ViaOpta Sim allows patients with visual impairments to better explain their eye conditions to friends, family, caregivers and colleagues. The app will also help patients themselves to gain a greater understanding of their condition and how it can develop.Doctors will be able to use this app to educate patients about their condition.The app provides:- Live simulations of 12 visual impairments which can be seen at different levels of severity: initial, intermediate, advanced (where applicable) Central retinal vein occlusion (CRVO) Branch Retinal Vein Occlusion (BRVO) Myopic choroidal neovascularization (CNV) Diabetic retinopathy Vitreomacular traction (VMT) Diabetic Macular Edema (DME) Glaucoma Cataracts Age-related macular degeneration (AMD) - Wet and Dry AMD have been combined into a single filter Retinitis Pigmentosa Dry Eye Presbyopia- A personalized view of ‘My condition’ allowing users to save a specific condition setting- The ability for users to share the filters with family and friends