• Title/Summary/Keyword: Ocular

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Ocular Filariasis in Canine Anterior Chamber (개 전안방 안구사상충증)

  • 김기홍;엄혜윤;나기정;양만표
    • Journal of Veterinary Clinics
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    • v.16 no.2
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    • pp.506-508
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    • 1999
  • An one-year-old, female pointer dog with conjunctival hyperemia, corneal opaque and ocular pain in right eye was referred to Veterinary Medical Teaching Hospital, Chungbuk National University. In the ophthalmic examination the worm was observed in anterior chamber, The heart worm antigen test was positive. A modified Knott's test was negative. The values of complete blood count and serum chemistry (TP, BUN, creatinine, AST, ALT, ALP, albumin, globuline) showed normal ranges. Any abnormality was not detected in the heart using a thoracic radiography and cardiac sonography. Therefore, this dog was diagnosed as ocular filariasis. The worm was removed by surgical incision through a limbus of cornea. The closure of limbal incision was sutured in a simple interrupted suture pattern with 6-0 silk and the eye was reinflated with sterile saline solution. Antibiotics and dexamethasone ophthalmic solution were applied to right eye every 24 hours for 7 days. To prevent latent filariasis, ivermectin was also administered on day 14 of operation. The heart worm antigen test on day 60 was negative. The dog was successfully cured.

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A Survey of Ophthalmic Diseases in Korean Jindo dogs (한국 진도견의 안과질환에 관한 연구)

  • 서강문;장광호;정종태;연성찬;이계웅;남치주
    • Journal of Veterinary Clinics
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    • v.18 no.3
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    • pp.215-225
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    • 2001
  • This study presented the results of ophthalmic examinations performed on 545 Korean Jindo dogs. The most prevalent ocular variation within normal limits was hyoid vessel remnant (12.7%) and prominence of lens suture was also noticed (1.7%). The most common ocular diseases were retinal scars (6.8%), focal cataract (4.6%) and persistent pupillary membrane (4.2%). Inherited ocular diseases found in this study were persistent pupillary membrane (4.2%), persistent hyperplastic primary vitreous (0.6%), retinal dysplasia (0.6%), entropion (0.4%) and progressive retinal atrophy (0.4%). The prevalence of ocular diseases was higher in Male than in Female and proportionately higher in the older dogs. The most prevalence was shown in white coat color dogs. The fundus color changes according to the age was not related in coat colors and shown same pattern.

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Ocular Bacteria and Concentration of Lactoferrin in Poodle Dogs with Tear Staining Syndrome (Tear Staining Syndrome을 보이는 Poodle에 있어서 내안각의 세균총 및 눈물의 Lactoferrin 함량)

  • Seo Kang-moon;Park Yong-ho;Nam Tchi-chou
    • Journal of Veterinary Clinics
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    • v.12 no.1
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    • pp.829-837
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    • 1995
  • This study was performed to evaluate the effects of ocular bacteria and tear lactoferrin on the Tear Staining Syndrome(TSS) in poodle dogs. Staphylococcus, Klebsiella, Micrococcus and Pseudomonas were the most Prevalent microorganisms isolated in normal eyes of poodle dogs, whereas the predominant isolates in the poodle dogs with TSS were Micrococcus, Staptococcus and Staphylococcus. There were no significant differences between the normal and tear-stained poodle dogs in the quantity of tear lactoferrin. In vitro hair staining experiment, bacteria isolated from the eyes with TSS and lactoferrin didn't stain hair. The results have shown that either ocular bacteria or tear lactoferrins were not related to the TSS.

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Recording and interpretation of ocular movements: spontaneous and induced nystagmus

  • Jin-Ju Kang;Seoyoung Choi;Seunghee Na;Sun-Young Oh
    • Annals of Clinical Neurophysiology
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    • v.25 no.1
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    • pp.10-18
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    • 2023
  • The ultimate purpose of eye movement is to maintain clear vision by ensuring that images of observed objects are focused on the fovea in the retina. Accurate evaluation of ocular movements, including nystagmus and saccadic intrusions, provides very useful information for determining the overall function and abnormality of the complex oculomotor system, from the peripheral vestibular system to the cerebrum. Eye movement tests are therefore essential for the accurate diagnosis of patients who complain of dizziness and imbalance. They help to predict lesion locations from the peripheral vestibular system to the central cerebral cortex and play an important role in differentiation from other diseases. The methodology of recording and interpreting ocular movements using video-oculography are described in this review article.

