{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,3]],"date-time":"2026-11-03T00:34:03Z","timestamp":1793666043346,"version":"4.5.1"},"reference-count":19,"publisher":"SLACK, Inc.","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Ophthalmic Surg Lasers Imaging Retina"],"published-print":{"date-parts":[[2010,3]]},"abstract":"<jats:sec>\n            <jats:title>BACKGROUND AND OBJECTIVE:<\/jats:title>\n            <jats:p>To evaluate the amount of ultrasound energy used, corneal endothelial cell loss, and central corneal thickness using the phaco-chop and stop-and-chop techniques for cataracts with different degrees of nuclear density.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>PATIENTS AND METHODS:<\/jats:title>\n            <jats:p>One hundred two eyes of 51 patients with bilateral senile cataract were included. Each eye was randomly assigned to have either phaco-chop or stop-and-chop nucleofractis during phacoemulsification. The groups were divided into two subgroups according to the nuclear density. The effective phacoemulsification time, endothelial cell density, and central corneal thickness were analyzed.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>RESULTS:<\/jats:title>\n            <jats:p>\n              The mean effective phacoemulsification time was similar between the groups in moderately dense nuclei (2.17 \u00b1 1.33 vs 1.33 \u00b1 1.05 seconds;\n              <jats:italic>P<\/jats:italic>\n              = .41). However, the phaco-chop technique required less effective phacoemulsification time than the stop-and-chop technique in dense nuclei (3.86 \u00b1 4.18 vs 6.70 \u00b1 5.43 seconds;\n              <jats:italic>P<\/jats:italic>\n              = .01). The endothelial cell loss and the central corneal thickness did not vary significantly between the groups.\n            <\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>CONCLUSION:<\/jats:title>\n            <jats:p>The phaco-chop technique requires lower ultrasound energy for nuclear management than the stop-and-chop technique in dense cataracts and the resulting endothelial loss was similar in both techniques.<\/jats:p>\n            <jats:p>\n              <jats:bold>[Ophthalmic Surg Lasers Imaging 2010;41:236\u2013241.]<\/jats:bold>\n            <\/jats:p>\n          <\/jats:sec>","DOI":"10.3928\/15428877-20100303-13","type":"journal-article","created":{"date-parts":[[2010,3,22]],"date-time":"2010-03-22T15:56:41Z","timestamp":1269273401000},"page":"236-241","source":"Crossref","is-referenced-by-count":28,"title":["Ultrasound Energy in Phacoemulsification: A Comparative Analysis of Phaco-Chop and Stop-and-Chop Techniques According to the Degree of Nuclear Density"],"prefix":"10.3928","volume":"41","author":[{"given":"Jung Hyun","family":"Park","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sang Mok","family":"Lee","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ji-Won","family":"Kwon","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mee Kum","family":"Kim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joon Young","family":"Hyon","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Won Ryang","family":"Wee","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jin Hak","family":"Lee","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Young Keun","family":"Han","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2308","reference":[{"key":"e_1_3_1_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0039-6257(99)00085-5"},{"key":"e_1_3_1_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0886-3350(00)00538-1"},{"key":"e_1_3_1_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0886-3350(00)00834-8"},{"key":"e_1_3_1_5_2","doi-asserted-by":"publisher","DOI":"10.1097\/00055735-199402000-00007"},{"key":"e_1_3_1_6_2","volume-title":"Mastering Phacoemulsification: A Simplified Manual of Strategies for the Spring, Crack and Stop & Chop Technique","author":"Koch PS","year":"1994","unstructured":"Koch PS. Mastering Phacoemulsification: A Simplified Manual of Strategies for the Spring, Crack and Stop & Chop Technique, 4th ed. 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