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M. K. Tsilimbaris, C. Tsika, D. Papageorgiou, M. Charoniti, J. Moschandrea, I. Pallikaris; Evaluation of Visual Performance After PRP in Patients With Bilateral PDR With the Use of the National Eye Institute 25-item Visual Function Questionnaire. Invest. Ophthalmol. Vis. Sci. 2009;50(13):3770.
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To evaluate the effect on visual functions of laser panretinal photocoagulation (PRP) as a treatment for bilateral Proliferative Diabetic Retinopathy
In this study, the longer version of the National Eye Institute 25-Item Visual Function Questionnaire (VFQ-25+Optional Items) was used to evaluate the qualitative changes in patients’ vision. 20 patients (12 males and 8 females) with bilateral Proliferative Diabetic Retinopathy (or unilateral if monocularly deprived) treated with PRP were included (median of age: 62.5 , range: 27-80). Patients received 4,123 laser spots (200 um) per eye in average, in consecutive sessions. The VFQ-25 was filled in by interview twice, at the beginning and at least one month after the completion of the PRP. The score for each question was noted at a scale of 100 and all the questions were classified in 12 categories, equally counted among at the final score. According to our sample, after appropriate power calculation, a difference of 20 points was accepted as statistically significant difference between the 2 sessions.
60% (12 out of 20) of the patients didn’t report significant changes at the quality of their vision after the treatment with PRP, whereas a 25% (5 out of 20) stated significant amelioration and another 15% (3 out of 20) significant deterioration of their vision. Additionally, there was no significant difference in any of the questionnaire subscales.
Panretinal photocoagulation as applied in our study, although destructive in nature, is well tolerated by the patients, without interfering significantly with their quality of life.
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