RESUMO
PURPOSE: To determine visual field findings in Boston type 1-KPro (BI-KPro) patients without glaucoma. Characterize normal threshold values and global indices using standard automated perimetry and characterize visual field amplitude using Goldmann's manual perimetry. METHODS: This cross-sectional prospective noninterventional study included patients (n=6 patients, 6 eyes) with BI-KPro who had normal optical coherence tomography and fundoscopic evaluation of the optic disc and retina. None had a previous history of glaucoma. Visual acuity, reliable and reproducible standard automated perimetry (24-2 and 30-2), and manual perimetry examinations were obtained from all patients. Each patient answered the National Eye Institute Visual Function Questionnaire, and the results were correlated with visual field indices. RESULTS: The mean visual acuity was 0.35±0.31 logMAR (0.84 to 0.10). All visual fields had good reliability indices. The standard automated perimetry mean deviation values were -7.25±3.63 decibels (dB) and -7.75±3.23 (24-2 and 30-2 values, respectively), whereas pattern SD values were 2.72±0.82 and 3.30±1.13 (24-2 and 30-2, respectively). The manual visual field mean values of the 4 quadrants (superior, temporal, inferior, and nasal), were 39.7±4.5, 61.8±6.2, 54.0±4.3, and 48.2±7.6 degrees, respectively. The authors found a significant correlation between the VFQ-25 indexes of general sight and close-range activities with the values of total deviation at 10 degrees. VFQ-25 peripheral vision indexes also correlated significantly with values of total deviation at 30 degrees (outermost locations in the 30-degree area). CONCLUSIONS: Patients with BI-KPro presented reliable and reproductive visual field measurements. The authors found a consistent reduction in visual field extension and a global sensitivity reduction in these patients. Despite visual field changes, our patients had a good quality of life scores. Overall, these results could be useful to improve early glaucoma diagnosis and to follow-up BI-KPro patients.
