Browse > Article
http://dx.doi.org/10.14400/JDC.2014.12.12.485

Study on the Analysis of Corneal Variation by Refractive Error  

Lee, Hae-Jung (Dept. of Optometry, Yeoju Insititute of Technology)
Oh, Hyun-Jin (Dept. of Ophthalmic Optics, Baek Seok Culture University)
Jung, Mi-A (Dept. of Visual Optics, Baekseok University)
Publication Information
Journal of Digital Convergence / v.12, no.12, 2014 , pp. 485-490 More about this Journal
Abstract
The purpose of this Study investigated corneal power, corneal astigmatism and corneal axis according to spherical equivalent of refractive error. We measured spherical equivalent, corneal power and corneal astigmatism in 100 subjects from January 2014 to July 2014. Measured spherical equivalent of refractive error were $-3.01{\pm}3.79D$, corneal power of $43.79{\pm}1.60D$ and corneal astigmatism of $-1.17{\pm}0.79D$ respectively. Prevalence of spherical equivalent of refractive error were as follows : myopes (61%), emmetropes (22%), hyperopes(17%). Corneal astigmatism of refractive error greater than +0.75D was 63% and prevalence of corneal astigmatism were as follows : with-the-rlue astigmatism (84.13%), against-the-rule astigmatism(9.52%) respectively. Corneal power by spherical equivalent increased from hyperopia to myopia. Between spherical equivalent of refractive error and the mean corneal power was significant correlation(r=-0.25, p=0.01). A correlation were found between corneal power and spherical equivalent of refractive error in adults. They have the highest distribution of prevalence myopia among the refractive error. When the refractive error was increased, we found that corneal power was steeper. It is recognized that this can be refractive error factor and correct visual function is considered.
Keywords
Corneal Power; Corneal Astigmatism; Spherical Equivalent; Refractive Error; With-the-rule Astigmatism;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 L Wong, D Coggon, M Cruddas, CH Hwang, Education, reading and familial tendency as risk factors for myopia in Hong Kong fisherman, J. Epidemiol Community Health, Vol. 47, No. 1, pp. 50-53, 1993.   DOI   ScienceOn
2 N Shimiuzu, H Nomura, F Ando, N Niino, Y Miyake, H Shimokata, Refractive error and factors associated with myopia in an adult Japanese population, Jpn J. Ophthalmol., Vol. 47, No. 1, pp. 6-12, 2003.   DOI   ScienceOn
3 SY Wu, B Nemesure, MC Leske, Refractive errors in black adult population ; the Barbados Eye study, Invest Ophthalmol. Vis. Sci., Vol. 40, No. 10, pp. 2179-2184, 1999.
4 J Katz, JM Tielsch, A Sommer, Prevalence and risk factors for refractive errors in an adult inner city population, Invest Ophthalmol. Vis. Sci., Vol. 38, No. 2, pp. 334-340, 1997.
5 HJ Lee, CH Won, YY Song, KC Mah, Correlations between refractive error and corneal shape, Korean J. Vis. Sci., Vol.4, No. 1, pp. 11-18, 2002.
6 SD Kim, DS Lee, JD Kim, Study of the corneal refractive power and axial length of the adult korean eyeball, J. Korean Ophth. Soc., Vol. 31, No. 11, pp. 1365-1369, 1990.
7 K Hayahi, H Hayahi, F Hayahi, Topographic analysis of the changes in corneal shape due to aging, Cornea, Vol. 14, No. 5, pp. 527-532, 1995.
8 PM Kiely, G Smith, LG Carney, Meridional variations of corneal shape, Am. J. Optom. Physiol. Optics, Vol. 61, No. 19, pp. 619-626, 1984.   DOI
9 R Scott, T Grosvenor, Structural model for emmetropic and myopic eyes, Ophthal. Physiol. Opt., Vol. 13, No. 1, pp. 41-47, 1993.   DOI   ScienceOn
10 NA Mcbrien, DW Adams, A longitudinal investigation of adult onset and adult progression of myopia in an occupational group refractive and biometric findings, Invest. Ophthalmol. Vis. Sci., Vol. 38, No. 2, pp. 321-333, 1997.
11 J Jorge, JB Almeda, MA Parafita, Refractive biometric and topographic changes among Portuguese university science students; a 3-year longitudinal study, Ophthalmol. Physiol. Opt., Vol. 27, No. 3, pp. 287-294, 2007.   DOI   ScienceOn
12 CS Lam, E Goldschmidt, MH Edward, Prevalence of myopia in local and international schools in Hong Kong, Optom. Vis. Sci., Vol 81, No. 5, pp. 317-322, 2004.   DOI   ScienceOn
13 SM Saw, A synopsis of prevalence rates and environmental risk factors for myopia, Clin. Exp. Optom., Vol. 86, No. 5, pp. 289-294, 2003.   DOI   ScienceOn
14 R Dandona, L Dandona, Refractive error blindness, Bull World Health Organ, Vol. 79, No.3, pp. 237-243, 2001.
15 SM Saw, J Katz, OD Schein, SJ Chew, TK Chan, Epidemiology of myopia, Epidemiol. Rev., Vol. 18, No. 2, pp.175-187, 1996.   DOI   ScienceOn
16 DA Goss, P Erickson, Meridional corneal components of myopia progression in young adults and children, Am. J. Optom. Physiol. Opt., Vol. 64, No. 7, pp. 475-481, 1987.   DOI
17 JH Kim, HL Lee, KO Rhee, YD Kim, H Kim, Correlation between Refractive error and ocular parameters, Korean J. Vis. Sci., Vol. 16, No. 3, pp. 385-395, 2014.
18 WS Goh, CS Lam, Changes in refractive trends and optical components of Hong Kong Chines aged 19-39 years, Ophthalmic. Physiol. Opt., Vol. 14, No. 4, pp. 378-382, 1994.   DOI   ScienceOn
19 YY Chun, SJ Park, WJ Song, SJ Lee, A Stdy on Usefulness of Static Retinoscopy in Eyes Opened for Hyperopic School-aged Children, J. Korean Oph. Opt. Soc., Vol. 17, No. 13, pp. 293-298, 2012.
20 LL Lin, YF Shih, YC Lee, PT Hung, PK Hou, Changes in ocular refraction and its components among medical students ; a 5 year longitudinal study, Optom. Vis. Sci., Vol. 73, No. 7, pp. 495-498, 1996.   DOI   ScienceOn
21 CS Kim, MY Kim, HS Kim, YC Lee, Changes of corneal astigmatism with aging in koreans with normal visual acuity, J. Korean Ophth. Scc., Vol. 43, No. 10, pp. 1956-1962, 2002.
22 SJ Song, HJ Bae, MO Yun, JY Kim, Distribution and correlation of total astigmatism, corneal astigmatism, residual astigmatism with twenties and thirties, Korean J. Vis. Sci., Vol. 16, No. 1, pp. 39-45, 2012.
23 MH Erin, D Welma, E Candice, KG Tina, HM Dawn, MM Joseph, Prevalence of astigmatism in native american infants and children Optom. Vis. Sci., Vol. 87, No. 6, pp 400-405, 2010.
24 T Grosvenor, MC Flom, Prevalence of refractive anomalies, 1st ed. Boston, Butterworth-Heinemann, pp. 24-98, 1991.