1.Epidemiologic Aspects of Medical Retirement from the Republic of Korea Army due to Visual Impairment.
Jae Hoon JEONG ; Yeoun Sook CHUN ; Ki Ho PARK
Journal of Korean Medical Science 2016;31(4):623-629
This study was done to report the epidemiologic characteristics of medical retirement from the Republic of Korea (ROK) Army due to visual impairment and to suggest a practical screening system for the draft. The medical records of 423 eyes of 301 patients who retired from the ROK Army due to visual impairment were reviewed retrospectively between January 2010 and December 2014. The patients were grouped by the presence of trauma, and each group was subdivided by military rank. We analyzed demographic and ophthalmic data, including the etiology of ophthalmologic disease. The etiology was classified into 5 anatomical categories (ocular surface, lens, retina, optic nerve and extraocular visual pathway, and extraocular muscle and orbit), which were then subdivided into the type of disease. The mean age was 24.5 years, and non-traumatic mechanisms accounted for 81.1% (343/423 eyes) of medical retirements. Visual acuity was better in patients without trauma. In enlisted soldiers, disease in the optic nerve and extraocular visual pathway was the most common anatomical category (40.5%), and primary open angle glaucoma (30.8%), retinal dystrophy (18.3%), congenital cataract (14.5%), and retinal detachment (9.7%) were the four most common diseases. Most medical retirements due to visual impairment resulted from non-traumatic mechanisms, even though patients were young. The fundus examination and visual field test would be more useful tools than a conventional vision test for large-scale draft screening for the most common two disease types: primary open angle glaucoma and retinal dystrophy.
Adult
;
Cataract/epidemiology
;
Cohort Studies
;
Glaucoma, Open-Angle/epidemiology
;
Humans
;
Male
;
Middle Aged
;
Military Personnel
;
Republic of Korea/epidemiology
;
Retinal Dystrophies/epidemiology
;
*Retirement
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Retrospective Studies
;
Vision Disorders/epidemiology/*pathology
;
Visual Acuity
;
Young Adult
2.Chanages of Central Corneal Endothelial Cells Following Phacoemulsification Through a Temporal Clear Corneal Incision under Topical Anesthesia.
Journal of the Korean Ophthalmological Society 1999;40(2):409-416
To evaluate the changes of the central corneal endothelial cell density and morphology after phacoemulsification and foldable silicone intraocular lens(IOL) implantation through a 3.2mm temporal clear corneal incision under topical anesthesia. On 43 patients(43 eyes) who had no systemic and ocular disease to influence the status of corneal endothelium , central corneal thickness, central corneal endothelial celldensity, pleomorphism index and polymegathism index, there was significant increase at 1 day postoperatively and recovery to preoperative state at 2 months poeroperatively. Central corneal endothelial cell losses were 8.92% at 1 day postoperatively and 15.95% at 2 months poeroperatively(p=0.00) and statistically significant increase of polymegathism index was noted at 1 day and 2 months poeroperatively. However no significant difference in central corneal endothelial cell loss and polymegathism index was noted at 6 months postoperatively. From the above results, we concluded that the phacoemulsification through a temporal clear corneal incision under topical anesthesia decreases the central corneal endothelial cell density and increase polymegathism index of the corneal endothelial cells, but these changes become stabilized after postoperative 2 months. Also proper control group must be set up to detect causes of corneal endothelial cell loss and it is neede to estalblish a new criteria for safe corneal endothelial cell density.
Anesthesia*
;
Corneal Endothelial Cell Loss
;
Endothelial Cells*
;
Endothelium, Corneal
;
Phacoemulsification*
;
Silicones
3.Current Concepts and Therapeutic Management of Dry Eye.
Journal of the Korean Medical Association 2007;50(9):842-847
The majority of dry eye symptoms are due to a chronic inflammation of the lacrimal functional unit resulting in a loss of tear film integrity and normal function. The tear secretion is controlled by the lacrimal functional unit consisting of the ocular surface (cornea, conjunctiva, and meibomian glands), the main lacrimal gland, and the interconnecting innervation. A lack of systemic androgen support to the lacrimal gland has been shown to be a facilitating factor in the initiation of ocular inflammation. If any portion of this functional unit is compromised, lacrimal gland support to the ocular surface is impeded. In this review, the classification and treatment of dry eye syndrome will be presented according to the A Delphi approach.