Ocular adnexal mucosa-associated lymphoid tissue lymphoma: a narrative review

  • Chung, Hyun Uk;Son, Jun Hyuk
    • Journal of Yeungnam Medical Science
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    • v.39 no.1
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    • pp.3-11
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    • 2022
  • Lymphoma is the most common primary tumor of the orbit, accounting for 55% of all orbital malignancies. When divided into histopathological subtypes, extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue (MALT lymphoma) comprises the largest proportion. Clinical manifestations are unspecific, but in patients with slow-growing painless orbital mass, or red conjunctival lesion suggestive of 'salmon patch', ocular adnexa lymphoma (OAL) should be suspected. Although the pathogenetic mechanism of ocular adnexal MALT lymphoma (OAML) is not yet fully understood, the relationship between OAML and Chlamydia psittaci has been hypothesized recently, similar to that between gastric MALT lymphoma and Helicobacter pylori. This suggests a new treatment option for OAML; bacterial eradication therapy with systemic antibiotics. Several other treatment methods for OAML have been introduced, but no treatment guidelines have been established yet. In this article, we summarize the current knowledge on the clinical features, pathogenesis, diagnostic methods, therapeutic strategies, and prognosis of OAML.

Effects of Various Laser Wavelengths and Power Densities on the Ocular Damage in Pigmented Rats

  • Chung, Phil-Sang;Shin, Jang-In;Chang, Moo-Hwan;Chang, So-Young;Kang, Jung-Wook;Hwang, Hee-Jun;Ahn, Jin-Chul
    • Biomedical Science Letters
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    • v.14 no.3
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    • pp.173-178
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    • 2008
  • With the widespread use of laser in medical and industrial settings, the incidence of laser injury to the ocular continues to grow among workers involved in handling lasers. The aim of this study is to compare ocular damages after irradiation with various laser wavelengths and power density. Ocular of pigmented rats was irradiated with $CO_2$ laser, 1064 nm Nd:YAG laser, and 532 nm diode laser. We observed damage of cornea, lens, and retina using slit lamp microscope and funduscopy. H&E staining of histopathology were applied to study the specimens. The higher exposure ($200mW/cm^2$, 10 sec) with $CO_2$ laser resulted in severe damage at the cornea. For the 1064 nm Nd:YAG laser, the higher exposure than $10mW/cm^2$ (10 sec) resulted in damage at the cornea and lens. Further, with the 532 nm diode laser, retinal lesions were induced when $10mW/cm^2$ (0.25 sec) was delivered to the eye. Theses results suggest that the ocular damages are different from various laser wavelength and power density.

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Ocular Inspection Using Color Analysis in CIE Lab for Kidney Disease in Various Situations (다양한 환경 하에서 신장 질환 진단을 위한 색차 기반 찰색 방법의 제안)

  • Lee, Se-Hwan;Cho, Dong-Uk
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.35 no.4B
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    • pp.630-636
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    • 2010
  • Ocular inspection in oriental medicine, which identifies sickness by patient's skin color, is usually applied by doctor's subjective judgment. In order to reduce the subjectiveness of diagnosis, we propose a method of objective and quantitative analysis for ocular inspection. The most issued features for ocular inspection are how to identify the color of patients' face in various situations, and how to link the relation between color and sickness. For resolving these two issues, the color system of CIE Lab is adopted for analyzing and classifying the color characteristics. The classification of color features is verified by experiments on groups of patients and non-patients. The results of experiments showed that the proposed method can provide an objective means for ocular inspection using patient's skin color.

Time-dependent Changes of Ocular Functions after Alcohol Ingestion (알코올 섭취 후 시간경과에 따른 시 기능의 변화)

  • Kim, Sang-Yoeb;Moon, Byeong-Yeon;Lee, Sun Haeng;Cho, Hyun Gug
    • Journal of Korean Ophthalmic Optics Society
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    • v.14 no.1
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    • pp.133-138
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    • 2009
  • Purpose: This study was designed to investigate the changes of vision and ocular functions induced by increase of blood alcohol level. Methods: Blood alcohol level, vision, refractive errors, near point convergence, heterophoria, and relative convergence were measured at 1 h, 4 h, and 24 h after acute alcohol ingestion of 0.7 g per kg body weight. Results: At 1 h after alcohol ingestion, myopization and ocular functions which measured near point convergence, positive and negative convergences, and degree of heterophoria remarkedly worked a changes accompanied with the maximum value of blood alcohol level. But at 24 h after that, all of ocular functions were recovered to degree of 90~99% compared with non-alcoholic normal conditions. Conclusions: As the increase of blood alcohol level is able to induce the significant changes of visual acuity and ocular functions, opticians have to understand thoroughly the patient's conditions by alcohol ingestion before refractive test and ocular examinations.

