I understand your concern, there's macular degeneration in my family and I've started to visit the eye doctor annually. Blaming blue light being the sole reason for the increasing number of myopia is too simplified. Instead or at least alongside there's this constant trend of looking near so the eyes can't get their rest. You know what I mean? If you're not sitting at an arm's length of a monitor, you're staring at your smart phone or tablet. And aside of the electronic devices you're looking at papers on your desk in front of the monitor. The TV being a couple of yards away is the most distant object people now seem to watch. When was the last time you've spent a whole day looking at the horizon?
And yes, as far as I can understand if a LED has the same colour temperature than an incandescent light bulb the amount of blue is similar. It can be done in many ways starting from an external layer of yellow dye to building them to produce warmer light. Either way, the lower the colour temperature is the less blue light there is. There's no such thing as invisible blue light. If the light looks yellow/amber/orange, there's no room for blue.
For colour temperatures for different light sources, this might give you some advice:
