• Title/Summary/Keyword: Ocular lens

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Dry Eye Syndrome and Ocular Fatigue according to the Status of Contact Lens Wearing and Management among Female University Students (여대생의 콘택트렌즈 착용 및 관리 실태에 따른 안구건조증과 눈 피로)

  • Her, Sun;Kim, Kye Ha
    • Research in Community and Public Health Nursing
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    • v.25 no.4
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    • pp.259-269
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    • 2014
  • Purpose: The purpose of this study was to examine dry eye syndrome and ocular fatigue according to the status of contact lens wearing and management among female university students. Methods: The subjects were 195 female university students wearing contact lenses. Ocular Surface Disease Index (OSDI) and Virtual Reality Symptom Questionnaire (VRSQ) were used to determine the level of dry eye syndrome and ocular fatigue. The SPSS/WIN 21.0 program was used for analysis of data. Results: Significant differences in the level of dry eye syndrome were observed according to the period of case solution change (F=3.36, p=.037) and the reasons for the change of lens (F=4.56, p=.004). In ocular fatigue, significant differences were observed according to the price of lens (F=3.53, p=.031), rinse in storing lens in a case (t=-2.57, p=.011), and learning about contact lens (t=-2.01, p=.046). A significant positive correlation was observed between dry eye syndrome and ocular fatigue in the subjects. Conclusion: The results of this study show that some subjects have problems in wearing and management of contact lenses. Therefore, an education program related to contact lenses should be provided to contact lens wearers to improve the status of wearing and management of contact lenses.

THE CONTACT LENS RELATED CASE REPORTS IN PEDIATRIC POPULATION I -Congenital Cataract With Divergent Squint (콘택트렌즈에 연관된 소아집단 I 에서 증례 보고 -개산성 사시를 가지는 선천성 백내장)

  • Chen, Ai-Hong;Kim, Douk Hoon
    • Journal of Korean Ophthalmic Optics Society
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    • v.9 no.1
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    • pp.75-79
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    • 2004
  • Some ocular complications were connected to the contamination by the contact lens related. Especially the most cause of ocular complications was a microorganism from several processing of infections. Therefore the patients stopped the contact lens wear immediately by the side effects of ocular pathology. We had analyzed the microorganism from the laboratory. It was identified as mixed growth of the Chryseamonas meningosepticum and Enterobacter sp.

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THE CONTACT LENS RELATED CASE REPORTS IN PEDIATRIC POPULATION II

  • Chen, Ai-Hong;Kim, Douk-Hoon;Sung, A-Young
    • Journal of Korean Ophthalmic Optics Society
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    • v.10 no.3
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    • pp.237-240
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    • 2005
  • The cause of poor visual acuity was connected to the damage by the ocular trauma related. Especially the most cause of visual disorder was identified as irregular pupil by ocular damage. Therefore most patients stopped the wearing of the contact lens immediately by the visual decrease effects from irregular pupil disorder. But we had suggested that the contact lens wear was a very intensive visual therapy. We had identified the visual recover from several tests using the contact lens treatment.

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Ocular Lens Test using Elastic Wave (탄성파를 이용한 안경렌즈 검사)

  • Joung, Maeng-Sig;Cho, Hyun-Soo
    • Journal of Korean Ophthalmic Optics Society
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    • v.4 no.1
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    • pp.37-43
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    • 1999
  • Ocular lens failure can be verified by measuring the elastic wave velocity diffraction patterns of monochromatic wave applied with elastic wave were detected using optical heterodyne method. The elastic wave velocity was measured by analysing the diffraction patterns. According to measured results of the longitudinal elastic wave velocity of the middle index-refraction and high index-refraction lens are 6588.5575 m/s and 3973.53 m/s, respectively.

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The Effects of Drugs, including Alcohol, on Ocular Health and Contact Lens Wear (약물과 알코올이 눈과 콘택트렌즈에 미치는 영향)

  • Kim, Jae-Min
    • Journal of Korean Ophthalmic Optics Society
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    • v.5 no.1
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    • pp.73-81
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    • 2000
  • This review on ocular toxicology concentrates on the effects on ocular health and contact lens wear induced by systemically used drugs, including alcohol. Many systemically administered drugs produce ocular adverse effects. Fortunately, relatively few are capable of causing significant, irreversible visual impairment. The visual symptoms of acute intoxication are as follows : Drop in vision/visual acuity, diplopia, poor dark adaptation, increase in time for glare recovery, early cataract, decreased depth perception, blue-yellow or red-green colour defect and visual hallucinations. Blinking pattern, tear production, and discoloration of contact lenses can be affected by some systemic or local ocular medications. The cornea, conjunctiva, or eyelids may react to some systemic medications and to some preservatives used in contact lens solutions. The hydrogel contact lens act as a drug reservoir that emits the drug over time. I discuss management of contact lens-induced infectious and inflammatory conditions.

