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Akomodasyon Amplitüdü ve Ön Segment Parametrelerinde Ramazan Orucu Sırasındaki Diürnal Değişimler

Year 2021, Volume: 18 Issue: 1, 64 - 68, 28.04.2021
https://doi.org/10.35440/hutfd.857380

Abstract


Amaç: Çalışmamızda görsel olarak sağlıklı olgularda Ramazan orucunun akomodasyon amplitüdü ve ön segment parametreleri üzerine olan diürnal etkisini değerlendirmeyi amaçladık.
Materyal ve Metod: Subjektif akomodasyon amplitüdü, "eksi lens" tekniği kullanılarak ölçüldü. Korneal kırıcılık (K1, K2 ve Kmax), santral kornea kalınlığı, kornea hacmi, ön kamara hacmi ve ön kamara derinlik parametreleri ise Scheimpflug kamera sistemi kullanılarak değerlendirildi. Gönüllülerin değerlendirmeleri Ramazan ayı içerisinde oruçlu iken sabah saat 08:00 ve öğleden sonra saat 16:00 olmak üzere iki kere yapıldı. Veriler eşleştirilmiş örneklem t testi ile analiz edildi.
Bulgular: Yirmi sekizi kadın, 40’ı erkek olan olguların yaş ortalaması 34.38±4.93 (26-42) idi. Oruç sırasında saat 08.00 ve 16.00 ölçümlerini karşılaştırdığımızda, saat 16:00’da K1 (08:00: 42.81 ± 1.51 dioptri ve 16.00: 42.85±1.50 dioptri, P= 0.016) ve Kmax (08.00: 44.29±1.73 dioptri ve 16.00: 44.38±1.78 dioptri, P = 0.020) değerlerinin anlamlı şekilde daha dik olduğunu gözlemledik. Saat 08.00 ve 16.00 ölçümleri karşılaştırıldığında akomodasyon amplitüdünün (08:00: 7.39±1.40 dioptri ve 16:00: 7.37±1.40 dioptri, P= 0.783) santral kornea kalınlığının (08:00: 535.60±30.43 µm ve 16.00: 535.25 ± 30.66 µm, P= 0.694), kornea hacminin (08.00: 59.72±3.85 mm3 ve 16.00: 59.60±3.98 mm3, P = 0.344), ön kamara hacminin (08.00: 170.91±30.77 mm3 ve 16.00: 171.22±32.61 mm3, P= 0.808) ve ön kamara derinliğinin (08.00: 2.91±0.28 mm ve 16.00: 2.92±0.29 mm, P= 0.053) diürnal değişikliklerinde anlamlı farklılık olmadığı saptandı.
Sonuç: Sonuçlarımız oruca bağlı dehidratasyonun gözün korneal kırıcılık gibi bazı ön segment parametrelerini etkilediğini göstermekle birlikte akomodasyon amplitüdü, kornea pakimetresi ve ön kamara anatomisinin diürnal değişimlerini etkilemediğini ortaya koymaktadır.

