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  1. Article ; Online: Retinopathy of prematurity: a review of epidemiology and current treatment strategies.

    Hong, Eun Hee / Shin, Yong Un / Cho, Heeyoon

    Clinical and experimental pediatrics

    2021  Volume 65, Issue 3, Page(s) 115–126

    Abstract: Retinopathy of prematurity (ROP) is among the most common causes of childhood blindness. Three phases of ROP epidemics have been observed worldwide since ROP was first described in the 1940s. Despite advances in neonatal care, the occurrence of ROP and ... ...

    Abstract Retinopathy of prematurity (ROP) is among the most common causes of childhood blindness. Three phases of ROP epidemics have been observed worldwide since ROP was first described in the 1940s. Despite advances in neonatal care, the occurrence of ROP and associated visual impairment has been increasing somewhere on Earth and remains difficult to control. Conventional treatment options for preventing ROP progression include retinal ablation using cryotherapy or laser therapy. With the emergence of anti-vascular endothelial growth factor (anti-VEGF) treatment for ocular diseases, the efficacy and safety of anti-VEGF therapy for ROP have recently been actively discussed. In the advanced stage of ROP with retinal detachment, surgical treatment including scleral buckling or vitrectomy is needed to maintain or induce retinal attachment. At this stage, the visual outcome is usually poor despite successful anatomical retinal attachment. Therefore, preventing ROP progression by timely screening examinations and treatment remains the most important part of ROP management.
    Language English
    Publishing date 2021-10-12
    Publishing country Korea (South)
    Document type Journal Article
    ISSN 2713-4148
    ISSN (online) 2713-4148
    DOI 10.3345/cep.2021.00773
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Severe Retinopathy of Prematurity Associated With Neurodevelopmental Disorder in Children.

    Choi, Young-Jin / Hong, Eun Hee / Shin, Yong Un / Bae, Gi Hwan / Kim, Inah / Cho, Heeyoon

    Frontiers in pediatrics

    2022  Volume 10, Page(s) 816409

    Abstract: Objective: This study aimed to investigate whether severe retinopathy of prematurity (ROP) could be an association factor for neurodevelopmental disorders in premature infants without other risk factors-such as congenital anomalies, birth injuries, and ... ...

    Abstract Objective: This study aimed to investigate whether severe retinopathy of prematurity (ROP) could be an association factor for neurodevelopmental disorders in premature infants without other risk factors-such as congenital anomalies, birth injuries, and neurological diseases-that may cause developmental delay.
    Methods: We used health claims data recorded between 2007 and 2018 in the Korean National Health Insurance Service (KNHIS) database. We recruited a total of 18,256 premature infant born between 2007 and 2008 without congenital anomaly or birth injury (with ROP 6,995, without ROP 11,261) and divided them into four groups as follows: Group A, 209 extremely premature infants [gestational age (GA) < 28] with mild ROP; Group B, 75 extremely premature infants (GA < 28) with severe ROP; Group C, 6,510 other premature infants (28 ≤ GA <37)with mild ROP; and Group D, 201 other premature infants (28 ≤ GA < 37) with severe ROP. Using regression analysis, we analyzed whether there was a correlation between ROP prevalence, severity, and developmental delay in premature infants without other risk factors.
    Results: The prevalence of developmental delay, according to GA and ROP severity, was higher in patients with severe ROP than in the other patients. The prevalence gradually decreased after birth. Among extremely premature infants with ROP, those with severe ROP had a 3.082-fold higher association with neurodevelopmental complications than those with mild ROP (
    Conclusion: The severity of ROP may be associated with neurodevelopmental disorders in premature infants.
    Language English
    Publishing date 2022-02-09
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2711999-3
    ISSN 2296-2360
    ISSN 2296-2360
    DOI 10.3389/fped.2022.816409
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Expression of microRNAs related to apoptosis in the aqueous humor and lens capsule of patients with glaucoma.

