no, after your 90 O visa you apply for a retirement O visa in Thailand that is valid for 12 months. When the 12 months is up you then apply for an extension, you don't apply for an extension on your 90 day visa. It's pretty simple to understand, 12 month O retirement visas are issued in Thailand, and 12 month OA retirement visas are issued in your own country. FYI I have already done this.