Classification
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Conjunctiva
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Cyclosporine
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Dry Eye Syndromes
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Inflammation
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Lacrimal Apparatus
;
Tears
4.The Effects of a Subtenoncapsular Injection of Bevacizumab for Ocular Surface Disease With Corneal Neovascularization.
Jae Hoon JEONG ; Yeoun Sook CHUN ; Jae Chan KIM
Journal of the Korean Ophthalmological Society 2009;50(10):1475-1482
PURPOSE: To investigate the effect of an injection of bevacizumab into the sub-Tenon's capsule on ocular surface neovascularization disease including pterygium and corneal neovascularization. METHODS: Twenty-five eyes of 21 patients with pterygium and 19 eyes of 15 patients with corneal neovascularization were given an injection of 5 mg bevacizumab into the sub-Tenon's capsule. The clinical effects and complications were evaluated by analyzing the changes in anterior segment photo, visual acuity, and intraocular pressure at week one, week two, week four, and every month thereafter. RESULTS: After injections of bevacizumab, partial remission of corneal neovascularized lesion was observed in five eyes (20%) of the pterygium group, and there were no significant changes in the visual acuity and no complications. In the corneal neovascularization group, corneal neovascularized lesions of 18 eyes (95%: 2 eyes, complete remission 16 eyes, partial remission) improved after injections of the bevacizumab and the scores of extent and severity of corneal neovascularized lesion improved significantly, unlike the pterygium group. The visual acuity of two eyes (11%) improved more than two lines of Yong-Han Jin's distance visual acuity test and there were no systemic side effects. Localized side effects included four eyes (21%) with punctate epithelial erosions and two eyes (11%) with temporary, elevated intraocular pressure in the corneal neovascularization group. The side effects improved without any additional treatment. CONCLUSIONS: An injection of bevacizumab into the sub-Tenon's capsule is more effective in fresh lesions of corneal neovascularization disease than in old and stable lesions of pterygium. Therefore, it could be used as a prominent treatment of various corneal neovascularization diseases.
Antibodies, Monoclonal, Humanized
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Corneal Neovascularization
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Eye
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Humans
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Intraocular Pressure
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Pterygium
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Visual Acuity
;
Bevacizumab
5.The Wound Healing Effects of AmniSite-Lens in Rabbits.
Tae Hyung KIM ; Yeoun Sook CHUN ; Jae Chan KIM
Journal of the Korean Ophthalmological Society 2013;54(2):338-345
PURPOSE: The effects of AmniSite-Lens on wound healing were evaluated for a burn wound on a rabbit cornea. METHODS: A chemical burn was inflicted on the cornea of rabbits using 0.1N NaOH and a superficial keratectomy with trephine was performed. The control group consisted of rabbits with a bandage contact lens (Focus Lens) after the operation. In the other group, the AmniSite-Le was applied on the rabbits' cornea. The rabbits were evaluated for the following: 1) the time of epithelialization; 2) the grade of corneal opacity; and 3) the histological analysis by evaluation of inflammatory reaction and apoptotic keratocytes. RESULTS: In the alkali-burn model, the time of epithelialization in the AmniSite-Lens group was not statistically significant compared with the bandage contact lens group. There was no difference of corneal opacity at postoperative week 1. The corneal opacity in the AmniSite-Lens group was clearer than the bandage contact lens group at postoperative weeks 4 and 8 and the difference of corneal opacity was statistically significant. In the keratectomy model, the time of epithelialization in the AmniSite-Lens group was not statistically significant compared with the bandage contact lens group. The corneal opacity in the AmniSite-Lens group was clearer than the bandage contact lens group at postoperative weeks 1 and 4 and the difference of corneal opacity was statistically significant. CONCLUSIONS: The AmniSite-Lens has both the wound healing effect of an amniotic membrane and the convenience of a bandage contact lens.
