- Define what biometry testing of the eye is
- Define the following in terms of ultrasound: frequency, wavelength, velocity, amplitude
- Define Hertz in terms of frequency
- Describe reflectance
- Identify the frequency of oscillation of most A Scan machines in Hertz
- List the ocular structures that create peaks on an A Scan
- Describe the 2 methods of testing axial length
- Explain how corneal compression affects axial length
- State the rule for error induced with corneal compression of .1 mm
- Use the equation for finding axial length from velocity and time
- Identify the ocular structure responsible for the main spikes in an A Scan (cornea, anterior and posterior lens, retina, sclera, orbital fat)
- List 3 common mistakes that will result in lower spike levels
- Convert millimeters to meters and meters to millimeters
- State what the average length of the following structures are: eye, anterior chamber, lens
- Describe why longer than average eyes may need a lower power IOL
- Describe why shorter than average eyes may need a higher power IOL
- List the parts to the A Scan machine
- Describe the steps to use to take an A Scan measurement
- Describe how comparing anterior chamber depth can help with error tracking
- Describe how evaluating spike height can help with error tracking
- Describe the gain level and how it affects the A Scan graph
- List 2 methods of performing non contact axial length measurements
- Identify 2 types of scleral shells
- Describe the spike pattern on an immersion A Scan
- Explain how the double cornea spike is helpful in error tracking
- List the steps to follow to perform immersion A Scan biometry
- List 2 drawbacks to the IOL master
- Name 5 IOL formulas
Here is what some ophthalmic personnel who took this course had to say:
"Great & very relevent refresher information" D.A., COT
"A lot of clear precise information" J.M., COT
"this couse is a great method to maintain and/or acheive the skills needed to perform these procedures introduced thru this course" W.R., COT
"Great Course!" S.A., COMT
"Very easy to follow" M.K., COA
"Well explained" M.H.
"Very good review of important material" H.M.
"Good information, well organized" S.B. COT
"excellent course, thank you!" P.O. COA
This course should take approximately one hour to complete.
You must correctly answer at least 18 of the 22 questions on the open book post test to earn JCAHPO credit. If you do not successfully pass the post test the first time you may try again at no expense to you.