{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,11]],"date-time":"2026-09-11T01:55:51Z","timestamp":1789091751100,"version":"build-2803163510"},"reference-count":48,"publisher":"Hindawi Limited","license":[{"start":{"date-parts":[[2015,1,1]],"date-time":"2015-01-01T00:00:00Z","timestamp":1420070400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Ophthalmology"],"published-print":{"date-parts":[[2015]]},"abstract":"<jats:p>We evaluate the efficacy and safety of Keraring 355\u00b0 intrastromal corneal ring segment (ICRS) implantation aided by PocketMaker microkeratome for the correction of keratoconus. Patients underwent ICRS insertion using mechanical dissection with PocketMaker microkeratome and completed 6 months of follow-up. Uncorrected visual acuity (UCVA), best spectacle-corrected visual acuity (BSCVA), refraction, topographic findings, safety, efficacy index, and adverse events were reported for six months postoperatively. We evaluated 15 eyes of 15 patients (12 men) with a mean age of 28.87 \u00b1 6.94 years (range 21\u201349 years). At final postoperative examination, there was a statistically significant reduction in the spherical equivalent refractive error compared to preoperative measurements (\u22125.46 \u00b1 1.52 to \u22122.01 \u00b1 1.63\u2009D,<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M1\"><mml:mi>P<\/mml:mi><mml:mo>&lt;<\/mml:mo><mml:mn>0.001<\/mml:mn><\/mml:math>). Mean preoperative UCVA (logMAR) before implantation was 0.79 \u00b1 0.48, and postoperative UCVA was 0.28 \u00b1 0.15,<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M2\"><mml:mi>P<\/mml:mi><mml:mo>=<\/mml:mo><mml:mn>0.001<\/mml:mn><\/mml:math>. Mean preoperative BSCVA (logMAR) before implantation was 0.36 \u00b1 0.21; at final follow-up examination BSCVA was 0.18 \u00b1 0.9,<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M3\"><mml:mi>P<\/mml:mi><mml:mo>=<\/mml:mo><mml:mn>0.009<\/mml:mn><\/mml:math>. Mean<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M4\"><mml:mrow><mml:mi>K<\/mml:mi><\/mml:mrow><\/mml:math>decreased from 48.33 to 43.31\u2009D,<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M5\"><mml:mi>P<\/mml:mi><mml:mo>&lt;<\/mml:mo><mml:mn>0.001<\/mml:mn><\/mml:math>. All patients were satisfied with ICRS implantation; 86.7% were moderately to very happy with the results. No intraoperative or postoperative complications were demonstrated. This preliminary study shows that ICRS (Keraring 355\u00b0) implantation is an efficient, cost-effective, and minimally invasive procedure for improving visual acuity in nipple type keratoconic corneas.<\/jats:p>","DOI":"10.1155\/2015\/916385","type":"journal-article","created":{"date-parts":[[2015,1,5]],"date-time":"2015-01-05T21:47:50Z","timestamp":1420494470000},"page":"1-8","source":"Crossref","is-referenced-by-count":34,"title":["Intrastromal Corneal Ring Segment Implantation (Keraring 355\u00b0) in Patients with Central Keratoconus: 6-Month Follow-Up"],"prefix":"10.1155","volume":"2015","author":[{"given":"Khosrow","family":"Jadidi","sequence":"first","affiliation":[{"name":"Department of Ophthalmology, Bina Eye Hospital Research Center, Tehran 1914853184, Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Seyed Aliasghar","family":"Mosavi","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, Bina Eye Hospital Research Center, Tehran 1914853184, Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Farhad","family":"Nejat","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, Bina Eye Hospital Research Center, Tehran 1914853184, Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mostafa","family":"Naderi","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, Bina Eye Hospital Research Center, Tehran 1914853184, Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leila","family":"Janani","sequence":"additional","affiliation":[{"name":"Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences (TUMS), Tehran, Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sara","family":"Serahati","sequence":"additional","affiliation":[{"name":"Department of Biostatistics, University of Social Welfare and Rehabilitation Sciences, Tehran, 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