Amnion
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Bandages
;
Burns
;
Burns, Chemical
;
Cornea
;
Corneal Opacity
;
Rabbits
;
Wound Healing
6.Recurrent Occlusion of Laser Iridotomy Sites After Posterior Chamber Phakic IOL Implantation.
In Ki PARK ; Je Myung LEE ; Yeoun Sook CHUN
Korean Journal of Ophthalmology 2008;22(2):130-132
We report a case of recurrent occlusion of laser iridotomy (LI) sites after a Visian ICL (Implantable contact lens version 4, Staar Surgical AG, Nidau, Switzerland) implantation. A 45-year-old woman had bilateral ICL implantation after placement of two peripheral LI sites in each eye to prevent pupillary block. At one month after the operation, severe narrowing or occlusion of four LI sites occurred. After this, although she received four additional LIs at postoperative months 1, 6, 9 and 10 in both eyes, the narrowing or occlusion recurred. Mild chronic anterior chamber inflammation was observed intermittently throughout the follow-up period. We performed clear lens extraction in both eyes (at postoperative month 11 in the left eye and month 26 in the right eye) due to recurrent occlusion of the LI sites and excess trabecular meshwork pigment deposition presumably caused by the four repeated LIs. Recurrent obstruction of LI sites can occur after ICL implantation. These problems were unresolvable despite four repeated laser iridotomies. The risks associated with anterior uveitis must be considered when planning an ICL implantation.
Female
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Humans
;
Iridectomy/*methods
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Iris/*surgery
;
*Laser Therapy
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Lasers, Solid-State
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Lens Implantation, Intraocular/*adverse effects
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Middle Aged
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*Phakic Intraocular Lenses
;
Pigment Epithelium of Eye/pathology
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*Postoperative Complications
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Recurrence
;
Reoperation
;
Trabecular Meshwork/pathology
;
Uveitis, Anterior/etiology
7.A Case of Migraine with Aura Related to the Percutaneous Closure of Atrial Septal Defect.
Joon Hyung YEO ; Sang Wook KIM ; Yeoun Sook CHUN
Journal of the Korean Ophthalmological Society 2016;57(11):1817-1820
PURPOSE: To report a case of migraine attacks with aura that occurred after percutaneous closure of an atrial septal defect (ASD) with the Amplatzer septal occluder device. CASE SUMMARY: A 58-year-old female presented with glare and scintillation that lasted 3 days. She had a history of percutaneous ASD intervention 3 weeks prior. Because ophthalmologic examination revealed nothing remarkable, the patient underwent observation. However, two months later, she revisited our department, presenting with aggravated glare, scintillation, and severe photophobia. Also, she presented with scintillation followed by a headache starting from the right temporal area extending to the occipital area. The patient was diagnosed with migraine with aura, which was newly developed after percutaneous ASD closure. After switching medication from acetylsalicylic acid to clopidogrel, the frequency and intensity of the headaches were reduced. No recurrence of ophthalmic symptoms or headache was observed during the 1-year follow-up. CONCLUSIONS: Percutaneous closure of ASD can be complicated by the appearance of migraine attacks with aura. When patients present with glare and scintillation, ophthalmologists must consider the possibility of migraine with aura and migraine induced by secondary causes. Thus, detailed history taking should be taken in order to make an early diagnosis of migraine.
Aspirin
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Early Diagnosis
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Epilepsy
;
Female
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Follow-Up Studies
;
Glare
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Headache
;
Heart Septal Defects, Atrial*
;
Humans
;
Middle Aged
;
Migraine Disorders*
;
Migraine with Aura*
;
Photophobia
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Recurrence
;
Septal Occluder Device
8.Comparison of Mean Deviation Between Integrated Binocular Visual Field and Monocular Visual Field.
