Collie eye anomaly – High incidence in this breed throughout the world (50–90% has been reported)
Multifocal retinal dysplasia
Generalised progressive retinal atrophy (GPRA)
Central progressive retinal atrophy (CPRA) or retinal pigment epithelial dystrophy (RPED) – becoming less prevalent after the introduction of control schemes
Optic nerve hypoplasia
Optic nerve colobomas (the result of merle to merle breeding)
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