SIA Soft :
Software for Surgically Induced Astigmatism

SIASOft is to calculate Surgically Induced Astigmatism by  “ GOLD Standard” Vector Method for Single as well as for Multiple Patients. It also separately Calculates the ‘ Angle of Error’ which is induced by the surgeon during any Cataract-refractive surgery.

Surgically induced astigmatism (SIA) is not just the simple arithmetic subtraction of K-values before and after operation. It involves the vector change ie, having a magnitude as well as direction which involves little bit of trigonometry. For every Ophthalmologist, it is not possible to go back to 12th standard mathematical knowledge and calculate SIA. It is also difficult to perform simultaneous calculation for large number of patients, though it is mathematically possible and requires plenty of time.

On the contrary, analysis of SIA allows the surgeon to evaluate his own technique and Also to maximize his potential for obtaining consistently good  surgical outcome. It further allows the surgeon to choose the right axis, right length, right site and right nature of incision. This is especially important while planning for correction of pre-existing corneal astigmatism during any type of cataract surgery- whether Manual SICS or phacoemulsification.

SIA-Soft can handle single as well as unlimited number of patients and surgeons with simultaneous calculation of mean and standard deviation which only requires clicking the buttons.


SIA Soft : How to get Started

System Requirement
SIA- Soft runs on any IBM Campatible PC with 128 MB RAM-running Windows 98, 2000 and XP. The recommended minimum resolution is of 1024 X 768 pixels for Optimal Visualization.

Installation
1. After downloading the Zipfile double click on the "File".
2. Run the SETUP.EXE file.
3. Follow the instruction given by the software during installation.
4. Click on the ICON - "install all files for SIA-SOFT."

To Start

  • Click the SIA-Soft in the programs menu.
  • If you are first time user then click Tutorial in the help menu. The tutorial is an animated film.
  • First enter the surgeon name in the surgeon entry screen.
  • To obtain surgically induced astigmatism click on SIA in System menu.
  • To obtain surgically induced astigmatism and angle of error click on SIA & intended angle of correction in System menu.
  • The data is stored automatically when you exit from the software
For further information regarding the SIA Soft, contact

Dr. Samar K Basak,
Email: basak_sk@hotmail.com
disha@cal2.vsnl.net.in


   Disclaimer : This website is maintained by Dr. Lalit Verma on behalf of All India Ophthalmological Society