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  • Title: Preferential hyperacuity perimeter in best vitelliform macular dystrophy.
    Author: Querques G, Atmani K, Bouzitou-Mfoumou R, Leveziel N, Massamba N, Souied EH.
    Journal: Retina; 2011 May; 31(5):959-66. PubMed ID: 21242858.
    Abstract:
    PURPOSE: To determine the visual field patterns obtained by the preferential hyperacuity perimetry (PHP) in patients with Best vitelliform macular dystrophy with mutations in the BEST1 gene. METHODS: Consecutive patients with Best vitelliform macular dystrophy underwent a complete ophthalmologic examination, including functional assessment by best-corrected visual acuity and Foresee PHP and morphologic assessment by fundus biomicroscopy, fundus autofluorescence, and spectral-domain optical coherence tomography. The functional "PHP visual field defect index" (which is the max peak value of the metamorphopsia [maximal distortion value at the visual field] + the max peak value of the scotoma [maximal scotoma value at the visual field]) and best-corrected visual acuity were analyzed about the disease stage. RESULTS: Thirty eyes of 15 consecutive patients (8 men and 7 women; mean age 39 ± 24 years) were included for analysis. Based on fundus biomicroscopy, fundus autofluorescence, and spectral-domain optical coherence tomography, the macular lesions could be counted as follows: previtelliform lesions in 5 eyes of 3 patients (Stage 1), vitelliform lesions in 2 eyes of 2 patients (Stage 2), pseudohypopyon lesions in 6 eyes of 5 patients (Stage 3), vitelliruptive lesions in 4 eyes of 3 patients (Stage 4), atrophic lesions in 7 eyes of 5 patients (Stage 5), and fibrotic lesions in 6 eyes of 4 patients (Stage 6). Best-corrected visual acuity and PHP visual field defect index were averaged for each stage. Best-corrected visual acuity showed a good correlation (P = 0.01) with the morphologic severity (stage) of the disease (Pearson correlation = -0.88). Similarly, the PHP visual field defect index showed a good correlation (P = 0.03) with the morphologic severity (stage) of the disease (Pearson correlation = 0.78). Finally, best-corrected visual acuity showed a good correlation (P = 0.02) with the functional PHP visual field defect index (Pearson correlation = -0.83) about the morphologic stage of the disease. CONCLUSION: Preferential hyperacuity perimetry could be considered an adjunctive useful tool in the evaluation of functional impairment and disease progression in patients with Best vitelliform macular dystrophy.
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