• Title/Summary/Keyword: Hyperopia

Search Result 71, Processing Time 0.02 seconds

The Study on Change of Refractive error and Addition in Progressive Eyeglasses Lens Wearers (누진렌즈안경 착용자의 가입도와 굴절이상 변화에 대한 연구)

  • Joo, Seok-Hee;Shim, Moon-Sik;Shim, Jun-Beom
    • Journal of Korean Ophthalmic Optics Society
    • /
    • v.18 no.4
    • /
    • pp.399-404
    • /
    • 2013
  • Purpose: This study was to analyse the changes of refractive error and addition in progressive eyeglasses lens wearers. Methods: Data of 244 subjects who have been prescribed progressive eyeglasses lenses were used for analysis. The range of age was between 43~69 old years and they visited the optical shop in Gwangju metropolitan city from 2003 to 2013. According to the refractive state and age, The changes of refractive error and addition was analysed respectively. Results: The changes of distance refractive power by refractive error was showed +0.10 D in emmetropia, +0.07 D in myopia, +0.23 D in hyperopia (p=0.000). The change of addition was showed +0.22 D in emmetropia, +0.29 D in myopia, +0.17 D in hyperopia (p=0.000). The changes of distance power and addition by age was +0.08 D distance refractive power, +0.30 D addition in the group of 40~49 old years, +0.17 D distance refractive power, +0.20 D addition in the group of 50~59 old years and +0.15 D distance refractive power, +0.14 D addition in the group of 60~69 old years (p=0.046, p=0.006). Conclusions: The changes of refractive error and addition of progressive eyeglasses lens wearers in all refractive state and age were gradual increase in the direction (+) diopter.

Survey on the Refractive Errors Status in the First Wearing Glasses (최초 안경착용시의 굴절이상 상태 조사)

  • Kim, Hye-Ran;Jang, Seong-Ju;Shim, Hyun-Seog
    • Journal of Korean Ophthalmic Optics Society
    • /
    • v.13 no.1
    • /
    • pp.113-117
    • /
    • 2008
  • Purpose: This study is to survey that uncomfortable feeling of visual acuity in the first wearing glasses, the number of visiting in age, above vision ranging and refractive errors, astigmatism, and anisometropia. Methods: Automatic refraction and naked visual acuity test executed to receive prescription glasses that the man 509 and women's 499 people visited for the first time, among 3~15 years old who visited an ophthalmoiogical hospital, from January to December, 2003. Results: The first wearing glasses started 3 years old and the most cases was 8~9 years old when they were visited visual acuity 0.5 to 0.7 in most cases. Refractive errors appeared 8 years old and its most plentifully with 20.4%, 92.2% was myopia and 5.2% was hyperopia for the man. Also cases of women was 91.9% for myopia and 5.1% for the hyperopia. Spherical equivalent power was S-1.50${\pm}$1.10D and appeared 62.3% for the low myopia. Astigmatism was appeared 44.6% for the with the rule astigmatism and 75% was cylinder power lower than 1.00D. Cases of simple astigmatism need to glass when was cylinder power C-1.37${\pm}$1.01D, and C-0.50D appeared most distribution. More than 2.00D anisometropia appeared 2.3% for the whole subjective. Conclusions: Of the first wearing glasses visual acuity is 0.5~0.7, spherical equivalent power is S-1.50${\pm}$1.10D, cylinder power of simple astigmatism is C-1.37${\pm}$1.01D.

  • PDF

Effect of Spectacles Correction on the Improvement of Visual Acuity in Hyperopic Amblyopia (원시성 약시에서 안경교정에 의한 시력개선 효과)

  • Park, Hyun-Ju
    • Journal of Korean Ophthalmic Optics Society
    • /
    • v.12 no.2
    • /
    • pp.95-106
    • /
    • 2007
  • The purpose of this study was to investigate effect of spectacle correction therapy instead of occlusion therapy for refractive amblyopia treatment. Spectacle correction were prescribed to give the same effect as a occlusion therapy by under correction for normal eye and there was no additional treatment but only spectacle correction for hyperopic amblyopia. The results can be summarized as follows: 1. In hyperopic amblyopia after correction, initial visual acuity($Mean{\pm}SD$) was $0.36{\pm}0.13$ and final visual acuity($Mean{\pm}SD$) was $0.82{\pm}0.23$. 2. Regardless with age, there was significant differences between initial acuity and final acuity, it shows improvement in visual acuity after spectacle correction treatment. 3. Initial correction age did not influence the length of treatment and success rate of treatment, so that ambyopia correction effect not related with age. 4. Compared with initial visual acuity with final visual acuity, initial visual acuity was in proportion to final visual acuity. 5. Incidence was higher in hyperopia and hyperopic astigmatism than myopia and myopic astigmatism in refractive amblyopia group and the therapy was more effective for hyperopia and hyperopic astigmatism than myopia and myopic astigmatism. 6. Treatment was effective even for children who is older than 8 years.

