1.Individual Identification in Facial Appearance Biometrics Based on Macroscopical Comparison.
De-Min HUO ; Wei-Wei MO ; Fei-Ming ZHAO ; Zi-Hao ZHOU ; Meng DU ; Ji-Long ZHENG ; Kai-Jun MA
Journal of Forensic Medicine 2022;38(3):308-313
Individual identification is one of the research hotspots in the practice of forensic science, and the judgment is usually built on the comparison of the unique biological characteristics of the individual, such as fingerprints, iris and DNA. With the dramatic increase in the number of cases related to video image investigations, there is an increasing need for the technology to identify individuals based on the macroscopic comparison of facial appearance biometrics. At present, with the introduction of computer three-dimensional (3D) modeling and 3D superimposition comparison technology, considerable progress has been made in individual identification methods based on macroscopic comparison of facial appearance biometrics. This paper reviews individual facial appearance biometric methods based on macroscopical comparison, comprehensively analyzes the advantages and limitations of different methods, and puts forward recommendations and prospects for subsequent research.
Biometric Identification
;
Biometry/methods*
;
Face/anatomy & histology*
;
Forensic Sciences/methods*
;
Humans
2.Cataract Surgery Practices in the Republic of Korea: A Survey of the Korean Society of Cataract and Refractive Surgery 2018
Jin Kwon CHUNG ; Hyung Keun LEE ; Mee Kum KIM ; Hong Kyun KIM ; Sun Woong KIM ; Eun Chul KIM ; Hyun Seung KIM
Korean Journal of Ophthalmology 2019;33(5):451-457
PURPOSE: To describe current cataract surgery practice patterns and changing trends among Korean ophthalmologists. METHODS: A survey of members of the Korean Society of Cataract and Refractive Surgery was performed in July 2018. One hundred and two (12.7%) of 801 questionnaires were returned for analysis. The data were analyzed using descriptive statistics and compared with previous surveys. RESULTS: Most of the respondents (75%) had been in practice for 6 or more years and performed an average of 31 cataract surgeries per month. The preferred method for cataract surgery was phacoemulsification (95%); 5% used a femtosecond laser. The use of topical anesthesia markedly increased from 69% (2012) to 80% (2018). The use of optical biometry exceeded that of ultrasound A-scan biometry. A multifocal intraocular lens was used by 76% of the respondents compared with 44% of the respondents in 2012. Topical nonsteroidal anti-inflammatory drugs were used by 70% of the respondents postoperatively. Most (59%) of these anti-inflammatory drugs were prescribed for 4 weeks. CONCLUSIONS: This survey provided a comprehensive update of the present cataract surgery practices in the Republic of Korea. The results emphasized the increasing use of premium intraocular lenses, optical biometry, and topical anesthesia.
Anesthesia
;
Biometry
;
Cataract
;
Lenses, Intraocular
;
Methods
;
Phacoemulsification
;
Refractive Surgical Procedures
;
Republic of Korea
;
Surveys and Questionnaires
;
Ultrasonography
3.Statistical notes for clinical researchers: the independent samples t-test
Restorative Dentistry & Endodontics 2019;44(3):e26-
No abstract available.
