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http://www.caregroupindia.com/acridiff.pdf
. Revised 17 Aug 2011. Accessed 27 Mar 2014.
2. VSY Biotechnology.
http://www.vsybiotechnology.com/Products/Intraocular-Lenses/IOL-Type/Multifocal/Clear/AcrivaUD-Reviol-MF-613.aspx
. Copyright 2009 VSY Biyoteknoloji ve İlaç San. A.Ş. Accessed 27 Mar 2014.
3. VSY Biotechnology.
http://www.vsybiotechnology.com/Products/Intraocular-Lenses/IOL-Type/Multifocal/Blue-Filter/BB-MF-613.aspx
. Copyright 2009 VSY Biyoteknoloji ve İlaç San. A.Ş. Accessed 27 Mar 2014.
4. VSY Biotechnology.
http://www.vsybiotechnology.com/Products/Intraocular-Lenses/IOL-Type/Multifocal/Clear/AcrivaUD-Reviol-MFB-625.aspx
. Copyright 2009 VSY Biyoteknoloji ve İlaç San. A.Ş. Accessed 27 Mar 2014.
5. VSY Biotechnology.
http://www.vsybiotechnology.com/Products/Intraocular-Lenses/IOL-Type/Multifocal/Clear/AcrivaUD-Reviol-MFM-611.aspx
. Copyright 2009 VSY Biyoteknoloji ve İlaç San. A.Ş. Accessed 27 Mar 2014.