  • PDF

A Study of Eye Refraction State on Male Old Age (노인 남성의 안굴절 상태에 대한 연구)

  • Yoo, Jae Tae;Kim, Douk Hoon
    • Journal of Korean Ophthalmic Optics Society
    • /
    • v.5 no.2
    • /
    • pp.21-25
    • /
    • 2000
  • The old age may experienced the visual acuity decrease according to refraction abnormality and they have a inconvenient real life style on viewing condition. So that, This study can provide the accurate information on the treatment of visual acuity of a male old ages by test of eye refraction state. The test was performed the visual acuity test by the object and subject methods.and the subjects was the Korean male over 55 old age. The eye types were 0.8 % positive for emmetropia, 15.2 % for myopia, and 84 % for hyperopia, respectively. The abnormal refraction eyes were 1.3 % positive for simple myopic astigmatism, 13.9 % for compound myopic astigmatism. 3.4 % for simple hyperopia and 3.1 % for simple hyperopic astigmatism, 77.5 % for mixed astigmatism, respectively. The asix of astigmatisms were 62% positive for against-the-rule astigmatism, 6% for with-the rule astigmatism, and 32 % for oblique astigmatism, respectively. On the total myopic spherical power, the $-0.50{\leq}$spheric equivalent <-2.00 diopter was 84.3%, the $-2.00{\leq}$spherical equivalent <-6.00.diopter was 15.7%. On the total hyperopic spherical power, the $+0.50{\leq}$spheric equivalent <+2.00 diopter was 74.2%, the $+2.00{\leq}$spherical equivalent <+6.00 diopter was 24.8%, and anything over the +6.00 diopter was 1%. On the astigmatic power, the $0.5{\leq}$cylinder <1.00 diopter was 54.1%, the $1.00{\leq}$cylinder <2.00 diopter was 32.4%, and anything over the 2.00 cylinder diopter was 13.5%.

  • PDF

Research about the Distribution of Refractive Errors in Distinction of Gender and at Age of Kyonggi Province's Part Area (경기도 일부지역의 성별, 연령별 굴절이상 분포에 관한 연구)

  • Lee, Eun-Hee;Lee, Hee-Jung;Cho, Sung-Il;Paek, Do-Myung
    • Journal of Korean Ophthalmic Optics Society
    • /
    • v.11 no.2
    • /
    • pp.121-129
    • /
    • 2006
  • Prevalence of refractive error have revealed variation in relation to ethnicity, educational level, age, gender, and social economic status. Especially prevalence of refractive error varies by country, estimation of prevalence of refractive error have shown increase in Asia than in Western world. The present report aimed to investigate the prevalence of refractive errors by the age and gender in Korean population without eye disease. A total of 960 subjects were sampled and their refractive error was determined using Auto refractometer. Prevalence of emmetropia was 29% and that for myopia and hyperopia was 67%, 4%, respectively. Astigmatism was 22%, and the simple astigmatism was 1%. However the compound astigmatism was 99%. Prevalence of refractive errors differed significantly among age and gender group in our results. The percentages of with-the-rule, against-the-rule and oblique astigmatism among people with astigmatism were 36.6%, 20.7% and 42.7% for right eye and 31.8%, 10% and 58.1% for left eye.

  • PDF

A test of Visual Acuity and Refractive error to Kindergarten's Children (유치원 어린이 나안시력과 굴절이상 측정)

  • Kang, I.S.
    • Journal of Korean Ophthalmic Optics Society
    • /
    • v.3 no.1
    • /
    • pp.87-92
    • /
    • 1998
  • Unaided visual acuity was tested by ACP-7 TOPCON chart projector on 376 kindergarteners and objective refraction error was measured by NIDEK ARK-700A auto-refractokeratometer on 554 eyes aged 3 to 5. The results were as follows ; The average unaided visual acuity of children aged 3 was 0.82, aged 4 was 0.90 and aged 5 was 0.92 respectively theerfore children s visual acuity has been gradually developed with their age. The kind of refractive error was 1% for hyperopia, 14% for hyperopic astigmatism, 3% for myopia, 50% for myopic astigmatism, 18% for mixed astigmatism and 14% for emmetropia respectively.

  • PDF

The Study of Relationship Between Hyperopic Amblyopia, Anisometropic Power and Astigmatism (원시성약시와 굴절부등, 난시와의 관계 연구)

  • Park, Hyun-Ju
    • Journal of Korean Ophthalmic Optics Society
    • /
    • v.12 no.3
    • /
    • pp.137-142
    • /
    • 2007
  • The purpose of this study was to investigate sole effect of therapy of spectacles correction on the refractive amblyopia. Spectacles were prescribed to give the same effect as the occlusion therapy undercorrecting in the case of hyperopia, and effectiveness of the therapy was compared with occlusion therapy without additional prescription. The results can be summarized as follows: 1. The higher anisometropic power was the lower initial visual acuity was. 2. Anisometropic power did not influence final visual acuity. 3. The latter beginning time of therapy was the higher astigmatism was. 4. Therapy of spectacles correction on the hyperopic amblyopia was quite effective.

