Both breeds are affected by juvenile cataracts which can occur at up to four years of age.

Other diseases found less commonly include glaucoma, juvenile cataracts, osteochondritis, hypothyroidism and diabetes mellitus.

Health issues in the breed are genetic defects of the eye such as juvenile cataracts, corneal dystrophy, and progressive retinal atrophy.

Glaucoma, retinal fold dysplasia, corneal ulcers and juvenile cataracts are also conditions which have been known to afflict French bulldogs.

Juvenile cataracts: A congenital opacity of the lens of the eye due to abnormal early degeneration of the lens tissue.

Rothmund-Thomson syndrome, also known as poikiloderma congenitale, is characterized by premature aging, skin and skeletal abnormalities, rash, poikiloderma, juvenile cataracts, and a predisposition to cancers such as osteosarcomas.