| Orbscan
IIz Map - Keratoconus |
Go
Back |
|
|
Default Map
|
Case 1
|
|
|
Patient History:
This patient exhibits a classic
Keratoconus shape and cornea thickness. Development of this
cornea shape has occurred over the past twenty five years.
Correction with eyeglasses has not been an option due to the
high irregularity of the cornea surface in the optic zone
area. Cornea thinning is marked in the lower right hand
diagram.
|
|
Click For Full
Resolution Photo
|
|
|
Tangential
Keratometry Map
|
|
|
|
Correction Options:
In the early stages, this
patient wore a tricurve gas permeable Keratoconus lens. As the
cone progressed in the central region an aspheric nipple
design gas permeable Keratoconus was fitted with limited
comfort. The patient proceeded to wear the nipple design with
a soft piggy back lens.
The current fitting was
upgraded to a hybrid soft/gas permeable lens designed for
Keratoconus with comfort lasting ten hours a day. For
additional comfort, a pair of toric soft lenses were fit with
a .16 center thickness to increase lens modulus and enhance
vision correction. Visual acuity with the hybrid lens is 20/20
and in the soft toric 20/30.
|
|
Click For Full
Resolution Photo
|
|
|
|
Default Map
|
Case 2
|
|
|
Patient History:
This 21 year old patient
presents with a unilateral Keratoconus. Onset began in his
late teens. Progression has been rapid. His current pachymetry
is 336 microns. Under slit lamp examination, vertical striated
cells are easily seen along with the apical opacity of 1 1/2
mm. * Note the scale on the Keratometry. His reading of 58.5
diopters requires the scale to be increased.
|
|
Click For Full
Resolution Photo
|
|
|
3-
Dimensional Map
|
|
|
|
Correction Options:
The 3-D map to the left shows
the cone well. With the rapid change of cornea specifications,
this patient requires constant updates. He is currently
wearing a "nipple" design Keratoconus Gas Permeable.
He sometimes has discomfort with the apex of his cone
suffering abrasion and requires a piggy back soft lens to aid
in healing. A new hybrid soft/gas permeable for Keratoconus is
being investigated for this patient, but results are similar
to the gas permeable and piggy back soft. Vision acuity is
20/30.
|
|
Click For Full
Resolution Photo
|
|