    Yu, Hyo Seon / Hong, Eun Hee / Kang, Ji Hye / Lee, Yong Woo / Lee, Won June / Kang, Min Ho / Cho, Heeyoon / Shin, Yong Un / Seong, Mincheol

    Frontiers in medicine

    2024  Volume 11, Page(s) 1288854

    Abstract: Background: The aim of this study is to investigate the expression profiles of microRNAs (miRNAs) related to apoptosis in the aqueous humor (AH) and lens capsule (LC) of patients with glaucoma.: Methods: AH and LC samples were collected from patients ...

    Abstract Background: The aim of this study is to investigate the expression profiles of microRNAs (miRNAs) related to apoptosis in the aqueous humor (AH) and lens capsule (LC) of patients with glaucoma.
    Methods: AH and LC samples were collected from patients with open-angle glaucoma and control participants who were scheduled for cataract surgery. A miRNA PCR array comprising 84 miRNAs was used to analyze the AH (glaucoma,
    Results: Expression levels of 19 and 3 miRNAs were significantly upregulated in the AH and LC samples of the glaucoma group, respectively (
    Conclusion: This is the first study to investigate the differential expression of apoptosis-related miRNAs in the AH and LC of patients with glaucoma. Hsa-miR-193a-5p and hsa-miR-222-3p, which were upregulated in both AH and LC, may be considered potential biomarkers for glaucoma.
    Language English
    Publishing date 2024-02-14
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2775999-4
    ISSN 2296-858X
    ISSN 2296-858X
    DOI 10.3389/fmed.2024.1288854
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Bilateral Fundus Excyclotorsion in Unilateral Superior Oblique Palsy Confirmed by MR Imaging.

    Hong, Eun Hee / Yang, Hee Kyung / Kim, Jae Hyoung / Hwang, Jeong-Min

    Journal of clinical medicine

    2020  Volume 9, Issue 6

    Abstract: Purpose: To determine whether bilateral fundus excyclotorsion is helpful in distinguishing bilateral superior oblique palsy (SOP) from unilateral SOP by investigating bilateral fundus excyclotorsion in unilateral SOP and comparing the features with ... ...

    Abstract Purpose: To determine whether bilateral fundus excyclotorsion is helpful in distinguishing bilateral superior oblique palsy (SOP) from unilateral SOP by investigating bilateral fundus excyclotorsion in unilateral SOP and comparing the features with bilateral SOP using fundus photographs.
    Methods: This retrospective cohort study included a total of 212 subjects who were diagnosed with unilateral SOP with hypoplasia of a single superior oblique (SO) muscle and 7 subjects with clinically diagnosed bilateral SOP. Fundus excyclotorsion angles using modified fovea-disc angles, inter-eye differences in cyclotorsion angles (the difference in fundus excyclotorsion angles: (paretic eye (or hypertropic eye in primary gaze)-fellow eye)), and subjective torsion were compared between groups of unilateral SOP with bilateral fundus excyclotorsion (SOP
    Results: Bilateral fundus excyclotorsion was found in 18 out of 212 patients (8.5%) in the unilateral SOP group, and 7 out of 7 patients (100%) in the bilateral SOP group. Among the 25 patients with bilateral fundus excyclotorsion, the mean angle of excyclotorsion and the inter-eye differences were not significantly different between the unilateral SOP
    Conclusion: Bilateral fundus excyclotorsion was demonstrated not only in bilateral SOP, but also in unilateral SOP at a rate of 8.5%. Bilateral fundus excyclotorsion alone did not prove to be a specific sign in distinguishing bilateral SOP from unilateral SOP.
    Language English
    Publishing date 2020-06-11
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662592-1
    ISSN 2077-0383
    ISSN 2077-0383
    DOI 10.3390/jcm9061829
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Differential expression of aqueous humor microRNAs in central retinal vein occlusion and its association with matrix metalloproteinases: a pilot study.

