Effect of corneal thickness between different degrees of refractive errors
DOI:
https://doi.org/10.71395/ijhp.2.1.2025.31-35Abstract
Background and Objectives: Eyes are the most important organ of human body which is responsible for the vision. enable individual to see, the ability to perceive image which provides information about vision, and enables many photo response functions that are not dependent on vision. The aim of this study is to compare the effect of central corneal thickness on myopic, hyperopic, astigmatic and emmetropes of different age groups. The study involves 60 subjects i.e myopia more than (<-8.0 D), hyperopia more than (< +4.0 D), and astigmatism more than (<-3 D).
METHODOLOGY: TThe central corneal thickness was measured with pachymeter and keratometer than all the data entered in Microsoft excel for statistical analysis. Study design will be descriptive cross sectional study design and use purposive sampling technique. Age group will be taken between 15 to 30 years. Exclusion criteria are keratoconus, mentally retared patients, nystagmus, corneal wrapage and wrinkling. Duration of study includes Oct 2020 to May 2021.This study is conducted in Madinah teaching Hospital and Allied Hospital FSD.
RESULTS: There was no significant difference between the myopic and hyperopic and emmetropic eyes of different age groups.
CONCLUSION: We assume that there is no correlation was found of central corneal thickness on different types of refractive error.
References
Ali, N.M., Hamied, F.M. and Farhood, Q.K., 2017.Corneal thickness in dry eyes in an Iraqi population. Clinical Ophthalmology (Auckland, NZ), 11, p.435.
Bradfield, Y.S., Kaminski, B.M., Repka, M.X., Melia, M. and Pediatric Eye Disease Investigator Group, 2012. Comparison of Tono-Pen and Gold mannapplanationtonometers for measurement of intraocular pressure in healthy children. Journal of American Association for Pediatric Ophthalmology and Strabismus, 16(3), pp.242-248.
Carney, L.G., Mainstone, J.C. and Henderson, B.A., 1997.Corneal topography and myopia.A cross-sectional study. Investigative ophthalmology & visual science, 38(2), pp.311-320
Chang, P.Y., Chang, S.W. and Wang, J.Y., 2010.Assessment of corneal biomechanical prop erties and intraocular pressure with the Ocular Response Analyzer in childhood myopia. British Journal of Ophthalmology, 94(7), pp.877-881.
Chen, M.J., Liu, Y.T., Tsai, C.C., Chen, Y.C., Chou, C.K. and Lee, S.M., 2009. Relationship between central corneal thickness, refractive error, corneal curvature, anterior chamber depth and axial length. Journal of the Chinese Medical Asso ciation, 72(3), pp.133-137.
Cheng, A.C., Fan, D., Tang, E. and Lam, D.S., 2006. Effect of corneal curvature and corneal thickness on the assessment of intraocular pres sure using noncontact tonometry in patients after myopic LASIK surgery. Cornea, 25(1), pp.26-28.
Doughty, M.J., Laiquzzaman, M., Müller, A., Oblak, E. and Button, N.F., 2002.Central corneal thickness in European (white) individuals, espe cially children and the elderly, and assessment of its possible importance in clinical measures of intra‐ocular pressure. Ophthalmic and Physiologi cal Optics, 22(6), pp.491-504.
Francis, B.A., Hsieh, A., Lai, M.Y., Chopra, V., Pena, F., Azen, S., Varma, R. and Los Angeles Latino Eye Study Group, 2007. Effects of corneal thickness, corneal curvature, and intraocular pres sure level on Goldmannapplanation tonometry and dynamic contour tonometry. Ophthalmology, 114(1), pp.20-26.
Franco, S. and Lira, M., 2009.Biomechanical properties of the cornea measured by the Ocular Response Analyzer and their association with intraocular pressure and the central corneal curva ture. Clinical and Experimental Optometry, 92(6), pp.469-475.
Jarade, E.F., Nader, F.C.A. and Tabbara, K.F., 2005.Intraocular pressure measurement after hyperopic and myopic LASIK. Kadhim, Y.J. and Farhood, Q.K., 2016. Central corneal thickness of Iraqi population in relation to age, gender, refractive errors, and corneal curva ture: a hospital-based cross-sectional study. Clini cal Ophthalmology (Auckland, NZ), 10, p.2369.
Kalikivayi, L., Ratheesan, K. and Kalikivayi, V., 2018.Comparison of central corneal thickness in myopes, hyperopes and emmetropes of different age groups. J ClinOphthalmol, 2(2), pp.96-100.
Kohnen, T., Strenger, A. and Klaproth, O.K., 2008. Basic knowledge of refractive surgery: correction of refractive errors using modern surgi cal procedures. DeutschesÄrzteblatt International, 105(9), p.163.
Kanski, J . J. and Bowling, B.,2016. Clinical ophthajlmoscopy a systematic approach. 8thed. London: Elsevier Saunders, 168. Khurana, A. K., 2014.Theory and Practice of Optics and Refraction. 2nd ed. London: Elsevier Saunders. Pp. 62-79. Liu, Z, and Pflugfelder, S. C., 1999. Corneal thick ness is reduced in dry eye. Cornea, 18(4), pp.403-407.
Pedersen, L., Hjortdal, J. and Ehlers, N., 2005. Central corneal thickness in high myopia. ActaOp hthalmologicaScandinavica, 83(5), pp.539-542.
Prasad, A., Fry, K. and Hersh, P.S., 2011.Relation ship of age and refraction to central corneal thick ness. Cornea, 30(5), pp.553-555.
Price Jr, F.W., Koller, D.L. and Price, M.O., 1999.Central corneal pachymetry in patients undergoing laser in situ keratomileusis. Ophthal mology, 106(11), pp.2216-2220.
Shakeel, K., Akram, S., Ullah, S., Qasim, M.S.A. and Arshad, A., 2018. Association of asthenopia, pre-presbyopia and refractive errors in workers involved in hand crafting. Pakistan Journal of Ophthalmology, 34(3).
Snell. Richard s. Snell and Michael a. Lamp., 2012. Clinical anatomy of the eye. 2nded. Pp. 119-128. Ventura, B.V., Moraes, H.V., Kara-Junior, N. and Santhiago, M.R., 2012.Role of optical coherence tomography on corneal surface laser ablation. Journal of ophthalmology, 2012.
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