Okay, after snooping around a bit on the web, I found a current photo of Sanibel Island Lighthouse. It is still standing!

Sanibel Island

Once at this page, scroll down to the section "SETTING THE SCENES ACROSS SOUTHWEST FLORIDA" (about halfway down the page) then click on Sanibel update - "photos". The second photo shows the lighthouse. It is an aerial shot, so it is hard to see how much (if any) damage occurred. [Thanks to Paul for the link below]

I also saw a video from the local NBC affiliate that flew over the lighthouse, but the quality of the video is poor, but if you are interested, go to NBC Affiliate then click on "Comprehensive aerial tour of Lee County damage". Scroll down to Saturday - "Sanibel Aerials, part 2". The lighthouse appears in the first minute or so of the video.