My pen tool used to have arrow pointer and now it is just a circle. Same for eyedropper.
I must have clicked on something. How do i reverse this?
Is caps-lock on?
What are your Photoshop > Preferences > Cursors setting?
You can always try restoring preferences (preferably after after making sure all customized presets like Actions, Patterns, Brushes etc. have been saved).
Photoshop: Basic Troubleshooting steps to fix most issues
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