Right pupil is a little bigger than the left one after sundown. both react quick to light and dark, but afraid it's horner syndrome. going to doctor.

Not likely: More likely is simple anisocoria, a harmless condition, but if you are worried, see an ophthalmologist for evaluation.

You may be over: Observant, but you also could have an adie's pupil, where light response is normal, but pupillary constriction/dilation as your gaze follows the finger from an arm's length to 6" from your nose...Accommodation. Syphillis and tertiary lues also has the opposite pupillary response, where the accommodation is intact, light reactivity is impaired. Go thee to an optometrist or ophthalmologist.