1. Spending 40 cc in an entire Cataract Surgery. Comparative study. Arturo Pèrez-Arteaga M.D. Medical Director & Founder Centro Oftalmològico Tlalnepantla, Mèxico. Poster for ASCRS, San Francisco, 2009. No Finantial Interest

2. Background  Currently Micro-Incisional Cataract Surgery Techniques are gaining field against traditional ones.  Both, Micro-Coaxial & Micro-Biaxial are showing advantages in particular in fluidics.  A debate exist between promoters of each technique regarding the advantages and disadvantages.

3. Objective & Type of Study  To determine which Micro-Incisional Cataract Technique utilizes less amount of irrigation inside the eye.  Comparative, prospective, randomized study between Micro- Coaxial & Micro- Biaxial techniques.

4. Material & Methods  50 eyes of uncomplicated senile cataract were operated by the same surgeon and divided in two randomized groups.  25 were operated with Micro-Coaxial technique (1.6 mm incision); Oertli Phaco System and passive infusion.  25 were operated with Micro-Biaxial technique (0.7 mm incision); Accurus Phaco System and forced infusion.  The amount of total Intraocular Saline Solution was measured in all cases, and both groups were compared.

5. Forced Infusion Internal Forced Infusion created with the Accurus Surgical System Active irrigation through a 25G cannula

6. Results  The Micro-Coaxial group used an average of 69 cc in the entire procedure.  The Micro-Biaxial group used an average of 42 cc in the entire procedure, including I/A.

7. Results  The Micro-Incisional Technique that utilizes less amount of Intraocular Solution during the entire surgery was Micro-Coaxial  The differente has statistical significance.

8. Results Bottle starting a Micro-Biaxial case Bottle ending the same case.

9. Discussion  As much as the amount of infusion is lower in the anterior chamber, less trauma over the endothelial cells is obtained.

10. Discussion  Further studies are needed to determine the exact significance of less irrigating volume in the postoperative state of the cornea.

11. References  Agarwal A. Agarwal A. et al. Phakonit phacoemulsification trough a 0.9 mm corneal incision. J Cataract Refract. Surg. 2001;27:1548-1552.  Agarwal A. Agarwal A. et al. Phakonit: Lens removal trough a 0.9 mm incision. J Cataract Refract Surg. 2001;27:1531-1532.  Agarwal A. Agarwal S. Agarwal A. Phakonit and laser phakonit: lens removal trough a 0.9-mm incision. Phacoemulsification, laser cataract surgery and foldable IOL´s. New Delhi, India: Jaypee; 2000; 204-216.  Tsuneoka H. Shiba T.Feasibility of ultrasound cataract surgery trough a 1.4 mm incision. Journal Cataract and Refractive Surgery, 2001; 27, 934-940.  Agarwal, Amar. Bimanual 0.9 mm approach to phaco promises astigmatic neutral cataract surgery and faster rehabilitation. Eurotimes, February 2003.  Alió, Jorge. MICS ready to go. Ocular Surgery News, March, 2003.  Pérez-Arteaga, Arturo. Accurus Forced Infusión good for MICS. Ocular Surgery News, 6/15/03.  Pérez-Arteaga, Arturo. Bottle Infusión Tool of the Millennium Surgical System for Phakonit. Ocular Surgery News; 09/15/03.  Pérez-Arteaga, Arturo. Anterior Vented Gas Forced Infusion of the Accurus Surgical System for Phakonit.  J Cataract Refract Surg. April 2004.  Pèrez-Arteaga, Arturo. Step by Step to Biaxial Lens Surgery. Jaypee Bros. Publishers. India, 2008.