Development and Validation of a Model to Predict Fast Progression in Glaucoma

Blood samples will be processed for extraction of DNA and genotyping. 10 ml of blood will be collected using standard procedures. The samples will be de-identified and receive a masked ID which will correspond to the existing masked ID in the DGR database. 2 ml will be sent to Genentech using frozen samples for genotyping using the Illumina Global Screening Array (GSA) kit. The remaining will be processed and stored at the Duke Eye Center. These samples may be maintained indefinitely or until they are exhausted. These samples will not be available for diagnostic or therapeutic purposes.