    Hong, Eun Hee / Hwang, Mina / Yu, Hyoseon / Park, Hyun-Hee / Cho, Heeyoon / Koh, Seong-Ho / Shin, Yong Un

    Scientific reports

    2022  Volume 12, Issue 1, Page(s) 16429

    Abstract: The aim of this study is to investigate the differential expression of microRNAs (miRNAs) in the aqueous humor (AH) of patients with central retinal vein occlusion (CRVO), and their association with AH matrix metalloproteinase (MMP) activity. Eighteen ... ...

    Abstract The aim of this study is to investigate the differential expression of microRNAs (miRNAs) in the aqueous humor (AH) of patients with central retinal vein occlusion (CRVO), and their association with AH matrix metalloproteinase (MMP) activity. Eighteen subjects, including 10 treatment naïve patients with CRVO and 8 control subjects, scheduled for intravitreal injection and cataract surgery, respectively, were included. AH samples were collected at the beginning of the procedure. A microarray composed of 84 miRNAs was performed to identify differentially expressed miRNAs in CRVO AH, which were further analyzed using bioinformatic tools to identify directly related cytokines/proteins. Eight miRNAs (hsa-mir-16-5p, hsa-mir-142-3p, hsa-mir-19a-3p, hsa-mir-144-3p, hsa-mir-195-5p, hsa-mir-17-5p, hsa-mir-93-5p, and hsa-mir-20a-5p) were significantly downregulated in the CRVO group. Bioinformatic analysis revealed a direct relationship among downregulated miRNAs, CRVO, and the following proteins: MMP-2, MMP-9, tumor necrosis factor, transforming growth factor beta-1, caspase-3, interleukin-6, interferon gamma, and interleukin-1-beta. Activities of MMP-2 and -9 in AH were detected using gelatin zymography, showing significant increase in the CRVO group compared to the control group (p < 0.01). This pilot study first revealed that MMP-2 and -9 were directly related to downregulated miRNAs and showed significant increase in activity in AH of patients with CRVO. Therefore, the relevant miRNAs and MMPs in AH could serve as potential biomarkers or therapeutic targets for CRVO.
    MeSH term(s) Aqueous Humor/metabolism ; Biomarkers/metabolism ; Caspase 3/metabolism ; Gelatin/metabolism ; Gene Expression Profiling ; Humans ; Interferon-gamma/metabolism ; Interleukin-1/metabolism ; Interleukin-6/metabolism ; Matrix Metalloproteinase 2/metabolism ; Matrix Metalloproteinase 9/genetics ; Matrix Metalloproteinase 9/metabolism ; MicroRNAs/genetics ; MicroRNAs/metabolism ; Pilot Projects ; Retinal Vein Occlusion/genetics ; Retinal Vein Occlusion/metabolism ; Transforming Growth Factor beta/metabolism ; Tumor Necrosis Factors/metabolism
    Chemical Substances Biomarkers ; Interleukin-1 ; Interleukin-6 ; MicroRNAs ; Transforming Growth Factor beta ; Tumor Necrosis Factors ; Interferon-gamma (82115-62-6) ; Gelatin (9000-70-8) ; Caspase 3 (EC 3.4.22.-) ; Matrix Metalloproteinase 2 (EC 3.4.24.24) ; Matrix Metalloproteinase 9 (EC 3.4.24.35)
    Language English
    Publishing date 2022-09-30
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-022-20834-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Ophthalmic complications in retinopathy of prematurity in the first decade of life in Korea using the national health insurance database.

    Hong, Eun Hee / Shin, Yong Un / Bae, Gi Hwan / Choi, Young Jin / Ahn, Seong Joon / Kim, Inah / Cho, Heeyoon

    Scientific reports

    2022  Volume 12, Issue 1, Page(s) 911

    Abstract: The aim of this study is to investigate the epidemiology of ophthalmic complications of retinopathy of prematurity (ROP) after preterm birth using population-based database in South Korea. Using the National Health Insurance database, ophthalmic ... ...