Journal of the Korean Ophthalmological Society 2013;54(6):919-926
PURPOSE: To compare the mean deviation (MD) between monocular and integrated binocular visual field (BVF). METHODS: Thirty-six patients with glaucoma in at least 1 eye were recruited for the present study. Seventy-two threshold sensitivities of the BVF were obtained without additional visual field test by the Best Location and Binocular Summation methods using the 2 monocular visual fields of central 30degrees. The MD of the BVF was obtained by comparison to the value distribution in the age-matched population with normal BVF. After defining the better eye with the better MD value from the 2 eyes, comparison of the MDs between individual eyes and the integrated BVF were assessed. In addition, the MDs between the integrated BVF and actual BVF were compared in 11 patients. RESULTS: In patients with a mean age of 58.7 years, the MD of the better eye was -2.3 dB, and the worse eye was -4.9 dB (p < 0.01). There was a significant difference between the 2 MDs derived from Best Location and Binocular Summation (-1.7 and -2.0 dB, respectively p = 0.045). The MDs according to BVF more improved than the better eye (p < 0.01 for both). There was no significant difference in MDs between integrated BVF and actual BVF (-1.9 vs -2.0, -2.3 vs -2.0, respectively p > 0.1). CONCLUSIONS: The integrated BVF more improved than the better eye. When providing guidance to glaucoma patients regarding therapeutic decisions considering the MD of IVF may be important.
Eye
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Glaucoma
;
Humans
;
Telescopes
;
Visual Field Tests
;
Visual Fields
9.A Case of Congenital Accessory Punctum and Canaliculus in a Dry Eye Patient.
Jong Hwa PARK ; Yeoun Sook CHUN ; Jae Chan KIM
Journal of the Korean Ophthalmological Society 2006;47(7):1132-1135
PURPOSE: We report a case of congenital accessory punctum and canaliculus in a patient with dry eye, which had not previously been reported in Korea. METHODS: A 56-year old woman presented with dry eye that was more pronounced in the left eye than in the right. An accessory punctum was found in the left medial canthus. Dacryocystogram showed that the accessory punctum had an independent canaliculus which was connected to a normal upper canaliculus. RESULTS: The symptoms were relieved after permanent punctal occlusion of the lower and accessory puncta. CONCLUSIONS: Severe dry eye can be induced by congenital accessory punctum and canaliculus.
Dry Eye Syndromes
;
Female
;
Humans
;
Korea
;
Middle Aged
10.Autologous Tragal Perichondrium Transplantation: A Novel Approach for the Management of Painful Bullous Keratopathy.
Kyoung Woo KIM ; Yeoun Sook CHUN ; Jae Chan KIM
Korean Journal of Ophthalmology 2013;27(3):149-157
PURPOSE: To introduce autologous tragal perichondrium transplantation as a novel surgical modality for the management of intractable symptomatic bullous keratopathy. METHODS: In three eyes of three patients with painful bullous keratopathy, autologous tragal perichondria were transplanted on the corneal surface with the human amniotic membrane transplanted above. We included an additional three eyes of three patients with painful bullous keratopathy who received amniotic membrane transplantation only to serve as controls. Clinical symptom outcomes were assessed using a visual analogue scale at postsurgical months 1, 3, 5, 7, and 9. In addition, transplanted tragal perichondrium and amniotic membrane complex tissue button obtained from one patient who underwent penetrating keratoplasty was evaluated by immunohistochemical analysis of CD34, vimentin, and alcian blue staining. RESULTS: All three patients who underwent autologous tragal perichondrium and human amniotic membrane co-transplantation showed improvements in pain and tearing. However, all three patients in the control group experienced aggravation of tearing and no further improvement of pain 3 months after surgery. In addition, one patient in the control group developed premature degradation of the amniotic membrane. Histopathologic and immunohistochemical analysis showed intact surface epithelization and positive CD34, vimentin and alcian blue staining of transplanted tragal perichondria. CONCLUSIONS: The tragal perichondrium has a high mechanical structural force and high potency due to well-organized epithelization and the presence of mesenchymal stem cells. Autologous tragal perichondrium transplantation may be an effective modality for the management of painful bullous keratopathy.
Adult
;
Aged
;
Amnion/*transplantation
;
Corneal Diseases/*pathology/*surgery
;
Ear Cartilage/*transplantation
;
Female
;
Humans
;
Keratoplasty, Penetrating/*methods
;
Male
;
Middle Aged
;
Transplantation, Autologous
;
Treatment Outcome