Where could we find a vision test to gauge dad's vision after cataract surgery both eyes.

Hello Anon

Thank you for writing.

The clinic where your father got this done should offer testing as part of the procedure, as part of their aftercare.

If they don't, an eye and vision clinic or optometry clinic can do this for you - some even do it for free or it may be covered by Medicare. Check first before deciding where to go.
Best,
Susan