A new DNA test for retinal dysplasia in the English Cocker Spaniel now is available.

X-Linked Retinal Dysplasia is a severe disorder of the eye, causing retinal detachment and cataracts. As an X-linked recessive disorder, it is carried by females and passed down to affect males. Affected puppies present with the behavioural symptoms of severe visual impairment. Their pupils do not react to light, and they present with darkened irises, retinal bleeding and sometimes cataracts. Cryptorchidism (absence of at least one testicle in the scrotum) may also be linked to the disorder.

X-Linked Retinal Dysplasia in the English Cocker Spaniel can be individually tested with test number H725 or as part of the CombiBreed pack English Cocker Spaniel (test number H598).