Custom Stable Training Course

The Custom Stable Training Course is designed for students and practitioners who want to learn to fit the best scleral lens on the market, the Custom Stable. Simply watch the video and then take the quiz below.

Attention Students: Our 2019 supply of free student Custom Stable Elite compact fitting sets have run out. We will be relaunching this program again in March 2020 for the class of 2020 and 2021. We encourage you to go ahead and watch the video and practice the questions on the quiz, but you will not be able to submit your information for a complimentary set until March 2020.

Custom Stable Training Course Quiz

Before we begin...

Are you a class of 2019 or 2020 optometry student?
Yes
No

1) Upon insertion of the Custom Stable there is a large bubble, select the appropriate action. choose a lower sagittal height lens in the set
choose a flatter base curve
remove and reapply lens
fenestrate the lens
2) What does a dark spot in the center of the Custom Stable indicate when you check it with your blue light? the lens sagittal height is too high
the lens sagittal height is too low
the lens has a large bubble
your blue light is going out, check batteries
3) Why is it important to note the location of the laser marks on the Custom Stable Elite? to independently locate the landing zone meridians
to dial in front cylinder and compensate for rotation
to check central clearance
answers 1 & 2
4) What technique can you use to make the front surface of the Custom Stable more visible in the slit lamp? shine two blue lights at once on the eye
swab the front surface with your NAFL strip
use a wider slit lamp beam
turn up your slit lamp beam
5) Steepening the Scleral Landing Zone can reduce excessive edge lift as well as: control excessive movement of the lens
stop tear exchange
decrease sagittal depth
answers 1 & 2
6) What indications are the Custom Stable selected for? Keratoconus & Post Surgery
Regular Astigmatism & Irregular Astigmatism
Severe Surface Diseases
all of the above
7) Which statement best describes a full scleral lens? lands on the cornea
moves like a corneal GP
lands on the sclera alone
diameter between 12.5-14.5
8) Which zone in the Custom Stable controls sagittal height the most? Scleral Landing Zone
Central Visual Zone
Limbal Clearance Zone
Twilight zone
9) How much clearance should there be over the limbus immediately upon application of the Custom Stable lens? 100um
400 um
250-350 um
10 um
10) What can be a benefit of flattening the Scleral Landing Zone? reduce tear exchange
reduce blanching/impingement
reduce central clearance by 100 um
centration of the Custom Stable
11) Which statement best describes Custom Stable removal? use the large DMV, place in the center and release the lens
pop out the lens with the eye lids
use the small DMV, place on the outer edge and pivot in a rocking motion
use the small DMV, pull out from center
12) How long should the Custom Stable lens settle before checking for blanching and analyzing the overall central clearance? 10-15 minutes
1 hour
30-40 minutes
20-30 minutes
13) Which statement describes the Custom Stable Elite? a toric Scleral Landing Zone improves centration of the lens
a toric Scleral Landing Zone independently fits on oblique scleras
front toricity is orientated without the use of weighting
all of the above
14) If a Custom Stable lens is riding low and temporal, what can you do to correct this? steepen the Limbal Clearance Zone
steepen base curve
reduce overall central clearance OR use the Custom Stable Elite design
flatten the Scleral Landing Zone
15) How do you calculate an over refraction on a Custom Stable Elite Front Toric? simply add the powers together
use the LARS method and the sphero cylindrical over-refraction
only use the cyl power to calculate
none of the above
16) How much central clearance is acceptable after the settling of the Custom Stable lens? 0-100 um
50-150 um
150-250 um
250-400 um
17) Performing a flatter (+) change in the Limbal Clearance Zone will result in... a central clearance increase of 100 um
a central clearance decrease of 100 um
keep the central clearance as is
a steeper edge
18) What should the bowl of the Custom Stable lens be filled with before application? any approved GP solution
preservative free saline
Boston Advance
tap water
19) What is the thickness of all Custom Stable lenses in the fitting set? as thin as possible
350 um
400 um
variable in the set
20) What 15.8 Custom Stable trial lens (or closest to it) would be a good starting point for a patient with K readings of 44.00/48.50? 4400 sagittal depth
7.67 base curve
4850 sagittal depth
4600 sagittal depth
21) In an OCT image, how much of the lens edge should sink into the conjunctiva/sclera? 10%
80%
none
50%
22) Where are the laser marks located on the CS Elite? on the steep corneal meridian
0/180 axis
on the flat landing zone of the lens
90/270 axis
23) The shaded zone pictured below represents the... Central Visual Zone
Scleral Landing Zone
Limbal Clearance Zone
Magic Zone
24) If the trial lens used is the 7.85/-2.00/15.8 CS Elite and the lens is rotated 30 degrees left with an over refraction of -1.00-1.50x60 what would your final power be? -3.00 -1.50 x 30
-3.00 -1.50 x 90
+1.00 -1.50 x 110
-1.00 -.75 x 90
25) Performing a steeper change in the Scleral Landing Zone will result in... a central clearance decrease of 30um
a lowered edge by 35%
a central clearance increase of 30 um
overall clearance may or may not be effected depending on whether the landing zone is outside the tear chamber