Changes of intraocular pressure in different trimesters of pregnancy among Syrian refugees in Turkey: A cross-sectional study

Tolunay, Harun Egemen; Özcan, Sait Coşkun; Şükür, Yavuz Emre; Özcan, Deniz Özarslan; Adibelli, Fatih Mehmet; Hilali, Neşe Gül

doi:10.4274/tjod.40221

Cited by 14 publications

(15 citation statements)

References 14 publications

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“…Other authors, such as Sen [10] and Goldich [9], applied in their studies a Reichert Ocular Response Analyzer (ORA), considering biomechanical properties of the cornea. Despite the fact that values of IOP measurements obtained with the use of this method (IOPg, IOPcc) are higher in terms of absolute value than in case of Goldmann tonometry, the results of both studies confirm the tendency described by Tolunay [19] and Efe [8].…”

Section: Intraocular Pressuresupporting

confidence: 73%

“…Tolunay et al [19] investigated a group of 235 women divided into 4 groups: the I, the II, the III trimester and the postpartum period. Using Goldmann tonometer, they demonstrated that IOP value in the II and III trimesters of pregnancy is significantly lower than in the I trimester and during the postpartum period (p = 0.006, p < 0.001 and p = 0.001 respectively).…”

Section: Intraocular Pressurementioning

confidence: 99%

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Changes in the parameters of the anterior segment of the eye in pregnant women — literature review

et al. 2018

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The physiology of pregnancy is a curious issue for specialists from different branches of medicine and science. In this systematic review, the attention was focused on changes in eyes during pregnancy and confinement. To summarise and systematize actual knowledge in eyes' changes during pregnancy, publications from years 2011-2017 were analysed. Stud-ies about parameters of corneal endothelial cells, corneal biomechanical parameters, keratometric variables, intraocular pressure and biometry of the anterior chamber were compared. The conducted studies demonstrated the unambiguous character of changes only in case of intraocular pressure, which decreased during the II and III trimesters of pregnancy. Inconsistent study methods and low number of examined patients did not enable to draw explicit conclusions in context of other parameters of the anterior segment of the eye in pregnant women. It is indicated to perform further studies on a representative and homogeneous group of female patients.

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Section: Intraocular Pressuresupporting

confidence: 73%

Section: Intraocular Pressurementioning

confidence: 99%

Changes in the parameters of the anterior segment of the eye in pregnant women — literature review

et al. 2018

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“…4–7 Increase in CCT and decrease trend in IOP are known to occur along the pregnancy period, especially in the second and third trimesters when compared to the non-pregnant and the post-partum period. 8,9…”

Section: Introductionmentioning

confidence: 99%

Changes in corneal biomechanics during pregnancy in Chinese healthy female

Yang

et al. 2020

European Journal of Ophthalmology

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Purpose: To evaluate the changes of corneal biomechanics and the intraocular pressure during pregnancy in a Chinese healthy female population. Methods: A total of 222 unrelated Chinese females were recruited: 52 non-pregnant, 15 pregnant in the first trimester, 68 pregnant in the second trimester, and 87 pregnant in the third trimester. The intraocular pressure and corneal biomechanical parameters, including corneal-compensated intraocular pressure, Goldmann-correlated intraocular pressure, corneal hysteresis, and corneal resistance factor, were measured by an Ocular Response Analyzer G3. Central corneal thickness was measured by Lenstar (LS900). Results: Corneal hysteresis and corneal resistance factor were significantly higher in pregnant women at the second and third trimesters. Corneal-compensated intraocular pressure was lower in women at the third trimester of pregnancy ( p = 0.023), but the difference became insignificant after adjustment for corneal hysteresis. Central corneal thickness was marginally higher in pregnant women than non-pregnant women ( p = 0.032). There was a negative correlation between corneal-compensated intraocular pressure and corneal hysteresis ( r = −0.337, p < 0.001) and a positive correlation between central corneal thickness and corneal hysteresis ( r = 0.711, p < 0.0001). After adjustment for corneal-compensated intraocular pressure, corneal hysteresis remained significantly higher in the second and third trimesters of pregnant women than non-pregnant women ( p = 0.031, p = 0.005). Conclusion: This study revealed a significant increase in corneal hysteresis and corneal resistance factor in the second and third trimesters. The increase of corneal hysteresis was independent of corneal-compensated intraocular pressure, indicating pregnant females have unique characteristics in corneal-compensated intraocular pressure and corneal biomechanical properties that may be related to glaucoma and corneal ectatic diseases in pregnancy.

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“…Results of recent studies on the influence of pregnancy and childbirth on the anterior segment of the eye showed changes, such as the increase in central corneal thickness, temporary change in spherical refraction, increase of depth of anterior chamber [11,12], and resulting indirect drop in intraocular pressure [13][14][15][16]. Mentioned changes are interpreted as hormonally related, which is supported by in vitro studies.…”

Section: Introductionmentioning

confidence: 68%

Does pregnancy influence eye parameters? Assessment of choroidal thickness using EDI-OCT before and after labour depending on the way of delivery method

et al. 2020

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Objectives:The aim of this study is to assess the choroidal thickness (CT) with use of EDI-OCT in patients before and after delivery depending on the mode of delivery. Material and methods:The study involved 146 eyes of 73 patients aged 20-34 years, after natural labour (66 eyes) and C-section (80 eyes). Main inclusion criteria: Informed consent to participate in the study, age 18-35 years, single pregnancy, spherical refraction error -4.00 to +4.00 D, no eye pathologies, no surgery and ophthalmic procedures-including refractive surgery, childbirth after 36 weeks of pregnancy, BCVA = 1.0. Patients were examined twice: in 36 WG and on 6 th week after the birth. All examinations were carried out between 8:00 am and 10:00 am in order to avoid daily cycle fluctuations. CT measurements were made manually by two independent researchers at: subfoveal and 500 µm, 1000 µm, 1500 µm, 3000 µm temporally and nasally. The student's t-test was made.results: In C-section group CT differences before and after delivery were statistically significant in 7/9 of the analysed areas. Mean subfoveal choroidal thickness was 370.86 μm vs 388.71 μm in 36 WG and in 6 th week postpartum respectively (p = 0.0003). In women after natural labour, differences were statistically significant in 3/9 of the analysed areas. Mean subfoveal choroidal thickness was 303.27 μm vs 308,34 μm in 36 WG and in 6 th week postpartum respectively (p = 0.4800). Conclusions:The thickness of the choroid was lower in women in 36 WG in comparison to 6 th week after birth. Changes in the thickness of the choroid are particularly noticeable in women after caesarean section.

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Changes of intraocular pressure in different trimesters of pregnancy among Syrian refugees in Turkey: A cross-sectional study

Cited by 14 publications

References 14 publications

Changes in the parameters of the anterior segment of the eye in pregnant women — literature review

Changes in the parameters of the anterior segment of the eye in pregnant women — literature review

Changes in corneal biomechanics during pregnancy in Chinese healthy female

Does pregnancy influence eye parameters? Assessment of choroidal thickness using EDI-OCT before and after labour depending on the way of delivery method

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