1.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
2.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
;
Conjunctiva
;
Cyclosporine
;
Dry Eye Syndromes
;
Inflammation
;
Lacrimal Apparatus
;
Tears
3.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
;
Retrospective Studies
;
Vision Disorders/epidemiology/*pathology
;
Visual Acuity
;
Young Adult
4.IOP and Gonioscopic Changes after Implantable Contact Lens Implantation in Myopic Eyes.
Yeoun Sook CHUN ; Jong Ho LEE ; Jae Myung LEE ; In Ki PARK
Journal of the Korean Ophthalmological Society 2005;46(2):336-344
PURPOSE: To evaluate the effects of ICL implantation on angle structures, intraocular pressure (IOP) and pupil diameter. METHODS: A Staar implantable contact lens (ICL) was implanted in 81 eyes of 43 patients with spherical equivalent over -6D. Gonioscopy was done 1 day after laser iridotomy and 6 months after ICL implantation and postoperative changes in gonioscopic findings were evaluated. Also IOP and pupil diameter were examined. RESULTS: There were occlusion or narrowing of the LI opening site in 10 eyes (12.3%). Width of angle was wide over 30 degrees in all cases but that was narrowed under 20 degrees in 16 eyes (19.8%) at postoperative 6 months. The mean pigmentation was 2.11 in inferior, 0.47 in nasal, 0.22 in temporal and 0.18 in superior angle at 6 months postoperatively by semiquantitative method (Grade 0~4). There was decrease of pigmentation in nasal and temporal angle but no change in inferior and superior angle after ICL implantation. There was temporary increase of IOP at 1 week and 1 month postoperatively due to steroid eye drops but returned to preoperative level and maintained until the 6 months postoperatively. There was significant decrease of pupil diameter at postoperative 1 and 3 months but returned to the preoperative level at postoperative 6 months. There was no evidence of pigment dispersion syndrome and pigmentary glaucoma. CONCLUSIONS: ICL implantation caused the narrowing of width of angle but did not increase trabecular pigmentation. We expect that ICL implantation is safe about pigment dispersion syndrome and pigmentary glaucoma.
Glaucoma, Open-Angle
;
Gonioscopy
;
Humans
;
Intraocular Pressure
;
Lenses, Intraocular*
;
Ophthalmic Solutions
;
Pigmentation
;
Pupil
5.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
6.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
;
Epilepsy
;
Female
;
Follow-Up Studies
;
Glare
;
Headache
;
Heart Septal Defects, Atrial*
;
Humans
;
Middle Aged
;
Migraine Disorders*
;
Migraine with Aura*
;
Photophobia
;
Recurrence
;
Septal Occluder Device
7.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
;
Glaucoma
;
Humans
;
Telescopes
;
Visual Field Tests
;
Visual Fields
8.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
9.Immunohistochemical Localization of Transglutaminase 4 in the Human Eye.
Yeoun Sook CHUN ; Seung Hee SEO ; In Gyu KIM ; Won Ryang WEE ; Jin Hak LEE
Journal of the Korean Ophthalmological Society 2003;44(8):1872-1878
PURPOSE: Transglutaminase 4 (TGase 4) belongs to a family of enzymes that catalyzes the post-translational modification of proteins. In an attempt to establish its physiological function(s), the distribution of TGase 4 expression in the human eye was determined. METHODS: Ocular tissues obtained from five human whole eyeball postmortem (40(+1) weeks at gestation age, 2 months, 48, 66, 76 years) were stained with monoclonal antibodies against human TGase 4 using indirect immunohistochemical method. RESULTS: TGase 4 was found in the lacrimal glands, corneal epithelium and endothelium, conjunctival epithelium, lens epithelium, retina (inner segment of photoreceptor, external limiting membrane, outer plexiform layer, inner plexiform layer, retinal nerve fiber layer and internal limiting membrane), iris, ciliary muscle, ciliary nonpigmented epithelium and trabecular meshwork. Endothelium of blood vessels in all ocular tissues was also stained. Conjunctival stroma, choroid, anterior tenon's capsule were faintly stained. No evidence of immunostaining for TGase 4 was found in the corneal stroma, iris stroma, lens nucleus, ciliary process, sclera, extraocular muscle and optic nerve. CONCLUSIONS: The expression pattern of TGase 4 was different from those of other TGase isoforms in the human eye. This result may be helpful in further investigation of the role of TGase 4 in the ocular tissue.
Antibodies, Monoclonal
;
Blood Vessels
;
Choroid
;
Corneal Stroma
;
Endothelium
;
Epithelium
;
Epithelium, Corneal
;
Humans*
;
Iris
;
Lacrimal Apparatus
;
Membranes
;
Nerve Fibers
;
Optic Nerve
;
Pregnancy
;
Protein Isoforms
;
Protein Processing, Post-Translational
;
Retina
;
Retinaldehyde
;
Sclera
;
Tenon Capsule
;
Trabecular Meshwork
10.Clinical Effects of Combination Therapy Using Heparin and Phospholipid in Severe Dry Eye Syndrome.
Kwang Sic JOO ; Yeoun Sook CHUN ; Jae Chan KIM
Journal of the Korean Ophthalmological Society 2010;51(8):1047-1053
PURPOSE: To evaluate the therapeutic effects of topical heparin (Hylo-Parin(R), Ursapharm Saarbr cken, Germany) and spray type phospholipids (Tears Again(R), Optima Pharmazeutische GmbH. Freising, Germany) in severe dry eye syndrome resistant to conventional therapy. METHODS: Twenty eyes of ten patients with refractory severe dry eye were treated with Hylo-Parin(R) (two times a day) and Tears Again(R) (three times a day) for three months. Before and one and three months after treatment, a symptom questionnaire was administered to the patients. The ocular surface disease index (OSDI), tear film break-up time, Schirmer test, conjunctival fluorescein staining examinations and filamentary keratitis were evaluated. RESULTS: After using Tears Again(R) and Hylo-Parin(R), the OSDI score improved from 64.13 +/- 15.12 to 43.80 +/- 15.87 (p<0.01). Tear film break-up time significantly increased from 1.0 +/- 0.65 to 2.3 +/- 0.73 seconds (p<0.01) and conjunctival staining score (Oxford scale) significantly decreased from 3.85 +/- 0.75 to 3.25 +/- 0.97 (p<0.01). Filamentary keratitis in the slit-lamp examination showed significant improvement (p<0.01). CONCLUSIONS: Tears Again(R) and Hylo-Parin(R) are considered as new treatment modalities for severe dry eye syndrome and filamentary keratitis in patients with chronic ocular surface disease resistant to conventional therapy. These treatments require additional research.
Dry Eye Syndromes
;
Eye
;
Fluorescein
;
Heparin
;
Humans
;
Keratitis
;
Liposomes
;
Phospholipids
;
Surveys and Questionnaires
;
Tears