Optic nerve hypoplasia and micropapilla(ONH)
Also known as: Optic nerve hypoplasia · Micropapilla · Congenital optic nerve hypoplasia · Sehnervenhypoplasie · Bilateral Optic Nerve Hypoplasia · …
Overview
What it is
This condition involves the congenital underdevelopment of the optic nerve, known as optic nerve hypoplasia, or an abnormally small optic disc, called micropapilla. These structures are crucial parts of the eye's visual pathway, and their underdevelopment impairs the transmission of visual signals from the eye to the brain. It is a congenital defect of the visual system that is present from birth.
How it presents
Symptoms are typically noticeable in puppyhood and can include uneven pupil sizes, bumping into objects, or partial to complete blindness in the affected eye. In mild cases, there may be no obvious signs, and the condition is only discovered during a veterinary eye exam.
Treatment
There is no treatment or cure to reverse this condition, but it is painless and affected dogs usually adapt very well. Diagnostic evaluation, such as an ECVO-DOK eye examination, typically costs between 150 and 500 EUR.
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
24 of 37 breeds
Mandatory testAkita
Mandatory testDutch Schapendoes
Mandatory testEast Siberian Laika
Mandatory testGreenland Dog
Mandatory testHokkaido
Mandatory testIcelandic Sheepdog
Mandatory testJämthund
Mandatory testKarelian Bear Dog
Mandatory testKintamani-Bali Dog
Mandatory testKishu
Mandatory testKomondor
Mandatory testKorean Jindo
Mandatory testLapinporokoira
Mandatory testMiniature Schnauzer
Mandatory testMudi
Mandatory testNorwegian Buhund
Mandatory testNorwegian Elkhound (Black)
Mandatory testNorwegian Elkhound (Gray)
Mandatory testNorwegian Lundehund
Mandatory testPuli
Mandatory testPumi
Mandatory testSamoyed
Mandatory testShikoku
Mandatory testSmooth-haired Dachshund
Treatment cost
Estimated range of typical treatment cost. Actual cost depends on severity, clinic and region.
Frequently asked
What is Optic nerve hypoplasia and micropapilla?
This condition involves the congenital underdevelopment of the optic nerve, known as optic nerve hypoplasia, or an abnormally small optic disc, called micropapilla. These structures are crucial parts of the eye's visual pathway, and their underdevelopment impairs the transmission of visual signals from the eye to the brain. It is a congenital defect of the visual system that is present from birth.
How is Optic nerve hypoplasia and micropapilla tested?
Tests currently in our database: ECVO Augenuntersuchung (DOK).
Which breeds are most affected?
Most commonly affected: Akita, Dutch Schapendoes, East Siberian Laika, Greenland Dog, Hokkaido, Icelandic Sheepdog, Jämthund, Karelian Bear Dog.