Moniritilaki Mohammadreza, Badakhsh Maryam, Ehsaei Asieh, Daneshvar Ramin
Department of Optometry and Vision Science, University of Melbourne, Victoria, Australia.
Refractive Errors Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
J Ophthalmic Vis Res. 2020 Oct 25;15(4):502-508. doi: 10.18502/jovr.v15i4.7779. eCollection 2020 Oct-Dec.
Glaucoma causes irreversible visual field defects. This study aims to evaluate the effect of a reversed Galilean telescope on the visual field of patients with open-angle glaucoma.
Fifty-two glaucoma patients with a restricted visual field were recruited for this study. Central 30° visual field measurements were performed using a Humphrey visual field analyzer before and after applying the reversed Galilean telescope. To be more cosmetically acceptable, a combination of contact lens-spectacle was used as the reversed Galilean telescope.
Our data analysis showed that the reversed Galilean telescope had a significant effect on all measured perimetric indices. Visual field index (VFI) improved from a basic value of 44.38 26.96 to 49.30 29.83 percent by using the reversed telescope ( 0.001). Moreover, the mean deviation (MD) was significantly improved from the initial value of -19.91 7.19 dB to a value of -18.69 7.73 dB ( 0.001). However, our results showed a significant reduction in the pattern standard deviation (PSD) comparing before (9.83 2.82) and after (8.51 3.30) values using the reversed Galilean telescope ( 0.001).
The contact lens-spectacle combination reversed Galilean telescope significantly improved the central 30° visual field of glaucoma patients with the restricted visual field.
青光眼会导致不可逆的视野缺损。本研究旨在评估反向伽利略望远镜对开角型青光眼患者视野的影响。
本研究招募了52名视野受限的青光眼患者。在应用反向伽利略望远镜前后,使用汉弗莱视野分析仪进行中央30°视野测量。为了在外观上更易接受,将隐形眼镜 - 眼镜组合用作反向伽利略望远镜。
我们的数据分析表明,反向伽利略望远镜对所有测量的视野指标都有显著影响。使用反向望远镜后,视野指数(VFI)从基本值44.38±26.96提高到49.30±29.83%(P<0.001)。此外,平均偏差(MD)从初始值-19.91±7.19 dB显著提高到-18.69±7.73 dB(P<0.001)。然而,我们的结果显示,使用反向伽利略望远镜后,模式标准差(PSD)在使用前(9.83±2.82)和使用后(8.51±3.30)的值相比有显著降低(P<0.001)。
隐形眼镜 - 眼镜组合的反向伽利略望远镜显著改善了视野受限的青光眼患者的中央30°视野。