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References

  • 1. Leiper JB, Molla AM, Molla AM. Effects on health of fluid restriction during fasting in Ramadan. Eur J Clin Nutr. 2003;57 Suppl 2:S30–S38.
  • 2. Javadi MA, Assadi M, Einollahi B, Rabei HM, Afarid M, Assadi M. The effects of Ramadan fasting on the health and function of the eye. J Res Med Sci. 2014;19(8):786−791.
  • 3. Azizi F. Islamic fasting and health. Ann Nutr Metab. 2010;56(4):273–282.
  • 4. Kayikçioğlu O, Erkin EF, Erakgün T. The influence of religious fasting on basal tear secretion and tear break-up time. Int Ophthalmol. 1998;22(2):67–69.
  • 5. Kerimoglu H, Ozturk B, Gunduz K, Bozkurt B, Kamis U, Okka M. Effect of altered eating habits and periods during Ramadan fasting on intraocular pressure, tear secretion, corneal and anterior chamber parameters. Eye (Lond). 2010;24(1):97−100.
  • 6. Koktekir BE, Bozkurt B, Gonul S, Gedik S, Okudan S. Effect of religious fasting on tear osmolarity and ocular surface. Eye Contact Lens. 2014;40(4):239−242.
  • 7. Baser G, Cengiz H, Uyar M, Seker Un E. Diurnal Alterations of Refraction, Anterior Segment Biometrics, and Intraocular Pressure in Long-Time Dehydration due to Religious Fasting. Semin Ophthalmol. 2016;31(5):499−504.
  • 8. Nickla DL. Ocular diurnal rhythms and eye growth regulation: where we are 50 years after Lauber. Exp Eye Res. 2013;114:25–34.
  • 9. Chakraborty R, Read SA, Collins MJ. Diurnal variations in axial length, choroidal thickness, intraocular pressure, and ocular biometrics. Invest Ophthalmol Vis Sci. 2011;52(8):5121–5129.
  • 10. Küçük B, Hamamcı M, Aslan Bayhan S, Bayhan HA, Inan LE. Amplitude of Accommodation in Patients with Multiple Sclerosis. Curr Eye Res. 2019;44(11):1271−1277.
  • 11. Hoseini Yazdi SH, Jafarzadehpur E, Mirzajani A, Nematy M. Comparison of amplitude of accommodation, near point of convergence and fusion ability of islamic fasters before, during and after respected month of ramadan. Iran Red Crescent Med J. 2011;13(10):746−748.
  • 12. Rabbanikhah Z, Javadi MA, Karimian F, Rouhani MR, Zamani M, Banaee T, et al. Effect of Religious Fasting on Basal Tear Secretion, Tear Break up Time and Intraocular Pressure. Bina J Ophthalmol. 2007;12(4):485−491.
  • 13. Tutt R, Bradley A, Begley C, Thibos LN. Optical and visual impact of tear break-up in human eyes. Invest Ophthalmol Vis Sci. 2000;41(13):4117−4123.
  • 14. Park SM, Moon BY, Kim SY, Yu DS. Diurnal variations of amplitude of accommodation in different age groups. PLoS One. 2019;14(11):e0225754.
  • 15. Kwitko S, Gritz DC, Garbus JJ, Gauderman WJ, McDonnell PJ. Diurnal variation of corneal topography after radial keratotomy. Arch Ophthalmol. 1992;110:351−356.
  • 16. Sarici AM, Yuksel Elgin C, Dikkaya F. Effect of Fasting on Corneal Biomechanical and Structural Parameters. Curr Eye Res. 2016;41:908−912.
  • 17. Uyar E, Doğan Ü, Ulaş F, Çelebi S. Orucun Gözün Biyometrik Parametreleri Üzerine Olan Etkilerinin Düşük Koheranslı Optik Biyometri ile Değerlendirilmesi. MN Oftalmoloji. 2018;25(2):76−80.
  • 18. Selver OB, Palamar M, Gerceker K, Egrilmez S, Yagci A. The Effects of Ramadan Fasting on Anterior Segment Parameters, Visual Acuity and Intraocular Pressures of the Eye. Open Ophthalmol J. 2017;11:152−155.
  • 19. Küçük B, Sırakaya E. Minus Lens Tekniği ve Otorefraktometre ile Ölçülen Subjektif ve Objektif Akomodasyon Amplitüdü Değerlerinin Karşılaştırılması. MN Oftalmoloji. 2020;27(1):16−21.

Diurnal Changes in Accommodation Amplitude and Anterior Segment Parameters During Ramadan Fasting

Year 2021, Volume: 18 Issue: 1, 64 - 68, 28.04.2021
https://doi.org/10.35440/hutfd.857380

Abstract


Background: The purpose of this research was to investigate the diurnal effect of Ramadan fasting on the amplitude of accommodation and anterior segment parameters in visually healthy participants.
Materials and Methods: The study included 68 healthy individuals, aged 26–42 years. The subjective accommodation amplitude was measured using the "minus lens" technique. Corneal refraction (K1, K2, and Kmax), central corneal thickness, corneal volume, anterior chamber volume, and anterior chamber depth parameters were evaluated using the Scheimpflug camera system. Participants were evaluated twice, at 08:00 and 16:00, while fasting during Ramadan. Data were analyzed by paired sample t-test.
Results: The mean age of the participants, of which 28 were women and 40 were men, was 34.38±4.93 (range: 26–42). Comparison of measurements taken at 08:00 and 16:00 during fasting showed that at 16:00, the K1 values (08:00: 42.81±1.51 diopter and 16:00: 42.85±1.50 diopter, P = 0.016) and Kmax values (08:00: 44.29 ± 1.73 diopter and 16:00: 44.38±1.78 diopter, P = 0.020) were significantly steeper. When data collected at 08.00 and 16.00 were compared, there were no significant differences in diurnal changes: amplitude of accommodation (08:00: 7.39±1.40 diopter and 16:00: 7.37±1.40 diopter, P = 0.783), central corneal thickness (08:00: 535.60 ± 30.43 µm and 16:00: 535.25±30.66 µm, P = 0.694), corneal volume (08:00: 59.72±3.85 mm3 and 16:00: 59.60±3.98 mm3, P= 0.344), anterior chamber volume (08.00: 170.91±30.77 mm3 and 16.00: 171.22±32.61 mm3, P = 0.808) and anterior chamber depth (08:00: 2.91 ± 0.28 mm and 16:00: 2.92 ± 0.29 mm, P = 0.053).
Conclusions: The results showed that dehydration due to fasting affects some anterior segment parameters, such as corneal refraction; however, it does not affect the diurnal changes of amplitude of accommodation, corneal pachymetry, or anterior chamber anatomy.

