Validation of i-ROP DL to Detect More Than Mild ROP

The purpose of the pivotal reader study is to assess the readers' accuracy in diagnosing plus disease versus no plus or pre-plus disease with or without the aid of the i-ROP DL. Ophthalmologists' performance metrics for the following modalities will be evaluated: * Standard evaluation following the standard of care process ("without i-ROP DL") * Evaluation following the standard of care process with the aid of the i-ROP DL ("with i-ROP DL") This retrospective multi-reader multi-case (MRMC) study will have an enriched sample of approximately 300 eye cases (1 study eye per subject): 60 plus cases, 120 pre-plus cases and 120 no plus cases. Enrichment is with respect to proportions of plus cases and pre-plus cases. The primary objective of this study is to evaluate whether the area under the receiver operating characteristic (ROC) curve (AUC) based on probability scores of plus disease statistically significantly non-inferior or superior with the aid of the i-ROP DL versus without the aid of the i-ROP DL. Multiple secondary endpoints are outlined in the next section.