Table 4. Proposed Development Principles and Potential Solutions for Mobile Phone Apps Engineered for Military Teleophthalmology.

Development principle	Potential solutions
Secure	Data security HIPAA compliance End-to-end encryption Camera functionality and photograph storage solutions
Simple	Easy to set up and use with no training required Integrates functionality familiar to users: text, call, video Minimize required data fields Automated demographic information entry using identification card scanning Automated focusing for image capture Integrated toolbox with examination and diagnostic testing Artificial intelligence diagnostic support and treatment recommendations Functionality for both ocular and systemic trauma and disease
Reliable	Engineer solutions for firewalls that maintain security Asynchronous and synchronous modes Integrate with existing communication systems Ensure functionality in denied, degraded, or disrupted communication environments Multiple rounds of development and testing to eliminate bugs High speed Automated routing of consultations with back-up on-call professionals
Human	Direct communication with clinician available if needed Follow-up with clinician can be arranged if needed

Abbreviation: HIPAA, Health Insurance Portability and Accountability Act.