Abstract
Purpose/Aim: We aimed to investigate the effect of monocular blur on the binocular visual field. Materials and Methods: A total of 13 healthy young volunteers participated in this study. The mean subjective refractive error of the dominant eye (DE) was -3.33 ± 1.65D, and the non-dominant eye (NDE) was -3.15 ± 2.84D. The DE was determined by using the hole-in-the-card test. The visual field was examined by the Humphrey Visual Field Analyzer using the 30-2 SITA Standard program. The visual field was measured while wearing soft contact lens under three conditions; ① both eyes: near vision correction; ② DE: near vision correction +3.00D added, NDE: near vision correction; and ③ DE: near vision correction, NDE: near vision correction +3.00D added. The foveal threshold, mean deviation (MD), and pattern standard deviation (PSD) values were investigated. Results: The foveal threshold value (dB) at ①, ②, and ③ was 41.2, 37.8, and 38.1, respectively. The values at ② and ③ were both significantly lower than that at ① (p < 0.0001; p = 0.0003). The MD value (dB) at ①, ②, and ③ was 1.67, 0.19, and 0.51, respectively; the values at ② and ③ were both significantly lower than that at ① (p = 0.0012; p = 0.0118). The PSD value (dB) at ①, ②, and ③ was 1.36, 1.55, and 1.47, respectively. A significant difference in ①, ②, and ③ was not found. Conclusion: These results suggest that monocular blur reduced the sensitivity within the binocular visual field.
Highlights
Visual field is measured under monocular view in clinics
Purpose/Aim: We aimed to investigate the effect of monocular blur on the binocular visual field
No significant differences were found between dominant eye (DE) blur and non-dominant eye (NDE) blur conditions in the foveal threshold and mean deviation (MD) values
Summary
Visual field is measured under monocular view in clinics. Visual information is managed with both eyes open. To consider the vision quality for a patient’s daily life, evaluating the visual field under binocular open view is important. In cases of monocular visual field abnormality, visual field abnormality is complemented by the normal visual field of the fellow eye under binocular open view condition. Awareness of the visual disturbance is difficult for the patient. Many patients with monocular cataract complain under binocular open view condition. There are fewer studies on the effect of monocular blur on the binocular visual field result
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