Statistics as Topic
;
Models, Statistical
;
Data Interpretation, Statistical
;
Sampling Studies
;
Biometry
4.Refractory Outcomes after Cataract Surgery in Acute Primary Angle-closure Glaucoma Patients Treated with Laser Iridotomy
Hye Seong HWANG ; Dong Yoon KIM ; Hyun Tae KIM ; Ju Byung CHAE ; Sungmin HYUNG
Journal of the Korean Ophthalmological Society 2019;60(5):447-454
PURPOSE: To analyze the accuracy of ocular biometry and prediction of postoperative refraction after cataract surgery in acute primary angle-closure glaucoma (ACG) patients treated with laser iridotomy (LI). METHODS: We retrospectively reviewed the medical records of 44 patients who underwent cataract surgery after LI due to ACG (ACG group), and 37 patients who underwent cataract surgery without ocular disease other than cataract (control group) from January 2015 to May 2018. An Acrysof® single piece (SN60WF) was used as the intraocular lens. We performed preoperative ocular biometry and intraocular lens power calculations using AL-Scan®. The accuracy of the postoperative refractive power prediction was analyzed according to the anterior chamber depth (ACD) and axial length (AL). RESULTS: The preoperative ACD was 2.29 ± 0.32 mm in the ACG group and 3.15 ± 0.27 mm in the control group (p < 0.01), and the respective AL values were 22.53 ± 0.80 mm and 23.87 ± 1.38 mm (p < 0.01). Using the Haigis formula, patients with an ACD < 2.30 mm in the ACG group (0.52 ± 0.36 diopters [D]) had less accurate results in terms of the mean absolute error than patients with an ACD > 2.31 mm in the ACG group (0.27 ± 0.20 D) and control group (0.27 ± 0.20 D). There was no significant difference in the mean absoluter error between each formula in patients with an AL of < 22.0 mm or > 22.1 mm in the ACG and control groups. CONCLUSIONS: Among patients treated with LI due to ACG, those patients with an ACD > 2.31 mm showed no difference in refractory prediction compared to the control group. However, in patients with an ACD < 2.30 mm, the refractory prediction may be inaccurate when using the Haigis formula, a fourth-generation formula that takes into account the ACD.
Anterior Chamber
;
Biometry
;
Cataract
;
Glaucoma, Angle-Closure
;
Humans
;
Lenses, Intraocular
;
Medical Records
;
Refractive Errors
;
Retrospective Studies
5.Accuracy of Predicting Refractive Outcomes Using Swept-source Optical Coherence Tomography in Nuclear Cataracts
Youngju AN ; Hyojin KIM ; Choun Ki JOO
Journal of the Korean Ophthalmological Society 2019;60(11):1043-1049
PURPOSE: To evaluate the accuracy of predicting refractive outcomes of swept-source optical coherence tomography based biometry (ARGOS; Movu Inc., Santa Clara, CA, USA) in nuclear cataracts. METHODS: A total of 107 eyes (107 nuclear cataract patients) were analyzed. Subjects were divided into three groups according to the maximum nuclear density of Pentacam HR (A, lower tertile; B, medium tertile; C, upper tertile). The keratometry and axial length measured by IOLMaster (Carl Zeiss Meditec, Jena, Germany) and ARGOS systems were compared for each group. The correlation between maximum nuclear density and axial length difference readings from the two instruments was evaluated. The mean absolute error between the predicted refraction and 2-month post-operative refraction was compared. RESULTS: The maximum nuclear densities were 28.31 ± 7.30, 51.37 ± 7.82, and 88.63 ± 11.23 for groups A, B, and C, respectively. The axial length measured by ARGOS was significantly longer than that obtained using IOLMaster for groups B and C (respectively, p = 0.035, p < 0.001). A significantly positive correlation was found between the maximum nuclear density and axial length difference of the two devices (p < 0.001). Mean absolute errors were not significantly different between IOLMaster and ARGOS in group A. However, in groups B and C, the mean absolute error using ARGOS (0.31 ± 0.22 D and 0.32 ± 0.20 D, respectively) was significantly lower than that of IOLMaster (0.43 ± 0.21 D and 0.50 ± 0.26 D, respectively) (Group B, p = 0.027; Group C, p = 0.001). CONCLUSIONS: Even in dense nuclear cataracts, accurate refractive outcome prediction was possible using swept-source optical coherence tomography based biometry.