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The Effects of Eye Health and Dynamic Visual Activity on Eye Movement in University Students (안구운동이 대학생의 눈 건강과 동체시력에 미치는 영향)

  • Kim, Ju-Hyun
    • Journal of Korea Entertainment Industry Association
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    • v.14 no.6
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    • pp.191-199
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    • 2020
  • Younger generations use a variety of visual media, such as smartphones, televisions, and computers. Due to the development of visual media, the health of eye was weakening. Therefore, this study aimed to investigate the effects of eye health and dynamic visual activity on eye muscle stimulation with eye movement and therapeutic massage in university students. 38 university students in their 20s were divided into a control group(18) and an experimental group(20). The experimental group performed eye movement and therapeutic massage every 30 minutes for 5 times a week for 4 weeks. Ocular fatigue, maximal blinking interval, ocular surface temperature, and dynamic visual activity were measured before and after 4 weeks. Ocular fatigue was decreased significantly after 4 weeks (p<.05), and maximal blinking interval was increased significantly after 4 weeks (p<.05). Ocular surface temperature was not showed a significant difference after 4 weeks (p>.05), and dynamic visual activity was increased significantly after 4 weeks (p<.05). Therefore, eye movement and therapeutic massage are recommended for the improvement of eye function and eye health. It is expected to be used as research data to restore and prevent for eye health.

Correlation Analysis of Ocular Dominance and Levator Palpebrae Superioris Muscle Function (주시안과 눈꺼풀 올림근 기능의 상관관계 분석)

  • Ha, Ki-Young;Suh, Hyeun-Woo;Kim, Boo-Yeong;Kim, Tae-Yeon;Park, Sung-Gyu
    • Archives of Plastic Surgery
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    • v.37 no.3
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    • pp.265-270
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    • 2010
  • Purpose: Most of the bilateral structures in our body are not perfectly balanced, such that one side is preferred than the other or it has physiological superiority. Eyes also have an imbalance; the eye with sensory and motional superiority compared to the other is called dominant eye. Authors of this study focused on analyzing the correlation between the dominant eye and levator palpebrae superioris muscle. Methods: The subject of this study was 42 patients with no ptosis and with no past history of blepharoplasty. Hand dominance was identified through questionnaire and dominant eye was identified by hole-in-the-card dominance test (Dolman's test) in all patients. The function of levator palpebrae superioris muscle was measured by MLD (marginal limbal distance). During the measuring procedure, frontalis muscle was not inhibited to avoid the eyelid skin hooding. Results: Out of 42 patients, 27 patients (64.3%) were right ocular dominant, 15 patients (35.7%) were left ocular dominant, 36 patients (85.7%) were right hand dominant and 4 patients (9.5%) were left hand dominant. Out of 27 right ocular dominant patients, right MLD was larger than the left in 26 patients (96.3%). It was larger in average of 0.47 mm (p<0.001) in 27 right ocular dominant patients. Also, left MLD was larger than the right in 11 patients (73.3%) out of 15 left ocular dominant patients. It was larger in average of 0.57 mm (p=0.003) in 27 left ocular dominant patients. MLD on the side of the dominant eye was larger in average of 0.50 mm (p<0.001) than the MLD of non-dominant eye side. Right MLD was larger than the left in average of 0.28mm (p=0.010) in right hand dominant patients, and left MLD was larger than the right in average of 1.15 mm (p=0.025) in left hand dominant patients. Conclusion: The function of levator palpebrae muscle differs in right and left, and the difference correlates with the dominant eye. Also, the function of levator palpebrae muscle is stronger in the dominant eye. We were able to present statistical evidence regarding the difference of the function in right and left levator palpebrae muscle. This may be a factor worth consideration in terms of balancing the eyes during the blepharoplasty.