    Abstract The aim of this study is to investigate the epidemiology of ophthalmic complications of retinopathy of prematurity (ROP) after preterm birth using population-based database in South Korea. Using the National Health Insurance database, ophthalmic complications among premature infants born in 2007-2008 during their 10-year follow-up period were identified. Annual cumulative incidence rate and period prevalence of complications at each age were analyzed among those with ROP and those who underwent treatment for ROP (tROP). The hazard ratios (HRs) according to the presence of ROP and treatment for ROP were also analyzed. We identified 18,256 premature infants, 6995 of whom had ROP. The prevalence at 10th year for overall ophthalmic complications was 11.1% and 35.9% among ROP and tROP, respectively. Strabismus, amblyopia, and glaucoma were the three most common complications. The presence of ROP was associated with higher risk of complications (HR 1.53, 95%CI 1.44-1.61) among premature infants, and the presence of treatment for ROP was associated with higher risk of complications (HR 4.31, 95%CI 3.74-4.98) among ROP cases. This study reports the nationwide epidemiologic data on ophthalmic complications of ROP during the first decade of life, which will help advance our understandings and establish national strategies in managing ROP.
    MeSH term(s) Insurance, Health
    Language English
    Publishing date 2022-01-18
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-021-04616-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Genome-wide association study of the response of patients with diabetic macular edema to intravitreal Anti-VEGF injection.

    Hong, Eun Hee / Yeom, Hoseok / Yu, Hyo Seon / Park, Jong Eun / Shin, Yong Un / Bang, So-Young / Cho, Heeyoon

    Scientific reports

    2022  Volume 12, Issue 1, Page(s) 22527

    Abstract: Diabetic macular edema (DME), a complication of diabetes mellitus, is a leading cause of adult-onset blindness worldwide. Recently, intravitreal anti-VEGF injection has been used as a first-line treatment. This study analyzed the association between the ... ...

    Abstract Diabetic macular edema (DME), a complication of diabetes mellitus, is a leading cause of adult-onset blindness worldwide. Recently, intravitreal anti-VEGF injection has been used as a first-line treatment. This study analyzed the association between the genetic profile of patients with DME and their response to treatment. Intravitreal anti-VEGF injections were administered monthly for three months to Korean patients diagnosed with DME, who were classified into two groups depending on whether they responded to anti-VEGF therapy or showed recurrence within six months. Peripheral blood samples were used for genetic analyses. Genome-wide association analysis results sowed that the genes DIRC3 on chromosome 2 (rs16857280, p = 1.2 × 10
    MeSH term(s) Adult ; Humans ; Macular Edema/drug therapy ; Macular Edema/genetics ; Macular Edema/diagnosis ; Diabetic Retinopathy/drug therapy ; Diabetic Retinopathy/genetics ; Diabetic Retinopathy/complications ; Ranibizumab ; Angiogenesis Inhibitors/therapeutic use ; Genome-Wide Association Study ; Vascular Endothelial Growth Factor A/genetics ; Intravitreal Injections ; Tomography, Optical Coherence/adverse effects ; Retrospective Studies ; Diabetes Mellitus/drug therapy
    Chemical Substances Ranibizumab (ZL1R02VT79) ; Angiogenesis Inhibitors ; Vascular Endothelial Growth Factor A
    Language English
    Publishing date 2022-12-29
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-022-26048-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Traumatic optic neuropathy-associated progressive thinning of the retinal nerve fiber layer and ganglion cell complex: two case reports.

    Lee, Won June / Hong, Eun Hee / Park, Hae Min / Lim, Han Woong

    BMC ophthalmology

    2019  Volume 19, Issue 1, Page(s) 216

    Abstract: Background: Traumatic optic neuropathy (TON) is a form of optic nerve injury that occurs secondary to trauma and is etiologically associated with acute axonal loss with severe vision loss. Here, we reported longitudinal changes in the peripapillary ... ...

