Micropthalmia, also known as nanophthalmia, is a birth defect that results in an abnormally small eye. It may occur in one or both eyes. Micropthalmia is often found in conjunction with other eye abnormalities such as cataracts and glaucoma. The effect on vision caused by micropthalmia ranges from little or no impairment to total blindness depending on the severity and nature of associated eye conditions.

The eye or eyes impacted by micropthalmia will appear small and sunken. Often, your dog’s third eyelid will appear larger than normal.

Most often micropthalmia is an inherited disorder. However, in rare cases it can result from a spontaneous genetic mutation.

A physical examination can detect micropthalmia. It is usually apparent as soon as your puppy’s eyes are open. Further testing may be required to determine if any other eye conditions are present.

There is no treatment for micropthalmia.

Since it is an inherited condition, dogs with a family history of micropthalmia should not be bred nor should you acquire a dog with a family history of this condition.

No, you cannot contract microphthalmia from your dog.