研究目的
This study investigated multifocal pupillographic objective perimetry (mfPOP) stimuli that target the intrinsic photosensitivity of melanopsin retinal ganglion cells. The diagnostic potential for glaucoma is compared between stimuli biased toward either cone input to these cells or their melanopsin response.
研究成果
In moderate to severe glaucoma, diagnostic accuracy of yellow and blue was similar, but blue stimuli showed limited ability to resolve scotomas. Blue mfPOP stimuli, however, may have advantages over yellow in detecting early glaucoma.
研究不足
The study was limited by the small sample size and the variability in responses to blue mfPOP stimuli in patients with glaucoma. The diagnostic accuracy of blue stimuli was similar to that of yellow stimuli in moderate to severe glaucoma, but blue stimuli showed limited ability to resolve scotomas.
1:Experimental Design and Method Selection:
The study used mfPOP stimulus protocols with either 33-ms yellow or 750-ms blue stimuli to target the intrinsic photosensitivity of melanopsin retinal ganglion cells. Pupillary responses were measured, and mixed-effects regression was used to quantify results. Diagnostic accuracy was assessed using receiver operating characteristic (ROC) analysis.
2:Sample Selection and Data Sources:
Nineteen glaucoma patients and 24 normal subjects were tested. Subjects’ color discrimination was assessed using the Farnsworth 100-hue test.
3:List of Experimental Equipment and Materials:
A prototype of the US Food and Drug Administration–approved nuCoria Field Analyzer was used for presenting mfPOP stimuli and monitoring pupil diameter.
4:Experimental Procedures and Operational Workflow:
Subjects were tested using mfPOP stimulus protocols with either 33-ms yellow or 750-ms blue stimuli. Pupillary responses were measured, and mixed-effects regression was used to quantify results.
5:Data Analysis Methods:
Mixed-effects regression was used to quantify results. Diagnostic accuracy was assessed using receiver operating characteristic (ROC) analysis.
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