    Abstract Background: Traumatic optic neuropathy (TON) is a form of optic nerve injury that occurs secondary to trauma and is etiologically associated with acute axonal loss with severe vision loss. Here, we reported longitudinal changes in the peripapillary retinal nerve fiber layer (RNFL) and macular ganglion cell complex (GCC) using wide-field swept source optical coherence tomography (SS-OCT) in two cases of TON and identified the source of the damage.
    Case presentation: (Case 1) A 65-year-old man was admitted to the hospital due to an injury in the right eye (OD) and was subsequently diagnosed with indirect TON. He was then treated with high-doses of intravenous steroids. Wide-field SS-OCT was performed at the baseline and after 1 day, 2 days, 1 week, 1 month, and 4 months. The wide-field deviation map detected thinning earlier in the macular GCC than in the peripapillary RNFL. (Case 2) A 63-year-old man was admitted to the hospital with a fractured left maxilla-zygomatic complex attributed to blunt-force trauma to the head and loss of vision in his left eye (OS). He was diagnosed with indirect TON and treated with high-doses of intravenous steroids. Wide-field SS-OCT was performed at the baseline and after 1 week, 2 weeks, 2 months 5 months, and 7 months. The wide-field deviation map detected thinning earlier in the peripapillary RNFL than in the macular GCC.
    Conclusions: Wide-field SS-OCT facilitated the identification of various sequential progression patterns in patients with TON. Furthermore, the area in which the structural damage was first detected was seen differently in the peripapillary and macular deviation maps for each case. Thus, wide-field imaging, which includes the macular and peripapillary areas, are useful in monitoring TON.
    MeSH term(s) Aged ; Disease Progression ; Humans ; Male ; Middle Aged ; Nerve Fibers/pathology ; Optic Nerve Injuries/pathology ; Retinal Ganglion Cells/pathology
    Language English
    Publishing date 2019-11-07
    Publishing country England
    Document type Case Reports ; Journal Article
    ZDB-ID 2050436-6
    ISSN 1471-2415 ; 1471-2415
    ISSN (online) 1471-2415
    ISSN 1471-2415
    DOI 10.1186/s12886-019-1232-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Changes in Retinal Vessel and Retinal Layer Thickness After Vitrectomy in Retinal Detachment via Swept-Source OCT Angiography.

    Hong, Eun Hee / Cho, Heeyoon / Kim, Du Roo / Kang, Min Ho / Shin, Yong Un / Seong, Mincheol

    Investigative ophthalmology & visual science

    2020  Volume 61, Issue 2, Page(s) 35

    Abstract: Purpose: To compare postvitrectomy retinal and choroidal vessel density (VD) and retinal layer thickness between eyes with macula-off and macula-on rhegmatogenous retinal detachment (RRD) using swept-source optical coherence tomography (SS-OCT) and ... ...

