1.4.- Very important about protocols

There is not good analysis without reliable data and for this purpose Protocols are the Key point. A Protocol is an uniform way to act in all the cases to minimize the bias in the results. In order to design a good Protocol for organizing your data ask you the following questions:

  1. What is the eye operated on?
  2. Which procedure I have followed for the incision, femtosecond or keratome?
  3. Has been the IOL inserted preloaded?
  4. Where is the incision located?
  5. Which system / parameter I have used for measuring the corneal power?

When all the questions match for a serie of patients you have followed a Protocol, but If one answer is different between patients, you are adding noise into your data. Remember, it is the similar a small sample and reliable data than BigData with poorer reliability, if you start to do the data collection in a right way you will achieve your purpose earlier.

Here you have a sample for a protocol:

  1. What is the eye operated on? Right eye
  2. Which procedure I have followed for the incision, femtosecond or keratome? Femtosecond
  3. Has been the IOL inserted preloaded? Yes
  4. Where is the incision located? Temporal (0-180º)
  5. Which system/parameter I have used for measuring the corneal power? IOL Master 500 SimK

For this protocol I have selected the Title: RE-Femto-temp-500

SIA calculator

BigSIA

The incision that is required for IOL implantation during cataract surgery induces astigmatism —this is referred to as surgically induced astigmatism (SIA)— so the total amount of astigmatism to be corrected with the toric IOL must consider the flattening (FE) or steepening (SE) effect on the meridian of the preoperative corneal astigmatism on which the IOL is going to be aligned. The SIA will depend on several factors, including incision type, location and size, and its design or architecture. 

Join Our Facebook Group

Access to our Facebook Group to keep you up to date with the latest news or to get support

Go now!

Terms & Conditions

Review the Terms & Conditions before to use our Apps

Review now!