{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,3]],"date-time":"2026-08-03T20:14:07Z","timestamp":1785788047900,"version":"3.56.0"},"reference-count":24,"publisher":"SAGE Publications","issue":"6","license":[{"start":{"date-parts":[[2021,5,31]],"date-time":"2021-05-31T00:00:00Z","timestamp":1622419200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["European Journal of Ophthalmology"],"published-print":{"date-parts":[[2021,11]]},"abstract":"<jats:sec>\n                    <jats:title>Objective:<\/jats:title>\n                    <jats:p>Evaluation of central corneal densitometry changes following Ferrara corneal ring segment implantation in patients with keratoconus, especially the correlation between corneal densitometry and keratometry.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>Retrospective, non-comparative, interventional study based on the review of medical records of patients diagnosed with keratoconus who underwent Ferrara corneal ring segment implantation. Pre and post-operative corneal densitometry measurements obtained with Pentacam HR (Oculus, Wetzlar, Germany) were analyzed. The follow-up time was 3\u2009months, and data comparison was made, using specific statistical analysis, with the data of 3\u2009months postoperatively.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>The study sample consisted of 43 eyes of 36 patients. The mean corrected visual acuity improved from 0.82\u2009LogMAR preoperatively (SD\u2009\u00b1\u20090.33) to 0.19\u2009LogMAR (SD\u2009\u00b1\u20090.13) postoperatively. The mean spherical equivalent varied from \u22124.63 (SD\u2009\u00b1\u20093.94) preoperatively to \u22122.16 (SD\u2009\u00b1\u20092.63) postoperatively. Asphericity varied from \u22120.69 (SD\u2009\u00b1\u20090.32) preoperatively to \u22120.27 (SD\u2009\u00b1\u20090.31) postoperatively. The mean maximum K was 54.01D (SD\u2009\u00b1\u20093.38) preoperatively and 51.50D (SD\u2009\u00b1\u20092.90) postoperatively. The mean anterior densitometric value was 18.26 (SD\u2009\u00b1\u20092.03) preoperatively and 17.66 (SD\u2009\u00b1\u20091.84) postoperatively.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Corneal densitometry is an interesting technology that should be studied in keratoconus patients. Our results suggest that the corneal densitometry in the cornea\u2019s anterior layer reduces after ICRS implantation and correlates with corneal keratometry. Further studies should be performed to increase the knowledge in this field.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/11206721211020631","type":"journal-article","created":{"date-parts":[[2021,6,1]],"date-time":"2021-06-01T01:05:10Z","timestamp":1622509510000},"page":"3505-3510","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":11,"title":["Corneal densitometry in patients with keratoconus undergoing intrastromal Ferrara ring implantation"],"prefix":"10.1177","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3665-6522","authenticated-orcid":false,"given":"Pablo Felipe","family":"Rodrigues","sequence":"first","affiliation":[{"name":"Escola Paulista de Medicina, Universidade Federal de S\u00e3o Paulo \u2013 UNIFESP, S\u00e3o Paulo, Brazil"},{"name":"Instituto Suel Abujamra, S\u00e3o Paulo, 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