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to decentration from mild capsular contraction5. The singleuse polymer tip studied here was manufactured to decrease posterior capsular trauma during irrigation/aspiration and capsular polishing. Purpose To pare the safety and capsular friendliness of a new singleuse polymer irrigation/aspiration (I/A) port with a standard metal I/A port in a Miyake cadaver eye model. A. Photomicrograph (20X) of metal I/A tip used in the Pathology laboratory for research purposes. Note the small metal discontinuity on the proximal irrigation port opening that is mon to reusable metal I/A tips. B. Photomicrograph (20X) of singleuse polymer I/A tip without sleeve. Note the smooth irrigation port opening. The tip is distensible with moderate pressure, and the aspiration port edges are regular and smooth. B A Material/Methods ? One eye of each cadaver pair was treated with a standard metal I/A tip (OD) while the contralateral eye was treated with a single–use polymer I/A tip (OS). ? Nine pairs of cadaver eyes were prepared using the Miyake/Apple technique under open sky for better capsular visualization. ? Following capsulorrhexis, and nucleus expression by hydrodissection, cortex was removed by each respective I/A tip. ? The aspiration port was then occluded on the posterior capsule and swept in several 23 mm arcs in order to induce either capsular rupture or zonular dehiscence. Miyake view of posterior capsule cleaned with metal (A) or silicone polymer tip (B). Note the striae in the posterior capsule as the aspiration port is occluded and s