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A Study of the Power of Glasses Lens and that of Trial Lens (안경렌즈와 굴절측정렌즈의 굴절력 관계에 대한 연구)

  • Kim, Jin Koo;Kang, Myung Gi
    • Journal of Korean Ophthalmic Optics Society
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    • v.3 no.1
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    • pp.263-267
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    • 1998
  • Today's diopter of optical lens can reveal the derivation apparently compared with that of refraction measure lens. First, this is applicable when there is a difference in the shape and thickness basically and when the lens is used for a short distance. When measure and use it, an astigmatic difference is occurred by the discordant light passage. This is also applicable to optical lens with prism diopter lens and in some cases, must be corrected relating to the diopter incidently.

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A Study on Electromagnetic Shield Coating of Ocular Lens (안경렌즈의 전자파 차폐 코팅에 관한 연구)

  • Kim, Ki-Hong;Park, Dae-Jin;Kim, In-Su
    • Journal of Korean Ophthalmic Optics Society
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    • v.11 no.2
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    • pp.115-119
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    • 2006
  • Electromagnetic shielding, transparent ITO coating layers have deposited on ocular lens substrate by magnetron sputtering. We investigated the effect induced by the substrate temperature on coating layer. The characteristics of the coating layers were analyzed using surface profiler, four-point probe, XRD, spectrophotometer and Auger Electron spectroscopy. As substrate temperature became higher, carrier concentration was increased and transmittance in the visible region was increased, too.

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A Study on the Method for the Local Transmittance Measurements of the Ocular Lens (안경 렌즈의 국소적 투과율 측정을 위한 방법에 관한 연구)

  • Park, Sang-Kook;Ri, Hyeong-Cheol;Youk, Do-Jin;Sung, Duk-Yong;Kang, Sung-Soo
    • Journal of Korean Ophthalmic Optics Society
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    • v.19 no.4
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    • pp.471-477
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    • 2014
  • Purpose: We have analyzed the transmittance distribution of the ocular lens using local transmittance microscope to investigate the optical homogeneity of the lens. Methods: The transmittance of the laser which is focused on the surface of the ocular lens was measured by using the photo-detector and lock-in amplifier and analyzed. Multi-coated, uncoated, and progressive lenses were analyzed. Results: In the measurement of the progressive lens and a physical stimulated lens, local transmittance microscopy analysis showed a high degree of match with the measurement results through the optical microscope. In addition, the average value of the transmittance is reduced and the standard deviation was increased in the presence of optical defects. In unstimulated lens, there are a large impact on transmittance whether the anti-reflective coating is presence or absence in both the local transmittance microscopy and general transmittance analysis. Conclusions: The distribution of the transmittance measured by local transmission microscopy were changed when the various stimulus is applied to the lenses. These analyzes by local transmission microscopy can be utilized as a way to evaluate or determine the uniformity of the coating film or lens.

Application of superficial keratectomy and soft contact lens for the treatment of symblepharon in a cat: a case report

  • Kim, Youngsam;Kang, Seonmi;Seo, Kangmoon
    • Journal of Veterinary Science
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    • v.22 no.2
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    • pp.19.1-19.5
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    • 2021
  • A 7-month-old intact female Persian cat was diagnosed with symblepharon accompanied by epiphora, brownish ocular discharge, and ocular discomfort in the left eye. Superficial keratectomy (SK) was performed to remove adhesions between the conjunctiva and cornea. To prevent re-adhesion after SK, the detached conjunctival tissue was sutured to the corneal limbus, and a soft contact lens (SCL) was inserted and a partial temporary tarsorrhaphy was performed. The SCL and tarsorrhaphy sutures were maintained for 22 days, and symblepharon did not recur 347 days postoperatively. SK combined with SCL is a relatively easy and cost-effective surgical option for feline symblepharon.