{"component":{"type":17,"accent_color":3123338,"components":[{"type":10,"content":"-# WikiRNG · Roll of 11/9/2026 · by [aarav\\_shah](https://wikirng.com/u/aarav_shah)"},{"type":10,"content":"## [Sloan letters](https://wikirng.com/roll/I4N0SY)\n*Set of optotypes used to test visual acuity*"},{"type":10,"content":">>> Sloan letters, designed by American ophthalmologist Louise Sloan in 1959, are a set of optotypes used to test visual acuity generally used in Snellen charts, logMAR charts and ETDRS charts."},{"type":14,"divider":true,"spacing":1},{"type":10,"content":"### 🟩 Notable · 78,346 SP\n-# Top 27%"},{"type":14,"divider":true,"spacing":1},{"type":10,"content":"🟦 🐙 **GitHub** · Obscure · +63,318 SP\n-# Links to GitHub.\n🟩 🧬 **PubMed** · Notable · +3,087 SP\n-# Links to PubMed.\n🟩 🔐 **Paywalled** · Notable · +2,222 SP\n-# Cites a source behind a paywall.\n🟩 📚 **Bookends** · Notable · +2,041 SP\n-# Title starts and ends with the same letter.\n🟩 🔓 **Free to Read** · Notable · +1,728 SP\n-# Cites a source that is free to read.\n🟩 🔍 **Citation Needed** · Notable · +1,234 SP\n-# Has a \\[citation needed\\] tag.\n-# +11 more badges"},{"type":14,"divider":true,"spacing":1},{"type":1,"components":[{"type":2,"style":5,"label":"View roll","url":"https://wikirng.com/roll/I4N0SY"},{"type":2,"style":5,"label":"Read on Wikipedia","url":"https://en.wikipedia.org/wiki/Sloan_letters"}]},{"type":10,"content":"-# Article text from Wikipedia, CC BY-SA 4.0"}]}}