    Abstract Purpose: To compare postvitrectomy retinal and choroidal vessel density (VD) and retinal layer thickness between eyes with macula-off and macula-on rhegmatogenous retinal detachment (RRD) using swept-source optical coherence tomography (SS-OCT) and optical coherence tomography angiography (OCTA) and to identify OCTA factors associated with visual outcomes.
    Methods: We retrospectively reviewed 31 eyes that underwent pars plana vitrectomy for primary RRD. Eyes with macula-off and macula-on RRD were compared with healthy fellow eyes. Both OCT and OCTA were performed 6 months after surgery, and the macula-off RRD group was divided into two subgroups according to the presence of an outer retinal defect. The correlations between postoperative best-corrected visual acuity (BCVA) at 6 months and SS-OCT and OCTA measurements were analyzed.
    Results: Twenty eyes with macula-off RRD and 11 eyes with macula-on RRD were included. In the macula-off RRD group, the central retinal thickness was significantly decreased 6 months postoperatively compared with the fellow eyes (228.9 ± 29.7 µm and 253.6 ± 27.7 µm, P = 0.009). In the outer retinal defect group, the choriocapillaris plexus (CCP) VD was significantly decreased compared with the fellow eyes (56.4% ± 4.8% and 60.2% ± 4.0%, P = 0.026). In the macula-off RRD group, the postoperative BCVA at 6 months correlated significantly with the ratio of the center CCP VD of the detached eyes to that of the fellow eyes (R2 = 0.207, P = 0.025).
    Conclusions: The CCP VD could be related to the anatomical restoration of the outer retinal layer in macula-off RRD. The CCP VD as determined by OCTA could be an indicator of the visual outcome after surgery in macula-off RRD.
    MeSH term(s) Adult ; Aged ; Female ; Humans ; Macula Lutea/pathology ; Male ; Middle Aged ; Retina/pathology ; Retinal Detachment/pathology ; Retinal Detachment/physiopathology ; Retinal Detachment/surgery ; Retinal Vessels/pathology ; Retrospective Studies ; Tomography, Optical Coherence/methods ; Visual Acuity/physiology ; Vitrectomy/methods
    Language English
    Publishing date 2020-02-21
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 391794-0
    ISSN 1552-5783 ; 0146-0404
    ISSN (online) 1552-5783
    ISSN 0146-0404
    DOI 10.1167/iovs.61.2.35
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Corneal Endothelial Cell Loss after Phacoemulsification in Eyes with a Prior Acute Angle-closure Attack.

    Yeom, Hosuck / Hong, Eun Hee / Shin, Yong Un / Kang, Min Ho / Cho, Hee Yoon / Seong, Mincheol

    Korean journal of ophthalmology : KJO

    2020  Volume 34, Issue 6, Page(s) 432–438

    Abstract: Purpose: To evaluate endothelial damage after cataract surgery in eyes affected by an angle-closure attack (ACA) and compare it to that in the unaffected fellow eyes (FEs) of patients with ACA and normal eyes (NEs).: Methods: The medical data of eyes ...

    Abstract Purpose: To evaluate endothelial damage after cataract surgery in eyes affected by an angle-closure attack (ACA) and compare it to that in the unaffected fellow eyes (FEs) of patients with ACA and normal eyes (NEs).
    Methods: The medical data of eyes affected by ACA, FEs (with no history of acute glaucoma attack), and NEs of patients who underwent cataract surgery with simultaneous intraocular lens implantation were retrospectively reviewed. Endothelial cell density (ECD) and central corneal thickness (CCT) measured before surgery and at 1 week, 1 month, and 3 months after surgery were analyzed, and the percentages of loss in ECD and increase in CCT of the three groups were compared.
    Results: The study enrolled 140 eyes from 100 patients (50 eyes in the ACA group, 40 eyes in the FE group, and 50 eyes in the NE group). The mean ECD was significantly lower in the ACA group than in the other groups (p < 0.001). However, the percentage of ECD reduction was not significantly greater in the ACA group than in the other groups (p > 0.05). None of the eyes developed corneal edema at 3 months postoperatively. Moreover, the CCTs of the three groups were similar throughout the follow-up period (p > 0.05).
    Conclusions: Phacoemulsification was not associated with greater endothelial cell loss in the ACA group than in the NE and FE groups. This finding shows that ACA history may not contribute to the exacerbation of corneal endothelial damage in cataract surgery.
    MeSH term(s) Cataract/complications ; Cell Count ; Corneal Endothelial Cell Loss/diagnosis ; Corneal Endothelial Cell Loss/etiology ; Endothelium, Corneal ; Humans ; Lens Implantation, Intraocular ; Phacoemulsification/adverse effects ; Retrospective Studies
    Language English
    Publishing date 2020-12-03
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 639346-9
    ISSN 2092-9382 ; 1011-8942
    ISSN (online) 2092-9382
    ISSN 1011-8942
    DOI 10.3341/kjo.2020.0040
    Database MEDical Literature Analysis and Retrieval System OnLINE

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