Quality of life associated with unilateral and bilateral good vision☆
Section snippets
Patients and methods
Consecutive adult patients with ocular disease who sought treatment for ocular examination with a best-corrected visual acuity of 20/20–20/25 in either one eye or both eyes were asked if they would be willing to participate in a study concerning quality of life associated with visual acuity. For the group with good vision in one eye, the inclusion criterion of vision of 20/40 or less in the second eye was established. Exclusion criteria in the two-eye group included a normal ocular examination
Results
There were 85 patients in the group with good vision in one eye, but four were unable to answer the study questions, leaving a group of 81. Within this group of 81 patients, there were 48 women and 33 men. The mean age was 66 years (standard deviation [SD], 11 years; 95% confidence interval [CI], 64–68 years), and the median age was 67 years, with a range from 37 years to 89 years. The mean number of years of education was 13.8 (SD, 3.3 years; 95% CI, 13.1–14.5 years). Fifty-five of the 81
Discussion
The present study found that time tradeoff utility values were significantly higher in patients with ocular disease and good bilateral visual acuity (20/20–20/25 vision in each eye) than in those with unilateral good visual acuity (20/20–20/25 vision in one eye and visual loss to a level of 20/40 or worse in the second eye). Because utility values are believed to correlate with the quality of life associated with a health state,7, 8, 9, 10, 11 it is reasonable to conclude that patient
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2018, OphthalmologyCitation Excerpt :This suggests the mean vision utility of 0.94 should be used, instead of 0.97, as that associated with bilateral vision of 20/20 to 20/25. The mean vision utilities of 0.92 in 348 participants with 20/20 vision in the better-seeing eye and 0.88 in 238 participants with 20/25 in the better-seeing eye are the same as those reported in 82 people in 1999 by Brown et al.8 Confirmation herein of the same results in 586 participants, more than 7 times the number in the initial report,8 helps to validate the results in the earlier study. These time-tradeoff utilities previously were shown to be reliable,18,19 to have construct validity,20 and not to be influenced by common systemic comorbidities.14
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2017, Journal of Cataract and Refractive SurgeryCitation Excerpt :We adopted bilateral vision, which is weighted logMAR CDVA, in our study because good vision normally depends on both eyes. Patients with good unilateral vision report a lower quality of life than do patients with bilateral good vision.26 Hence, the bilateral visual parameter more objectively reflects the patient's vision status.
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Supported in part by the Retina Research and Development Fund, Philadelphia, Pennsylvania, and the Principal’s Initiative Research Fund, Kingston, Ontario, Canada.