Hi Jacqui,
This is scarey. I thought it was commonly accepted now that coloboma is
NOT part of CEA. I believe DNA tested clear for CEA dogs can still have
a coloboma. What is the understanding of other people please?
Barbara B

>In relation to CEA
>
>CEA is an eye disease which presents in various forms, the most
>serious of which is coloboma, an absence or defect of parts of some
>eye tissue affecting vision which may lead to blindness. The
>veterinary ophthalmologists recommend that Border Collies with
>colobomas are not used for breeding. Only a small % of affecteds
>have the coloboma form of CEA. The various forms of CEA all have the
>one common causative gene. The incidence of CEA affecteds is
>approximately 3.3%, with carriers approximately 36%. The program
>allows the use of carriers and affecteds for breeding within a 15-
>year time frame for elimination of the CEA genes from the breeding
>pool.
>