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Glossary terms about Lateral Resolution

Lateral Resolution
Resolution in the plane perpendicular to the optical axis (ie the x,y plane).

3 pages mention Lateral Resolution

Collecting Z stacks
However the axial resolution is worse than the lateral resolution
Confocal microscopy
The axial (Z) resolution is always worse, and unlike the lateral resolution (which relates directly to the NA) the axial resolution depends on the square of the NA. 
Scanning and resolution
Note the 40x 1.25 lens has better resolution than the 40x 0.75 . Magnification Numerical Aperture lateral resolution (μm)* 10x 0.