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Fei N, Wang Y, Yang B, Zhang C, Chang D, Liu Z, Cheng L, Fu T, Xian J. Structural and spontaneous functional brain changes in visual and oculomotor areas identified by functional localization task in intermittent exotropia children. Brain Res 2023; 1819:148543. [PMID: 37611887 DOI: 10.1016/j.brainres.2023.148543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 08/18/2023] [Accepted: 08/19/2023] [Indexed: 08/25/2023]
Abstract
Intermittent exotropia (IXT) is characterizedby an intermittent outward deviation of the eyes. Yet, the neural substrates associated with IXT are not fully understood. This study investigated brain structure and spontaneous functional activity changes in children with IXT. All participants underwent detailed ophthalmological examinations and multimodal magnetic resonance imaging (MRI) scanning. During functional scanning, binocular visual stimuli were presented to subjects to determine brain areas involved in visual and oculomotor processing. Regions of interest(ROI) were subsequently selected based on functional activation to investigate brain structural and spontaneous functional differences between IXT children and healthy controls (HCs) using small volume correction (SVC). Reduced gray matter density (GMD) was found in the right frontal eye field (FEF) and bilateral inferior parietal lobe (IPL) in IXT children compared with HCs. Besides, reduced fractional amplitude of low-frequency fluctuations (fALFF) values were observed in the left lingual gyrus, right inferior occipital gyrus (IOG), bilateral IPL, and bilateral cerebellum in the IXT children compared to the HCs. IXT children with worse eye position control ability exhibited lower GMD and fALFF values in these areas. Finally, resting state functional connectivity (RSFC) was reduced in frontoparietal oculomotor processing areas in IXT children compared to HCs. In addition, increased cortical thickness was found in the right visual areas and bilateral IPL. These results showed that IXT-related structural and functional brain abnormalities occurred in childhood and may be related to underlying neuropathological mechanisms.
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Affiliation(s)
- Nanxi Fei
- Department of Radiology, Beijing Tongren Hospital, Capital Medical University, 100730 Beijing, China
| | - Yachen Wang
- Department of Ophthalmology, Beijing Tongren Hospital, Capital Medical University, 100730 Beijing, China; Beijing Ophthalmology & Visual Sciences Key Laboratory, 100730 Beijing, China
| | - Bingbing Yang
- Department of Radiology, Beijing Tongren Hospital, Capital Medical University, 100730 Beijing, China
| | - Chen Zhang
- MR Scientific Marketing, Siemens Healthineers Ltd, 7, Wangjing Zhonghuan South Road, Chaoyang District, 100102 Beijing, China
| | - Di Chang
- Department of Ophthalmology, Beijing Tongren Hospital, Capital Medical University, 100730 Beijing, China; Beijing Ophthalmology & Visual Sciences Key Laboratory, 100730 Beijing, China
| | - Zhihan Liu
- Department of Ophthalmology, Beijing Tongren Hospital, Capital Medical University, 100730 Beijing, China; Beijing Ophthalmology & Visual Sciences Key Laboratory, 100730 Beijing, China
| | - Luyao Cheng
- Department of Ophthalmology, Beijing Tongren Hospital, Capital Medical University, 100730 Beijing, China; Beijing Ophthalmology & Visual Sciences Key Laboratory, 100730 Beijing, China
| | - Tao Fu
- Department of Ophthalmology, Beijing Tongren Hospital, Capital Medical University, 100730 Beijing, China; Beijing Ophthalmology & Visual Sciences Key Laboratory, 100730 Beijing, China.
| | - Junfang Xian
- Department of Radiology, Beijing Tongren Hospital, Capital Medical University, 100730 Beijing, China.
