The lens in a dog’s eye is a transparent layer that helps focus light onto the retina and is held in place by very small threads on its edge. Lens luxation is when these threads bread down and the lens becomes loose, often moving forwards or backward in the eye.
Lens luxation is a serious condition that can be very painful and cause blindness, so it should be treated as an emergency as soon as symptoms appear.
In most cases, depending on the severity, removal of the lens will stop the pain and the pet can still enjoy some level of vision, though it will be different to before so it may take them time to adjust.
The chances of a pet with lens luxation have a successful outcome following treatment is greatly increased when the condition is diagnosed early.