Lenticonus is an abnormality of the lens
of the eye
in which it has a steeper curvature than is normal and bulges forward
in the shape of a blunted cone.
Lenticonus may also be described as "a conical
projection of the anterior or posterior surface of the lens [of the eye]".
Because lenticonus may affect either the front surface
(anterior) of the lens or, occasionally, the back surface (posterior)
of the lens, it may be classified as:
- Anterior lenticonus, or
- Posterior lenticonus.
Of these two possibilities, anterior lenticonus is more
common and may be associated with Alport's syndrome.
Clarification:
Note the importance of the shape of the distortion
of the lens:
If the bulging of the lens is spherical rather than conical
the condition is called lentiglobus.
(See also, for comparison keratoconus
and keratoglobus.)
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Lenticonus is a rare condition that is usually congenital
(which means "present since birth").
More about Ophthalmology: This section includes short definitions
of many diseases, disorders, and conditions of the eyes and visual system.
For definitions of other terms in this category, choose from the list
to the left (but note that this is not a complete/exhaustive list).
Other related pages include the diagram
of the eye, and definitions
of parts of the eye, a description
of the human retina, and definitions
of parts of the retina, and the section of short definitions
of clinical and surgical procedures re. eyes and human visual system.
For further information see also our section of Books
about Ophthalmology. |
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This Section
is about
Diseases
and Disorders of the Eyes and Visual System.
To read about other diseases, disorders, or conditions of the eye and
human visual system, use the links on the left-side of this page.
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