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Chen XX, Chen W, Hu H, Zhao M, Liu H, Xu XQ, Wu FY, Wang J. Altered interhemispheric functional connectivity in patients with comitant exotropia before and after surgery: a resting-state fMRI study. Front Hum Neurosci 2023; 17:1095431. [PMID: 37576471 PMCID: PMC10416095 DOI: 10.3389/fnhum.2023.1095431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 07/13/2023] [Indexed: 08/15/2023] Open
Abstract
Purpose To assess the interhemispheric homotopic connectivity alterations in patients with comitant exotropia (CE) before and after surgery, using resting-state functional magnetic resonance imaging (rs-fMRI) with voxel-mirrored homotopic connectivity (VMHC). Methods Thirty-four patients with CE and twenty-four well-matched healthy controls (HCs) were enrolled to undergo a preoperative rs-fMRI scan. The rs-fMRI scan was performed again in twenty-four patients 1 month after surgery. The VMHC method was applied to evaluate the group differences of interhemispheric functional connectivity. The correlations between VMHC values and clinical variables were analyzed in the patient group. Results Compared with HCs, 34 patients with CE showed significantly increased VMHC values in occipital lobe (cuneus/superior occipital gyrus/middle occipital gyrus/calcarine), cerebellar area 8/cerebellar Crus1 area, and cerebellar Crus1 area. In CE group, VMHC in the cuneus was positively correlated with stereoacuity (r = 0.417, P = 0.014), meanwhile VMHC in the cerebellar Crus1 area was positively correlated with stereoacuity (r = 0.395, P = 0.021). One month after surgery, the 24 CE patients with follow-up showed decreased VMHC values in the cuneus and superior occipital gyrus compared with preoperative collection, meanwhile, non-significant difference compared with HCs. Conclusion Our study revealed the interhemispheric homotopic connectivity changes of patients with CE in the occipital lobe and cerebellum before and after surgery. The findings may provide a new perspective for the neurological alterations of CE.
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Affiliation(s)
- Xiang-Xun Chen
- Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wen Chen
- Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Hao Hu
- Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Meng Zhao
- Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Hu Liu
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiao-Quan Xu
- Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Fei-Yun Wu
- Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jie Wang
- Department of Interventional Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Zhang B, Wu D, Guo Y, Yan W, Liu X, Yang Z, Deng J, Wang H. Altered large-scale internetwork functional connectivity in patients with vestibular migraine and migraine without aura. Neurosci Lett 2023; 800:137123. [PMID: 36780940 DOI: 10.1016/j.neulet.2023.137123] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 01/19/2023] [Accepted: 02/09/2023] [Indexed: 02/13/2023]
Abstract
OBJECTIVE To investigate large-scale internetwork functional connectivity in patients with vestibular migraine (VM) and migraine without aura (MwoA). METHODS Resting-state functional magnetic resonance imaging data from 34 VM patients, 34 MwoA patients, and 33 healthy controls (HCs) were collected and the results were analyzed using independent component analysis (ICA). We also analyzed the correlations between clinical data and internetwork functional connectivity. RESULTS In contrast to HCs, MwoA patients showed decreased functional connectivity between the left frontoparietal network (lFPN) and right frontoparietal network (rFPN), with increased functional connectivity between the sensorimotor network (SMN) and lateral visual network (lVN). When compared to MwoA patients, VM patients demonstrated decreased functional network connectivity between the dorsal attention network (DAN) and posterior medial visual network (pmVN), between the SMN and pmVN, and between the SMN and lVN. Meanwhile, increased functional network connectivity was found between the lFPN and rFPN; however, there was no significant difference in functional network connectivity between VM patients and HCs. In addition, associations were found between clinical data and internetwork functional connectivity. CONCLUSION Functional connectivity between the lFPN and rFPN was reduced in patients with MwoA compared with HCs, which may indicate functional impairment in cognitive control, attention, somatosensory perception, and emotion regulation in patients with MwoA. VM patients showed decreased functional connectivity between the DAN, SMN, pmVN and lVN compared to patients with MwoA, which could account for the multisensory integration abnormalities and be the cause of vestibular symptoms in VM patients. These findings offer fresh perspectives on the pathophysiology of VM and MwoA.
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Affiliation(s)
- Bing Zhang
- Department of Neurology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Dongpeng Wu
- Department of Neurology, the First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yonghua Guo
- Department of Radiology, Qingdao Municipal Hospital, Qingdao, China
| | - Wenjing Yan
- Department of Neurology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xuejun Liu
- Department of Radiology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Zhengjie Yang
- Department of Neurology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jin Deng
- Department of Neurology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Haiping Wang
- Department of Neurology, The Affiliated Hospital of Qingdao University, Qingdao, China.
