Ears, Eyes, and Mouth

A-Z Guide

Adenovirus
Adenoviruses are very common viruses that can cause infections in children. There are over fifty subtypes of adenovirus... »
Amblyopia (Lazy eye)
Amblyopia is the loss of vision caused when a clear image of the world is not available on the retina during key... »
Arboviruses
The arboviruses (arthropod-borne viruses) are a group of viruses that are spread by mosquitoes, ticks, or sand flies.... »
Astigmatism
Irregularities in the curve of the cornea or lens make vision clearer in some planes than others. This asymmetry of... »
Blocked Tear Duct
In many babies, the nasolacrimal duct is not fully developed at the time of birth. Signs of this usually appear in the... »
Cataracts
The lens of the eye is our window to the world. Normally, this lens is crystal clear, transmitting and focusing light.... »
Cleft Lip and Palate
Clefts are gaps in the developing lip and/or palate. They may be small notches or large open spaces. They occur because... »
Cold Sores
Cold sores or fever blisters are caused when a prior herpes infection flares up again. They are usually caused by... »
Colorblindness
Colorblindness is almost always a hereditary condition. Red-green colorblindness is a recessive condition passed on the... »
Common Cold
The common cold is our name for a specific constellation of symptoms, a pattern of illness that can be caused by a... »