  • PDF

A Study of Abnormal Refraction Eye on Female Old Age (노인 여성의 굴절이상 눈에 대한 연구)

  • Kim, Douk-Hoon
    • Journal of Korean Ophthalmic Optics Society
    • /
    • v.5 no.1
    • /
    • pp.125-129
    • /
    • 2000
  • To fine understand the visual acuity of female old age. This study was researched the visual acuity test by the object and subject methods. The major findings was as follows: 1. The eye types were 80.94% positive for hyperopia. 13.86% for myopia and 5.19% for emmetropia respectively. 2. The anbormal refraction eye was positive for mixed astigmatism for 78.27%, myoptic com pound astigmatism (10.99%), simple presbyopia(4.97%), myopic simple astigmatism(2.88%), presbyopia compound astigmatism (1.57%), simple myopia(0.78%) and presbyopia simple astigmatism(0.52%). 3. The axis of astigmatism was 60.23% for against regular astigmatism. 22.73% for oblique astigmatism and 17.05% for regular astigmatism respectively. 4. On the total myopic spheric power, the -0.50 spheric equivalent ${\leq}-2.00$ was 90.2%, the -2.00${\leq}-6.00$ was 9.8%. 5. On the total presbyopic spheric power, the -0.50${\leq}-2.00$ was 80.252%, the -2.00${\leq}-6.00$ was 16.99% and 2.56% for anything over the 6.00 diopter. 6. On the astigmatic power, the $0.50{\geq}$ cylinder power${\geq}1.00$ was 69.35%,the 1.00> cylinder power ${\geq}2.00$ was 27.38%, and anything over the 2.00 cylinder diopter was 3.27%.

  • PDF

The Study on Trend of Domestic and Overseas Oriental Medical Research for Visual Impairment (시력장애에 관한 국내외 한의학적 임상 연구 경향 고찰)

  • Lee, Su-Kyung;Hong, Hyeon-Jin;Lee, Hyun-Bum;Lee, Chang-Won
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
    • /
    • v.31 no.3
    • /
    • pp.84-96
    • /
    • 2018
  • Objectives : This study is designed for trend analysis of oriental medicine treatment for visual impairment. Methods : Research studies related to objectives were gathered through OASIS, KTKP, PUBMED with keywords such as "visual impairment", "myopia", "hyperopia", "presbyopia", "astigmatism" and analyzed. Results : As a result of searching domestic and overseas research on oriental medical treatment for visual impairment, 7 domestic research papers and 11 overseas research papers have been selected. Among those research papers, 15 of those are studies related to childhood or juvenile myopia. Acupuncture, ear acupuncture, herb medicine, periocular massage, eye muscle exercise and habit correction are used as treatment methods for visual impairment. 14 out of 17 research papers which mentioned treatment effect of oriental medicine reported oriental treatment of visual impairment is effective. Conclusions : Various types of oriental medical treatment could be effective in treating visual impairment. Thus, related in-depth research must be proceeded.

Large Orbital Cavernous Hemangioma: A Case Report (안와에 발생한 거대 해면상 혈관종 증례보고)

  • Bae, Sang Mo;Jung, Jae Hak;Kim, Young Hwan;Sun, Hook
    • Archives of Plastic Surgery
    • /
    • v.33 no.3
    • /
    • pp.388-391
    • /
    • 2006
  • Hemangioma is one of the most common congenital tumors in the region of the face and neck. Although histologically benign, these facial masses are clinically malignant for their deforming and inexorable growth, especially in so-called 'cavernous hemangioma'. Carvenous hemangioma is the most common primary tumor occurring in the adult orbit. This tumor has symptoms that characteristically develop over several years with slowly progressive proptosis, eyeball deviation, hyperopia, diplopia and optic nerve compression. Today, hemangiomas are being treated by various methods; steroids, electrocoagulation, injection of sclerosing agent, cryotherapy, radiation therapy, laser therapy, and surgical treatment, etc. In principle, surgical approaches to the orbit must provide maximum safety and optimal visualization. We have experienced a case of large cavernous hemangioma in the orbit inferolaterally. The surgical treatment of tumor was achieved by the bicoronal approach combined with inferomedial and inferolateral orbitotomy. This surgical approach allows better visualization of the tumor and greater protection of essential anatomic structures. We obtained satisfactory results in terms of aesthetic and functional consideration. We present our case with a brief review of the literature related to orbital cavernous hemangioma.