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Mo Y, Mao C, Yang D, Ke Z, Huang L, Yang Z, Qin R, Huang Y, Lv W, Hu Z, Xu Y. Altered neuroimaging patterns of cerebellum and cognition underlying the gait and balance dysfunction in cerebral small vessel disease. Front Aging Neurosci 2023; 15:1117973. [PMID: 36967823 PMCID: PMC10032207 DOI: 10.3389/fnagi.2023.1117973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 02/13/2023] [Indexed: 03/05/2023] Open
Abstract
BackgroundThe mechanism of gait and balance dysfunction (GBD) in cerebral small vessel disease (CSVD) remains unclear. Evidence supports cognition engages in GBD of CSVD. The cerebellum is important in motor and cognition, while little is known about the influence of the cerebellum on GBD in CSVD.MethodsThis study is a retrospective cohort study. All participants of this study were enrolled from the CSVD individuals in Nanjing Drum Tower Hospital from 2017 to 2021. The GBD of CSVD patients was defined as Tinetti Test score ≤ 23. Cerebral cortical thickness, cerebellar gray matter volume, the amplitude of low-frequency fluctuation, functional connectivity, and modular interaction were calculated to determine the cortical atrophy and activity patterns of CSVD patients with GBD. The effect of cognitive domains during GBD in CSVD patients was explored by correlation analyses.ResultsA total of 25 CSVD patients were recruited in CSVD patients with GBD group (Tinetti Test score ≤ 23, mean age ± standard deviation: 70.000 ± 6.976 years), and 34 CSVD patients were recruited in CSVD patients without GBD group (Tinetti Test score > 23, mean age ± standard deviation: 64.029 ± 9.453 years). CSVD patients with GBD displayed worse cognitive performance and cortical atrophy in the right cerebellum VIIIa and bilateral superior temporal gyrus than those without GBD. The right postcentral gyrus, left inferior temporal gyrus, right angular gyrus, right supramarginal gyrus and right middle frontal gyrus were functionally overactivated and showed decreased modular interaction with the right cerebellum. Tinetti Test scores were negatively related to the volume of the right cerebellum VIIIa in CSVD patients with GBD. Notably, memory, especially visuospatial memory, was greatly associated with GBD in CSVD.ConclusionThe cortical atrophy and altered functional activity in sensorimotor area and ventral attention network in the cerebellum and cerebrum may underlying the GBD in CSVD. Memory might be critically cognitively responsible for GBD in CSVD.
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Affiliation(s)
- Yuting Mo
- Department of Neurology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China
| | - Chenglu Mao
- Medical School, State Key Laboratory of Pharmaceutical Biotechnology, Department of Neurology, Drum Tower Hospital, Institute of Brain Science, Nanjing University, Nanjing, China
- Nanjing Neurology Clinic Medical Center, Nanjing, China
| | - Dan Yang
- Department of Neurology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China
| | - Zhihong Ke
- Department of Neurology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China
| | - Lili Huang
- Medical School, State Key Laboratory of Pharmaceutical Biotechnology, Department of Neurology, Drum Tower Hospital, Institute of Brain Science, Nanjing University, Nanjing, China
- Nanjing Neurology Clinic Medical Center, Nanjing, China
| | - Zhiyuan Yang
- Medical School, State Key Laboratory of Pharmaceutical Biotechnology, Department of Neurology, Drum Tower Hospital, Institute of Brain Science, Nanjing University, Nanjing, China
- Nanjing Neurology Clinic Medical Center, Nanjing, China
| | - Ruomeng Qin
