Several captains have experienced the handles on the cabin roof hatches break off. Several have attempted to epoxy them back in place but over a short time they break off again.
Lewmar has a kit to replace these though West Marine couldn’t find the correct one. The correct part number with Lewmar is 360255990. In this approach, you drill a hole through the lens and create a mechanical rather than glue connection for the new handle. This seems to be the best approach. Be sure it looks like what you have to make sure it is correct. It will have a “button” on top of the hatch bolted to the handle below.
I have purchased them from APS (http://www.apsltd.com/catalogsearch/result/?q=360255990) in Annapolis for roughly $16..