Opthy vs Life

Pupillary Distance: The key to your perfect glasses. Discover Opthy, powered by global eyewear expert EssilorLuxottica. Get your Pupillary Distance just right with Opthy, the solution backed by EssilorLuxottica’s eyewear experts. Swiftly measure your Pupillary Distance (PD) with a few clicks, so you can find a comfortable and personalized fit for your perfect glasses. Moreover, experience the cutting-edge capability of turning your iPhone into a 3D body scanner and measurement device for purchasing prescription Rx glasses online with Opthy. Key Features: • Advanced contactless tool for PD measurements: Opthy's cutting-edge technology specializes in swiftly capturing Pupillary Distance (PD) measurement, revolutionizing the conventional process. • Quick IPD measurements for far focal lengths: Opthy offers quick Interpupillary Distance (IPD) measurements for far vision, allowing you to find a comfortable viewing experience for distant distances. • Order online prescription glasses with confidence: Opthy empowers you to confidently order prescription glasses online, knowing that you obtained personalized measurements for achieving a comfortable fit. About Pupillary Distance: Pupillary Distance is the distance between the center of your pupils, measured in millimeters. An average PD measurement is about 63mm. This crucial metric is essential when buying glasses, as it indicates the specific lens area you look through, helping you to achieve optimal comfort and clarity in your visual experience. Swift and User-friendly: Opthy has streamlined the process for you. All you need is your iPhone; the Opthy app will walk you through the quick and seamless scan. Once done, you'll receive the all-important Pupillary Distance measurement. Suitable for Everyone: Whether you wear glasses or not, Opthy caters to all adult users. It provides personalized Pupillary Distance measurements for compatible prescriptions. Prescription Compatibility: Opthy is compatible with single-vision prescription lenses between -5D and +5D. Please note that it is unsuitable for higher-powered prescriptions, bifocals, progressives, or multifocals. Professional in-person PD measurements are recommended for achieving the best fit and visual experience for individuals requiring more complex prescriptions. Age Restriction: For user safety, Opthy is not intended for use by persons under the age of 18. EssilorLuxottica prioritizes the well-being of our users and adheres to age-appropriate guidelines. Experience Cutting-edge Technology: Opthy harnesses cutting-edge technology to enhance your eyewear selection process. Its innovative approach to measuring Pupillary Distance (PD) empowers you with your personal PD so you can make confident decisions when purchasing glasses or adjusting your virtual reality (VR) headset.

Life-Link.app is free to use. If you find it useful, you can optionally support running costs with a yearly contribution or a one-time thank-you in the app. Contributions do not change features. Prices are shown before you pay. Not a substitute for emergency services. Life-Link.app helps people stay in touch in small, informal groups of two or more. No social media — just being social. Only people you invite can see your status or chat with you. You might live alone and want low-pressure contact with people you trust — to say "I'm OK" or "I NEED HELP!" and know the right people will see it. You might be a friend or relative who gets a nudge when someone wants to connect, or an alert when they need support. Or both: one carer supporting several people, or one person with several contacts looking out for them. WHAT YOU CAN DO • Post wellbeing status — Feeling Great, I'm OK, Feeling Unwell, Feeling Bad, or I NEED HELP! — so Emergency Contacts are notified immediately • Receive notifications for alerts, replies, and activity from contacts you care about • Group chat with your Life-Link.app connections • Share location when you choose, with map context during an active emergency (only when enabled) • Add optional profile details (e.g. medical notes) that approved Emergency Contacts may see on the emergency dashboard when you ask for help WELLBEING & HEALTH DATA Life-Link.app is not a medical device and does not diagnose conditions. Core alerting works from the status you choose to post — no wearable or Health data required for basic use. Wellbeing status (user-initiated): You choose when to post Feeling Great, I'm OK, Feeling Unwell, Feeling Bad, or I NEED HELP! Optional notes included. Updates appear on your Timeline and notify approved Emergency Contacts. Optional Wellbeing Data (experimental; permission required): On the Life-Link.app iPhone app you may turn on Use and show Wellbeing Data in Settings and choose a source — Apple Health (heart rate and steps) or a compatible smart ring via Bluetooth. Readings may be inaccurate, delayed, or unavailable. You decide whether Emergency Contacts can see Wellbeing Data during I NEED HELP! During an active I NEED HELP! alert with emergency Wellbeing sharing on, and while your Life-Link.app stays open, fresher readings may upload so approved Emergency Contacts can see optional heart rate, steps, and (for ring) SpO₂ on the emergency dashboard, context only, not diagnosis. Contacts cannot read your ring or Apple Health directly and cannot trigger a new read on your phone. You can turn Wellbeing Data off, change source, or unbind a ring anytime. We do not sell health or wellbeing data, use it for ads, or monitor you for marketing. The app may remind you (not your contacts) if device battery is critically low and not charging. Wellbeing statuses, notifications, chat, and emergency location sharing work fully without a smart ring or Health data. Wellbeing Data is always optional. BACKGROUND LOCATION (ONLY WITH YOUR CLEAR PERMISSION) Optional and only for emergency support: after "I NEED HELP!", and only if you allow background access, location may be shared with your Emergency Contacts for up to 24 hours, nobody else, not for ads. Without that permission and status, background location is not used for sharing. PRIVACY AND CONTROL • You choose Emergency Contacts and who can message you • Foreground location is optional when you turn it on • Optional Apple Health and Bluetooth ring access require separate permission in Settings • Read our privacy policy for full details Life-Link.app is for communication and everyday support between people who already know each other. Not a substitute for emergency services — call your local emergency number when life or safety is at immediate risk. Each log-on requires accepting the Terms of Service and Privacy Policy. Review them for changes before logging on. Privacy policy: https://app.life-link.app/privacy Terms: https://app.life-link.app/terms