- Medical School, State Key Laboratory of Pharmaceutical Biotechnology, Department of Neurology, Drum Tower Hospital, Institute of Brain Science, Nanjing University, Nanjing, China
- Nanjing Neurology Clinic Medical Center, Nanjing, China
| | - Yanan Huang
- Medical School, State Key Laboratory of Pharmaceutical Biotechnology, Department of Neurology, Drum Tower Hospital, Institute of Brain Science, Nanjing University, Nanjing, China
- Nanjing Neurology Clinic Medical Center, Nanjing, China
| | - Weiping Lv
- Medical School, State Key Laboratory of Pharmaceutical Biotechnology, Department of Neurology, Drum Tower Hospital, Institute of Brain Science, Nanjing University, Nanjing, China
- Nanjing Neurology Clinic Medical Center, Nanjing, China
| | - Zheqi Hu
- Medical School, State Key Laboratory of Pharmaceutical Biotechnology, Department of Neurology, Drum Tower Hospital, Institute of Brain Science, Nanjing University, Nanjing, China
- Nanjing Neurology Clinic Medical Center, Nanjing, China
| | - Yun Xu
- Department of Neurology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China
- Medical School, State Key Laboratory of Pharmaceutical Biotechnology, Department of Neurology, Drum Tower Hospital, Institute of Brain Science, Nanjing University, Nanjing, China
- Nanjing Neurology Clinic Medical Center, Nanjing, China
- Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing Drum Tower Hospital, Nanjing, China
- *Correspondence: Yun Xu,
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Guo J, Chen Y, Huang L, Liu W, Hu D, Lv Y, Kang H, Li N, Peng Y. Local structural-functional connectivity decoupling of caudate nucleus in infantile esotropia. Front Neurosci 2022; 16:1098735. [PMID: 36620443 PMCID: PMC9815444 DOI: 10.3389/fnins.2022.1098735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 12/08/2022] [Indexed: 12/24/2022] Open
Abstract
Abnormal brain structural and functional properties were demonstrated in patients with infantile esotropia (IE). However, few studies have investigated the interaction between structural and functional connectivity (SC-FC) in patients with IE. Structural network was generated with diffusion tensor imaging and functional network was constructed with resting-state functional magnetic resonance imaging for 18 patients with IE as well as 20 age- and gender- matched healthy subjects. The SC-FC coupling for global connectome, short connectome and long connectome were examined in IE patients and compared with those of healthy subjects. A linear mixed effects model was employed to examine the group-age interaction in terms of the coupling metrics. The Pearson correlation between coupling measures and strabismus degree was evaluated in IE patients, on which the regulatory effect of age was also investigated through hierarchical regression analysis. Significantly decreased SC-FC coupling score for short connections was observed in left caudate nucleus (CAU) in IE patients, whereas no brain regions exhibited altered coupling metrics for global connections or long connections. The group-age interaction was also evident in local coupling metrics of left CAU. The age-related regulatory effect on coupling-degree association was distinguishing between brain regions implicated in visual processing and cognition-related brain areas in IE patients. Local SC-FC decoupling in CAU was evident in patients with IE and was initiated in their early postnatal period, possibly interfering the visual cortico-striatal loop and subcortical optokinetic pathway subserving visual processing and nasalward optokinesis during neurodevelopment, which provides new insight into underlying neuropathological mechanism of IE.