Biometry
;
Cataract
;
Lenses, Intraocular
;
Reading
;
Tomography, Optical Coherence
7.Comparison of Anterior Segment Features between Groups with or without Glaucoma in Pseudoexfoliation Syndrome
Journal of the Korean Ophthalmological Society 2018;59(11):1049-1055
PURPOSE: To investigate the factors associated with glaucoma in patients with pseudoexfoliation syndrome by comparing features of the anterior segments and ocular biometry according to the presence or absence of open-angle glaucoma in pseudoexfoliation syndrome. METHODS: We analyzed 96 patients (115 eyes) diagnosed as having pseudoexfoliation syndrome in this study. The patients were divided into two groups of simple pseudoexfoliation syndrome (64 patients, 76 eyes) and pseudoexfoliation glaucoma (32 patients, 39 eyes). We compared the age, sex, underlying disease, location of pseudoexfoliative material, iris change, degree of nuclear cataract, pupil dilatation, corneal endothelial cell counts, central corneal thickness, anterior chamber depth, axial length, corneal curvature, and intraocular pressure (IOP). RESULTS: There were no significant differences between the two groups in terms of age (p = 0.694), sex (p = 0.161), diabetes (p = 0.440), hypertension (p = 0.238), pseudoexfoliative material observed in anterior capsule (p = 0.700), pupillary margin (p = 0.210), iris depigmentation (p = 0.526), pupillary ruff loss (p = 0.708), degree of nuclear cataract (p = 0.617), pupil dilatation (p = 0.526), central corneal thickness (p = 0.097), anterior chamber depth (p = 0.283), axial length (p = 0.095), or horizontal and vertical corneal curvature (p = 0.066 and 0.306, respectively). In pseudoexfoliation glaucoma, significantly higher IOP (p = 0.026), a high frequency of membrane formation (p = 0.047), and decreased corneal endothelial cell counts (p = 0.048) were observed. CONCLUSIONS: Pseudoexfoliation syndrome with open-angle glaucoma was shown to be associated with high IOP, decreased corneal endothelial cell counts, and a high frequency of membrane formation. Therefore, when such changes are observed in pseudoexfoliation syndrome patients, a higher risk of open-angle glaucoma should be recognized, and careful attentionis required accordingly.
Anterior Chamber
;
Biometry
;
Cataract
;
Dilatation
;
Endothelial Cells
;
Exfoliation Syndrome
;
Glaucoma
;
Glaucoma, Open-Angle
;
Humans
;
Hypertension
;
Intraocular Pressure
;
Iris
;
Membranes
;
Pupil
8.Comparative Efficacy of the New Optical Biometer on Intraocular Lens Power Calculation (AL-Scan versus IOLMaster).
Ahnul HA ; Won Ryang WEE ; Mee Kum KIM
Korean Journal of Ophthalmology 2018;32(3):241-248
PURPOSE: To evaluate the agreement in axial length (AL), keratometry, and anterior chamber depth measurements between AL-Scan and IOLMaster biometers and to compare the efficacy of the AL-Scan on intraocular lens (IOL) power calculations and refractive outcomes with those obtained by the IOLMaster. METHODS: Medical records of 48 eyes from 48 patients who underwent uneventful phacoemulsification and IOL insertion were retrospectively reviewed. One of the two types of monofocal aspheric IOLs were implanted (Tecnis ZCB00 [n = 34] or CT Asphina 509M [n = 14]). Two different partial coherence interferometers measured and compared AL, keratometry (2.4 mm), anterior chamber depth, and IOL power calculations with SRK/T, Hoffer Q, Holladay2, and Haigis formulas. The difference between expected and actual final refractive error was compared as refractive mean error (ME), refractive mean absolute error (MAE), and median absolute error (MedAE). RESULTS: AL measured by the AL-Scan was shorter than that measured by the IOLMaster (p = 0.029). The IOL power of Tecnis did not differ between the four formulas; however, the Asphina measurement calculated using Hoffer Q for the AL-Scan was lower (0.28 diopters, p = 0.015) than that calculated by the IOLMaster. There were no statistically significant differences between the calculations by MAE and MedAE for the four formulas in either IOL. In SRK/T, ME in Tecnis-inserted eyes measured by AL-Scan showed a tendency toward myopia (p = 0.032). CONCLUSIONS: Measurement by AL-Scan provides reliable biometry data and power calculations compared to the IOLMaster; however, refractive outcomes of Tecnis-inserted eyes by AL-Scan calculated using SRK/T can show a slight myopic tendency.