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References

  • 1. Leiper JB, Molla AM, Molla AM. Effects on health of fluid restriction during fasting in Ramadan. Eur J Clin Nutr. 2003;57 Suppl 2:S30–S38.
  • 2. Javadi MA, Assadi M, Einollahi B, Rabei HM, Afarid M, Assadi M. The effects of Ramadan fasting on the health and function of the eye. J Res Med Sci. 2014;19(8):786−791.
  • 3. Azizi F. Islamic fasting and health. Ann Nutr Metab. 2010;56(4):273–282.
  • 4. Kayikçioğlu O, Erkin EF, Erakgün T. The influence of religious fasting on basal tear secretion and tear break-up time. Int Ophthalmol. 1998;22(2):67–69.
  • 5. Kerimoglu H, Ozturk B, Gunduz K, Bozkurt B, Kamis U, Okka M. Effect of altered eating habits and periods during Ramadan fasting on intraocular pressure, tear secretion, corneal and anterior chamber parameters. Eye (Lond). 2010;24(1):97−100.
  • 6. Koktekir BE, Bozkurt B, Gonul S, Gedik S, Okudan S. Effect of religious fasting on tear osmolarity and ocular surface. Eye Contact Lens. 2014;40(4):239−242.
  • 7. Baser G, Cengiz H, Uyar M, Seker Un E. Diurnal Alterations of Refraction, Anterior Segment Biometrics, and Intraocular Pressure in Long-Time Dehydration due to Religious Fasting. Semin Ophthalmol. 2016;31(5):499−504.
  • 8. Nickla DL. Ocular diurnal rhythms and eye growth regulation: where we are 50 years after Lauber. Exp Eye Res. 2013;114:25–34.
  • 9. Chakraborty R, Read SA, Collins MJ. Diurnal variations in axial length, choroidal thickness, intraocular pressure, and ocular biometrics. Invest Ophthalmol Vis Sci. 2011;52(8):5121–5129.
  • 10. Küçük B, Hamamcı M, Aslan Bayhan S, Bayhan HA, Inan LE. Amplitude of Accommodation in Patients with Multiple Sclerosis. Curr Eye Res. 2019;44(11):1271−1277.
  • 11. Hoseini Yazdi SH, Jafarzadehpur E, Mirzajani A, Nematy M. Comparison of amplitude of accommodation, near point of convergence and fusion ability of islamic fasters before, during and after respected month of ramadan. Iran Red Crescent Med J. 2011;13(10):746−748.
  • 12. Rabbanikhah Z, Javadi MA, Karimian F, Rouhani MR, Zamani M, Banaee T, et al. Effect of Religious Fasting on Basal Tear Secretion, Tear Break up Time and Intraocular Pressure. Bina J Ophthalmol. 2007;12(4):485−491.
  • 13. Tutt R, Bradley A, Begley C, Thibos LN. Optical and visual impact of tear break-up in human eyes. Invest Ophthalmol Vis Sci. 2000;41(13):4117−4123.
  • 14. Park SM, Moon BY, Kim SY, Yu DS. Diurnal variations of amplitude of accommodation in different age groups. PLoS One. 2019;14(11):e0225754.
  • 15. Kwitko S, Gritz DC, Garbus JJ, Gauderman WJ, McDonnell PJ. Diurnal variation of corneal topography after radial keratotomy. Arch Ophthalmol. 1992;110:351−356.
  • 16. Sarici AM, Yuksel Elgin C, Dikkaya F. Effect of Fasting on Corneal Biomechanical and Structural Parameters. Curr Eye Res. 2016;41:908−912.
  • 17. Uyar E, Doğan Ü, Ulaş F, Çelebi S. Orucun Gözün Biyometrik Parametreleri Üzerine Olan Etkilerinin Düşük Koheranslı Optik Biyometri ile Değerlendirilmesi. MN Oftalmoloji. 2018;25(2):76−80.
  • 18. Selver OB, Palamar M, Gerceker K, Egrilmez S, Yagci A. The Effects of Ramadan Fasting on Anterior Segment Parameters, Visual Acuity and Intraocular Pressures of the Eye. Open Ophthalmol J. 2017;11:152−155.
  • 19. Küçük B, Sırakaya E. Minus Lens Tekniği ve Otorefraktometre ile Ölçülen Subjektif ve Objektif Akomodasyon Amplitüdü Değerlerinin Karşılaştırılması. MN Oftalmoloji. 2020;27(1):16−21.
There are 19 citations in total.

Details

Primary Language English
Subjects Clinical Sciences
Journal Section Research Article
Authors

Atılım Armağan Demirtaş 0000-0002-6504-8385

Mine Karahan 0000-0002-3591-721X

Seyfettin Erdem This is me 0000-0001-5742-1293

Project Number Mevut değildir
Publication Date April 28, 2021
Submission Date January 10, 2021
Acceptance Date March 4, 2021
Published in Issue Year 2021 Volume: 18 Issue: 1

Cite

Vancouver Demirtaş AA, Karahan M, Erdem S. Diurnal Changes in Accommodation Amplitude and Anterior Segment Parameters During Ramadan Fasting. Harran Üniversitesi Tıp Fakültesi Dergisi. 2021;18(1):64-8.

Harran Üniversitesi Tıp Fakültesi Dergisi  / Journal of Harran University Medical Faculty