研究目的
To investigate the clinical use of multifocal pupillographic objective perimetry (mfPOP) to identify patients with and without diabetic retinopathy.
研究成果
Asymmetry in local response delays measured by mfPOP may provide useful information regarding the severity of diabetic retinopathy and may have clinical use as a rapid, noninvasive method for identifying functional loss even in the absence of NPDR.
研究不足
The study included a small number of diabetic subjects with more severe retinopathy. Although subjects with peripheral neuropathy were excluded, reports of retinal sensitivity loss predominantly affecting the peripheral retina have been documented.
1:Experimental Design and Method Selection:
The study used three mfPOP stimulus variants to test 44 regions per eye arranged in a five-ring dartboard layout. Retinopathy severity was determined using the ETDRS standard for fundus photography.
2:Sample Selection and Data Sources:
Pupillary responses were measured from both eyes of 25 adults with none to moderate diabetic retinopathy and 24 age-matched controls.
3:List of Experimental Equipment and Materials:
A prototype of the FDA-cleared nuCoria Field Analyzer (nCFA; nuCoria Pty Ltd., Acton, ACT, Australia) was used.
4:Experimental Procedures and Operational Workflow:
Subjects were tested with three randomized mfPOP stimulus protocols. Test duration for each protocol was 6 minutes, consisting of nine 40-second recording blocks.
5:Data Analysis Methods:
Analyses were performed in MATLAB. The mean pupil response for each region was obtained by a multiple regression analysis. ROC curves were produced from contraction amplitudes and time to peak responses.
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