French bulldogs have average vision compared to other breeds; not as sharp as hunting dogs but better than many. Not like humans though.
French bulldogs have better night vision than humans due to their larger pupils, more light-sensitive rods, and the tapetum lucidum layer in their eyes.
Dogs aren't "color-blind" but see differently from humans. They mainly perceive blues and yellows, not reds. All breeds have this vision.
French bulldogs see up to 20 ft, blur after 30 ft. Their exceptional hearing and smell may make them appear attentive to distant stimuli.
As your Frenchie ages, there are certain eye problems they would suffer from.
Prevent French Bulldog conjunctivitis: Choose reputable breeders with healthy parents. Treat with antibiotics, use dog eye drops for hygiene.
French Bulldogs can suffer from corneal ulcers, causing vision loss. Prompt treatment with medication can help restore their sight.
Frenchie breed's common issue: cherry eye - protruded third eyelid with a red bulge resembling a cherry.