| Summary: | Purpose: 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.
Methods: 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.
Results: 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 (P
<
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 (P
<
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 (P
<
0.001).
Conclusion: The contact lens–spectacle combination reversed Galilean telescope significantly improved the central 30° visual field of glaucoma patients with the restricted visual field.
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