1.1.- Create a Subject

Subjects Layout -> Press over top plus button -> Introduce a pseudoidentifier -> Press Save button The first step to use BigSIA is to insert the patient that will be operated on by means a pseudoidentifier. This is a number that identifies the subject in such a way only you will...

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1.2.- Select subject data (optional)

Subjects Layout -> Press over the subject -> Select the variable to add -> Select the value for the variable -> Press save BigSIA allows you to save specific data of a subject in order to build prediction models outside the App. For parameters related with the eye, only...

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1.3.- Create an exam and assign a protocol

Subject Layout -> Press over + (new exam) -> Press over + (new protocol) -> Insert a protocol name and select settings -> Press save Once you have the subject you can start to insert Exams, a subject can have as many exams as protocols created. A protocol is an uniform way...

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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: What...

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1.5.- Insert Corneal Power

Subject Layout -> Press over PREOP -> Select flat and steep meridian powers and axes -> Press save -> Repeat for POSTOP Select the corneal power measured at the flat and steep meridians (orthogonals) for the preoperative and postoperative follow-up. Once both have been...

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1.6.- Check results

Statistics Layout -> Select a Protocol -> Press over filter -> See the results Once you have the exam inserted for an specific protocol you can go to the Statistics Layout in order to see the surgically induced astigmatism over the double angle plot. In this case you can...

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