This brand name is a playful take on the word "retina".
The word "retiny" contains only six letters and three syllables. Leading companies using three syllable names include Santander, Verizon and Microsoft.
This domain was first registered in October 2016. Older domains have an advantage when ranking in search engines.
Retiny.com is a .com domain. Dot com domains are the most sought after top-level-domain in the world, famously used by websites like twitter.com. Once secured, a .com all but guarantees no-one else can outrank you for your own name in the long run.