Anterior Chamber
;
Biometry
;
Cimetidine*
;
Humans
;
Lenses, Intraocular*
;
Medical Records
;
Myopia
;
Phacoemulsification
;
Refractive Errors
;
Retrospective Studies
9.Comparison of Ocular Biometry Using New Swept-source Optical Coherence Tomography-based Optical Biometer with Other Devices.
Young Joo CHO ; Tae Hyung LIM ; Kee Yong CHOI ; Beom Jin CHO
Korean Journal of Ophthalmology 2018;32(4):257-264
PURPOSE: To evaluate the agreement between optical biometry with swept-source optical coherence tomography-based optical biometry (IOLMaster 700) and other devices. METHODS: A total of 137 eyes (78 patients) with cataracts were included in this retrospective study. Axial length (AL), anterior chamber depth (ACD), keratometry, and white-to-white (WTW) distance measured using IOLMaster 700 were compared with results for the following five different biometers: IOLMaster 500, A-scan, automated refractor, manual keratometry, and Galilei G4. Differences and correlations among the devices were assessed using the Bland-Altman plot and intraclass correlation coefficient (ICC). RESULTS: For AL values, the IOLMaster 700, IOLMaster 500, and A-scan measurements showed excellent agreement (all ICC >0.99). For ACD values, ICC of IOLMaster 700 and Galilei G4 was 0.965 but A-scan was poorly correlated with either IOLMaster 700 or Galilei G4. The ICCs of IOLMaster 700 and other devices were all greater than 0.9 for average keratometry, but those of the mean cylinder keratometry were all between 0.7 and 0.8. The mean difference in the WTW distance between the IOLMaster 700 and Galilei G4 was 0.029 mm, but the ICC was 0.525. AL measurements were not possible for 10 eyes with the IOLMaster 500 but were obtained in all eyes with the IOLMaster 700. CONCLUSIONS: In clinical practice, AL, ACD, and average keratometry values of IOLMaster 700 can be used interchangeably with those of the other devices tested. However, the ACD value between IOLMaster 700 and A-scan or the WTW distance between IOLMaster 700 and Galilei G4 are not interchangeable because of clinical and statistical differences in measurements between the devices.
Anterior Chamber
;
Biometry*
;
Cataract
;
Cimetidine*
;
Retrospective Studies
10.The influence of statutory holidays on the proportion of the outpatient and emergency visits for influenza-like illness.
T CHEN ; J YANG ; L J WANG ; D Y WANG
Chinese Journal of Epidemiology 2018;39(8):1100-1105
Objective: To analyze the reasons for the fluctuations in the percentage of outpatient or emergency visits for influenza-like illness (ILI) during the Spring Festival and National Day in 2014-2018 surveillance season. Methods: ILI surveillance data was collected during the period of Spring Festival and National Day in mainland China, and downloaded from Chinese Influenza Surveillance Information System, during the 2014-2018 surveillance season. Results: There was no significant difference noticed in the number of ILI reports in the festival week with weeks before or after in both the southern and northern provinces. The number of outpatient visits was much less than that of the week before and after, but the number of emergency visits was statistically significantly increased. Conclusion: In the holiday peak of ILI%, the major causes was the impact of holiday-off at sentinel hospitals, resulting in a large reduction in the number of outpatient visits in the consulting room during the festivals.
Adolescent
;
Adult
;
Biometry
;
Child
;
Child, Preschool
;
China/epidemiology*
;
Disease Outbreaks/prevention & control*
;
Emergency Service, Hospital/statistics & numerical data*
;
Holidays
;
Hospitals
;
Humans
;
Influenza, Human/virology*
;
Outpatients/statistics & numerical data*
;
Population Surveillance
;
Respiratory Syncytial Virus Infections/virology*
;
Respiratory Syncytial Virus, Human/isolation & purification*
;
Respiratory Tract Infections/virology*
;
Seasons
;
Young Adult

Result Analysis
Print
Save
E-mail