Coloboma
Also known as: Ocular Coloboma · Optic Disc Coloboma · Iris Coloboma · Kolobom des Auges · Uveal Coloboma · …
Overview
What it is
A coloboma is a congenital eye defect where a portion of the eye's structure, such as the iris, retina, or optic nerve, fails to develop completely. This occurs during fetal development when the optic fissure, which is the groove that helps form the eye, does not close fully, leaving a gap. It is a structural condition of the visual system with a complex inheritance pattern.
How it presents
Owners may notice a keyhole-shaped pupil or a visible notch in the colored part of the eye starting in puppyhood. Depending on the size and location of the gap, the dog may also show signs of vision impairment, though some dogs show no obvious symptoms.
Treatment
While the structural defect itself cannot be cured, regular monitoring through an ECVO eye examination is highly recommended. Management and potential surgical treatments for complications like retinal detachment typically cost between €150 and €3,500.
How it's tested
ECVO Augenuntersuchung (DOK)(ECVO-DOK)
Primary testEye examAugenuntersuchung durch ECVO-zertifizierten Augentierarzt (Dortmunder Kreis). Erkennt PRA, Katarakt, Entropium, CEA, MPP, RD u.a.
Issuing body: ECVO
Result scheme: Eye-ECVO
Affected breeds
1 of 1 breeds
Treatment cost
Estimated range of typical treatment cost. Actual cost depends on severity, clinic and region.
Frequently asked
What is Coloboma?
A coloboma is a congenital eye defect where a portion of the eye's structure, such as the iris, retina, or optic nerve, fails to develop completely. This occurs during fetal development when the optic fissure, which is the groove that helps form the eye, does not close fully, leaving a gap. It is a structural condition of the visual system with a complex inheritance pattern.
How is Coloboma tested?
Tests currently in our database: ECVO Augenuntersuchung (DOK).
Which breeds are most affected?
Most commonly affected: Australian Shepherd.