Prevalence of Pinguecula and Its Possible Risk Factors among Students of Rehabilitation School of Iran University of Medical Sciences in 2016-2017

Document Type : Original article

Authors

1 Master Student of Optometry, Department of Optometry, School of Rehabilitation Sciences, Iran University of Medical Sciences. Tehran. Iran

2 PhD of Health Education, Department of Basic Sciences in Rehabilitation, School of Rehabilitation Sciences, Iran University of Medical Sciences. Tehran. Iran

3 PhD Candidate in Optometry and Vision Science, School of Rehabilitation Sciences, Iran University of Medical Sciences. Tehran. Iran

4 MSc of Optometry, School of Rehabilitation Sciences, Iran University of Medical Sciences. Tehran. Iran

Abstract

Background and Aim: Pinguecula is a common type of conjunctival degeneration. The purpose of the present study was to investigate the prevalence of pinguecula and its determinants in a student population in Iran.
Materials and Methods: A cross-sectional study was carried out on 850 students at the School of Rehabilitation, Iran University of Medical Sciences, with an average age of 22.06±3.99. After taking the history and life style characteristics, including: duration of outdoor activity, sleep time and computer working time, a standard OSDI questionnaire was completed by each student, and then presence of pinguecula was diagnosed in all students using slit lamp examination.
Results: The total prevalence of pinguecula was 46.91; (57.14 in men and 31.42 in women) and the prevalence of this disease was significantly higher in men than in women (P=<001). There was a significant relationship between the duration of outdoor activity (P=0.017) and computer working time (P=0.001) with pinguecula prevalence. No significant association was found between the prevalence of pinguecula and OSDI questionnaire score, sleep time, and age (all values of P> 0.05).
Conclusion: According to the results, the prevalence of pinguecula was high in the present study, and therefore, comprehensive optometric examinations are recommended for the diagnosis of pinguecula and the subsequent required actions in students. Given the relationship between pinguecula and outdoor activities and computer-time, it is necessary to provide the students with the necessary information about this issue to reduce the incidence of this disease. 

Keywords

Main Subjects


1.   Bell A. Pinguecula. J Vis Commun Med. 2006;  29(2): 82-3.##
2.   Taylor HR, et al. Corneal changes associated with chronic UV irradiation. Arch Ophthalmol. 1989; 107(10): 1481-4. ##
3.   Austin P, Jakobiec FA, and Iwamoto T. Elastodysplasia and elastodystrophy as the pathologic bases of ocular pterygia and pinguecula. Ophthalmology. 1983;90(1): 96-109. ##
4.   Frucht-Pery J, et al. Treatment of inflamed pterygium and pinguecula with topical indomethacin 0.1% solution. Cornea. 1997;16(1): 42-7. ##
5.   Hashemi H, et al. The prevalence and determinants of pterygium in rural areas. J Curr Ophthalmol. 2017; 29(3): 194-198. ##
6.   DetelsR, Dhir SP. Pterygium: a geographical study. Arch Ophthalmol.1967;78(4): 485-91. ##
7.   Nakaishi H, Yamamoto M, Ishida M, et al. Pingueculae and pterygia   in   motorcycle   policemen. Ind Health .1997 ;35: 325–329. ##
8.   Pakdel F, et al. Validation of Farsi Translation of the Ocular Surface Disease Index. J Ophthalmic Vis Res. 2017; 12(3): 301-304. ##
9.   Panchapakesan J, Hourihan F, Mitchell P.Prevalence of pterygium and pinguecula: the Blue Mountains Eye Study. Aust N Z J Ophthalmol.1998; 26 Suppl 1: S2-5. ##
10. Norn  M.S. Prevalence of pinguecula in Greenland and in Copenhagen, and its relation to pterygium and spheroid degeneration. Acta Ophthalmol (Copenh). 1979; 57(1): 96-105. ##
11. Viso E, Gude F, Rodriguez-Ares MT. Prevalence of pinguecula and pterygium in a general population in Spain. Eye (Lond). 2011; 25(3): 350-7. ##
12. Rezvan F, et al.The prevalence and determinants of pterygium and pinguecula in an urban population in Shahroud, Iran. Acta Med Iran. 2012; 50(10): 689-96. ##
13. Fotouhi A, et al. Prevalence and risk factors of pterygium and pinguecula: the Tehran Eye Study. Eye (Lond).2009. 23(5): 1125-9. ##
14. Norn MS. Spheroid degeneration, pinguecula, and pterygium among Arabs in the Red Sea territory, Jordan. Acta Ophthalmol (Copenh). 1982; 60(6): 949-54. ##
15. Le, Q., et al., Prevalence and associated factors of pinguecula in a rural population in Shanghai, Eastern China. Ophthalmic Epidemiol, 2015; 22(2): 130-8. ##
16. Asokan R, et al. Prevalence and associated factors for pterygium and pinguecula in a South Indian population. Ophthalmic Physiol Opt,. 2012; 32(1): 39-44. ##
Volume 8, Issue 2
July 2019
Pages 177-181
  • Receive Date: 11 September 2018
  • Revise Date: 25 November 2018
  • Accept Date: 14 January 2019
  • First Publish Date: 22 June 2019