As this is a package extension, if you are new to {admiral} then the best place to first start reading would be this Get Started guide. This extension package follows the same main idea and conventions, and re-uses many functions from {admiral}, so it is important to thoroughly understand these to be able to use {admiralophtha}.
The most important functions in {admiralophtha} are the derivations. Again these follow the same conventions as {admiral} but are focused to ophthalmology-specific needs.
For the ophthalmology ADaM data structures, an overview of the flow and example function calls for the most common steps are provided by the following vignettes:
Support is provided via the admiral Slack channel.