Quality of life in patients with tunnel vision and its influencing factors：a cross- sectional study

Abstract

Abstract Background: Tunnel vision can reduce a patient’s QoL. Little research has targeted patients with tunnel vision and deeply studied the influencing factors of QOL and the effect of visual field (VF) defect degree on QOL. The aim of this study was to investigate the clinical characteristics and quality of life (QoL) of patients with tunnel vision and summarize the influencing factors.Methods: Fifty-two patients with tunnel vision and 35 controls (normal VF; BCVA>16/20) were enrolled. Relevant clinical data and Low Vision Quality-of-Life Questionnaire (LVQoL) scores were recorded and analyzed. Products: The LVQoL scores were 62.63±21.34 in tunnel vision group and 112.42±11.90 in controls (P<.001). Multiple linear regression analysis revealed a negative correlation (R2=0.52) between patient LVQoL scores and presenting visual acuity (PVA)(logMAR) and a positive correlation with VF diameter. “Distant vision, mobility, and lighting” and “activities of daily living” subscale scores were associated with PVA and VF diameter (R2=0.50 and 0.39), “adjustment” score was correlated with age (R2=0.08), and “reading and fine work” was correlated with PVA (R2=0.40). LVQoL scores indicated mild impairment in the ≥20° groups and moderate-to-severe impairment in the <20°group. “Distant vision, mobility, and lighting” scores indicated mild impairment in the ≥30° group, and moderate-to-severe impairment in the <30° groups. In this subscale, the scores for "seeing steps or curbs" of all 3 tunnel vision groups indicated moderate-to-severe impairment. “Activities of daily living” score indicated mild impairment in the ≥20° groups and moderate-to-severe impairment in the <20°group. Conclusion: PVA and VF diameter influenced QoL in tunnel vision patients. VF diameters <30° significantly impaired outdoor activities, and “seeing steps” was the first to be affected. VF diameters <20° significantly restricted indoor activities. Patients with no significant PVA impairment showed few VF effects on near work. Identification of the impacts of tunnel vision can be used to clarify the development and direction of tunnel vision rehabilitation.Trial registration number: ChiCTR2000028859; Date of registration: 2020/1/5