It's very common for patients to develop hypoglycemia when they are being treated for diabetes. Severe hypothermia can cause fatigue and weakness. The lack of heat leads to a loss of energy as the body tries to conserve. By the time hypothermia is bad enough to cause fatigue, it is a severe medical emergency.
Zyl eyeglass frames Zyl is the most common plastic frame material because it can assume a large array of colors, textures and patterns. Temples and frame fronts can be cut from blocks of zyl extruded as a sheet of block acetate. Or, granular zyl can be liquefied and then injection molded.
Also, regardless of the rating of the lens, prescription safety lenses must be in a frame marked Z87-2+ to qualify as safety glasses that are compliant with the ANSI Z87.1-2010 standard. Also, detachable side shields on safety frames are marked Z87+ if they are impact-rated.