Clinical Skills Certificate Course:
A-scan Ultrasonography (Biometry)
This course is intended for ophthalmic assistants, technicians and technologists.
Course structure (no CE credit):
This course consists of short, illustrated reading segments. There is a quiz at the end of the course. Upon passing the quiz, the user will receive a certificate of completion.
Estimated time to complete:
Short Course Description:
This course on A-scan ultrasonography (Biometry) includes discussion of basic concepts, scanning procedures, instrumentation, pseudophakic A-scan instruction, immersion A-scan instruction, intraocular lens power calculations, and A-scan biometry vs. optical biometry.
For the Detailed Course Description, see below
The course can be purchased via Paypal (you don't need a Paypal account) by using the button below ($7 for 2 months access). More than one course can be purchased at the same time by going to the course catalog. Courses can also be purchased via Authorize.net from the course catalog.
After purchase, the course can be accessed immediately by using the "courses" tab on the top menu bar to link to your "my courses" page.
Detailed Course Description
Basic concepts of A-scan biometry, including:
Velocity of sound
A-scan Scanning procedures, including:
Tonometer mount method
Extra lens spikes
A-scan Instrumentation, including:
Corneal compression recognition
Foot switch operation
Pseudophakic A-scan instruction, including:
Factors to consider
Evaluating the scan
Immersion A-scan instruction, including:
The Prager shell
Intraocular Lens Power (IOL) Calculations:
Types of formulas
Theoretical, including: Holladay, Hoffer Q, Haigis
Regression formula calculations
Regression formula compensation
Regression formula table
Emmetropia and ammetropia
Post refractive surgery IOL power calculations, including the History method, and the Contact lens method
A-scan Biometry versus Optical Biometry
Includes discussion of the IOLMaster 500, Haag Streit Lenstar LS900, and IOLMaster 700