Rifle Scopes Which optics provide diopter eyepieces?

[critterdoc]

I'm starting to need more 'n more help with target focus as these eyes age.

Do the following optics provide adjustable diopter eyepieces?

Leupold 4.5-14x50 Mark 4
NightForce 3.5-15X50 NXS
Burris XTR 3X-12X-50

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