X-ray devices?

• Glasses, informally
• X-ray ___, joke shop offering
• X-ray ___ (novelty item)
• Eyewear, commercially
• Glasses, commercially
• Thing with lenses, colloquially
• You can see right through them, slangily
• Glasses, cutely

Wikipedia Word definitions in Wikipedia
Spex or SPEX may refer to: variation of specs , colloquial abbreviation of specifications or spectacles