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Affiliation(s)
- Jianlin Guo
- Imaging Center, MOE Key Laboratory of Major Diseases in Children, Beijing Children’s Hospital, National Center for Children’s Health, Capital Medical University, Beijing, China
| | - Yuanyuan Chen
- Tianjin International Joint Research Center for Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
| | - Lijuan Huang
- Department of Ophthalmology, Beijing Children’s Hospital, National Center for Children’s Health, Capital Medical University, Beijing, China,Department of Ophthalmology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Wen Liu
- Department of Ophthalmology, Beijing Children’s Hospital, National Center for Children’s Health, Capital Medical University, Beijing, China
| | - Di Hu
- Imaging Center, MOE Key Laboratory of Major Diseases in Children, Beijing Children’s Hospital, National Center for Children’s Health, Capital Medical University, Beijing, China
| | - Yanqiu Lv
- Imaging Center, MOE Key Laboratory of Major Diseases in Children, Beijing Children’s Hospital, National Center for Children’s Health, Capital Medical University, Beijing, China
| | - Huiying Kang
- Imaging Center, MOE Key Laboratory of Major Diseases in Children, Beijing Children’s Hospital, National Center for Children’s Health, Capital Medical University, Beijing, China
| | - Ningdong Li
- Department of Ophthalmology, Beijing Children’s Hospital, National Center for Children’s Health, Capital Medical University, Beijing, China,Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing, China,*Correspondence: Ningdong Li,
| | - Yun Peng
- Imaging Center, MOE Key Laboratory of Major Diseases in Children, Beijing Children’s Hospital, National Center for Children’s Health, Capital Medical University, Beijing, China,Yun Peng,
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Xi S, Zhou Y, Yao J, Ye X, Zhang P, Wen W, Zhao C. Cortical Deficits are Correlated with Impaired Stereopsis in Patients with Strabismus. Neurosci Bull 2022:10.1007/s12264-022-00987-7. [DOI: 10.1007/s12264-022-00987-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 09/21/2022] [Indexed: 12/13/2022] Open
Abstract
AbstractIn this study, we explored the neural mechanism underlying impaired stereopsis and possible functional plasticity after strabismus surgery. We enrolled 18 stereo-deficient patients with intermittent exotropia before and after surgery, along with 18 healthy controls. Functional magnetic resonance imaging data were collected when participants viewed three-dimensional stimuli. Compared with controls, preoperative patients showed hypoactivation in higher-level dorsal (visual and parietal) areas and ventral visual areas. Pre- and postoperative activation did not significantly differ in patients overall; patients with improved stereopsis showed stronger postoperative activation than preoperative activation in the right V3A and left intraparietal sulcus. Worse stereopsis and fusional control were correlated with preoperative hypoactivation, suggesting that cortical deficits along the two streams might reflect impaired stereopsis in intermittent exotropia. The correlation between improved stereopsis and activation in the right V3A after surgery indicates that functional plasticity may underlie the improvement of stereopsis. Thus, additional postoperative strategies are needed to promote functional plasticity and enhance the recovery of stereopsis.
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Chen F, Hu Z, Liu H, Zhen F, Liu C, Li Q. Altered Homotopic Connectivity in the Cerebellum Predicts Stereopsis Dysfunction in Patients With Comitant Exotropia. Front Hum Neurosci 2022; 16:917769. [PMID: 35721355 PMCID: PMC9201504 DOI: 10.3389/fnhum.2022.917769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 05/09/2022] [Indexed: 11/13/2022] Open
Abstract
Purpose Comitant exotropia (CE) is a common eye disorder characterized by impaired stereoscopic vision and eye deviation. Previous neuroimaging studies demonstrated that patients with CE were accompanied by specific functional and structural abnormalities of the brain. However, the effect of impaired stereoscopic vision and eye deviation on interhemispheric homotopic connectivity remains unknown. Methods A total of thirty-six patients with CE (25 males and 11 females) and 36 well-matched healthy controls underwent magnetic resonance imaging scanning. The voxel-mirrored homotopic connectivity (VMHC) method was applied to assess the interhemispheric homotopic connectivity changes in patients with CE. Furthermore, the support vector machine method was applied to assess to differentiate patients with CE from healthy controls (HCs) with the VMHC maps as a feature. Results Compared with HCs, patients with CE showed significantly increased VMHC values in the bilateral cerebelum_ 8 and cerebelum_4_5. Moreover, we found that the VMHC maps showed an accuracy of 81.94% and an area under the curve of 0.87 for distinguishing the patients with CE from HCs. Conclusion Our study demonstrates that patients with CE showed interhemispheric homotopic connectivity changes in the cerebellum, which might reflect the neurological mechanisms of impaired stereoscopic vision and eye deviation in patients with CE.
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Affiliation(s)
- Fei Chen
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- *Correspondence: Fei Chen,
| | - Zhirou Hu
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Hui Liu
- Department of Ophthalmology, Jiangxi Provincial People’s Hospital, Nanchang, China
| | - Fangyuan Zhen
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Chenlu Liu
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Qiuming Li
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Qiuming Li,
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