mRetinaLearn vs ToricTrouble

RetinaLearn Professional Education Platform EDUCATIONAL REFERENCE TOOL FOR HEALTHCARE PROFESSIONALS RetinaLearn is a comprehensive digital study companion designed exclusively for ophthalmologists, retinal specialists, and eye care professionals seeking to advance their knowledge of retinal conditions through structured educational content. WHAT IS RETINALLEARN? A digital educational resource equivalent to medical textbooks and study guides, providing reference materials about retinal pathologies for professional development and continuing medical education. TARGET AUDIENCE: • Licensed ophthalmologists and retinal specialists • Medical students and residents in ophthalmology • Eye care professionals pursuing continuing education • Healthcare educators and training programs EDUCATIONAL FEATURES: Study Case Library: Explore educational case presentations designed for professional learning and knowledge assessment. Review hypothetical scenarios that demonstrate various retinal conditions for educational purposes. OCT Reference Materials: Access educational examples of OCT imaging findings organized by pathology type. Study characteristic features and imaging patterns for enhanced learning and professional development. FFA Study Guide: Review fluorescein angiography examples with educational annotations and reference information designed to support professional education and training. Educational Assessment Tools: Interactive learning modules that help professionals test their knowledge and understanding of retinal conditions in an educational context. PRIVACY & OFFLINE LEARNING: Complete offline functionality ensures secure, private study sessions without data sharing or internet requirements. All processing occurs locally on your device. IMPORTANT: EDUCATIONAL USE ONLY This application is designed EXCLUSIVELY for educational and reference purposes. It is NOT a medical device and does NOT: • Provide medical diagnosis or patient evaluation • Offer clinical treatment recommendations • Support patient care decisions • Replace clinical examination or professional judgment This app serves the same function as medical textbooks, study guides, and educational reference materials used in professional medical education. PROFESSIONAL VERIFICATION REQUIRED: Users must acknowledge their professional healthcare status and agree to educational-only use before accessing content. EQUIVALENT TO: • Digital medical textbooks (Gray's Anatomy, Netter's Atlas) • Educational case study collections • Professional development study materials • Medical reference guides and atlases CONTINUING MEDICAL EDUCATION: Supports professional development goals and lifelong learning for eye care specialists. Content is curated for educational value and professional knowledge enhancement. DISCLAIMER: This educational platform is designed for healthcare professionals' learning and reference only. Always consult comprehensive clinical evaluation and professional medical judgment for all patient care. This app does not provide medical advice, diagnosis, or treatment recommendations. Transform your professional education with RetinaLearn - your digital study companion for retinal knowledge advancement. RetinaLearn — Educational Reference for Ophthalmologists RetinaLearn is an educational tool and comprehensive learning reference for ophthalmology professionals and medical students worldwide. Access is granted after a one-time purchase; no subscription or ongoing fees. All users—regardless of employer, organization, or location—can access the full suite of educational materials immediately after purchase from the public App Store.

Toric Trouble works up the outcome after a toric intraocular lens. The app calculates backwards: from biometry, implanted lens and subjective refraction it determines which of the three does not fit the other two. FOUR POSITIONS • Lens — which lens is actually at work? The main clinical question. • Refraction — what refraction was to be expected? Turning the axis simulates a misaligned lens. • Cornea — which cornea fits lens and refraction? Comparing it with the keratometry is the diagnosis. • Plausibility — all three checked against each other, naming the ghost astigmatism: what none of the three explains. FURTHER FEATURES • A recommendation where to rotate, what residual cylinder would remain at best — and whether an exchange is the better choice • Axis diagrams with uncertainty wedges from the actual measurement tolerances: cornea 0.30 D vectorial, refraction 0.25 D, read-off axis ±3° • Keratometric index selectable in four steps: 1.3375 (Javal), 1.332 (Zeiss), 1.3295 (Kooijman), 1.3281 (Liou & Brennan) • Effective lens position from the postoperatively measured anterior chamber depth instead of a prediction — this removes the largest uncertainty from the calculation • Surgically induced astigmatism (SIA) from pre- and postoperative keratometry • Plausibility check on every entry: impossible values block the calculation rather than yielding a result that looks like any other • Complete manual inside the app, in three languages CALCULATION CORE The basis is the Castrop formula, developed with Prof. Achim Langenbucher, Saarland University, and published peer-reviewed: Langenbucher A et al. Considerations on the Castrop formula for calculation of intraocular lens power. PLoS One 2021;16(6):e0252102 Langenbucher A et al. The Castrop formula for calculation of toric intraocular lenses. Graefes Arch Clin Exp Ophthalmol 2021;259(11):3321–3331 Both papers are linked inside the app, directly below the result. Where the app goes beyond what is published, it says so and describes the calculation path in full in the bundled manual. All calculation runs on the device, in C99 compiled into the binary. No account, no sign-in, no network, no advertising, no data collection. German, English and Italian. For ophthalmologists and other eye care professionals. Not a medical device; responsibility for every clinical decision remains with the user.