data collection period was from June 24 to July 4, 2019.
Results:
Empathy scores significantly differed according to participants' gender and need for education on violence prevention. Attitudes towards violence (permissive and neglectful) significantly differed according to students' grade and need for education on violence prevention. Empathy was negatively correlated with permissive attitudes toward violence (r=-.26, p<.001) and neglectful attitudes toward violence (r=-.24, p=.001).
Conclusion
The results of this study are expected to be utilized as basic data for education on violence prevention through empathy.
10.The Influence of Social Media Affinity on Eating Attitudes and Body Dissatisfaction in Philippine Adolescents
Shannen TADENA ; So Ra KANG ; Shin-Jeong KIM
Child Health Nursing Research 2020;26(1):121-129
Purpose:
This study aimed to examine the influence of social media affinity on eating attitudes and body dissatisfaction among adolescents in the Philippines.
Methods:
The participants were 114 junior high school students enrolled in 7th to 10th grade in Cavite Province, Philippines. The collected data were analyzed in SPSS, using descriptive statistics, the independent t-test, one-way analysis of variance, Pearson correlation coefficients, and stepwise multiple linear regression.
Results:
The factors affecting eating attitudes were body dissatisfaction (β=-.47, p<.001), social media affinity (β=.33, p<.001) and grade (10th grade) (β=-.28, p<.001), and the factors influencing body dissatisfaction were eating attitudes (β=-.65, p<.001) and social media affinity (β=.17, p=.041).
Conclusion
In order to promote healthy eating attitudes and to improve body satisfaction among Philippine adolescents, educational strategies tailored to social media users will be needed.

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