According to a report in the Sydney Morning Herald, 3D TV should not hurt your eyes. Learn more at http://news.smh.com.au/breaking-news-national/3dtv-poses-no-extra-health....
You should buy 3D-ready HDTV now if you are planning to purchase a new HDTV anyway because they provide excellent 2D quality, and will be ready when the 3D surge hits not long from now.
You should be able to purchase 3D TV-ready HDTV and Blu-ray players Best Buy, Wal-Mar, Target, Sears, HHGreg, Costco, RadioShack, and numerous online retailers such as Amazon.
Yes, you may be able to watch 3D TV using a home theater receiver using HDMI 3D pass-through technology. Be sure to check if your home theater receiver supports this.
Yes, you may be able to watch 3D Blu-ray Discs on your Sony PS3 using a firmware update that will be available in the next few weeks.