{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,31]],"date-time":"2026-10-31T08:51:01Z","timestamp":1793436661784,"version":"4.5.0"},"reference-count":23,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"Suppl 2","content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2024,2]]},"abstract":"<jats:sec>\n                    <jats:title>Purpose:<\/jats:title>\n                    <jats:p>To assess the photic phenomena (PP) and positive dysphotopsia in candidates for presbyopia or cataract surgery and to evaluate their relationship with cataract grading systems.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Design:<\/jats:title>\n                    <jats:p>Retrospective observational.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>Monocular data for 82 subjects measured during the preoperative screening were retrospectively retrieved from our database. The evaluated variables consisted of two methods for PP measurement: light distortion index (LDI) and parameters obtained from a simulator, both of which were combined with subjective bother related to PP. The cutoff for LDI that better predicted patients passing from slightly to moderately bothersome was estimated. The relationships between LDI and the following objective cataract grading methods were also assessed: objective scatter index (OSI), dysfunctional lens index (DLI), and Pentacam Nucleus Staging (PNS).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>\n                      LDI was the best method for measuring PP, which showed a significant correlation with the bothersome question (rho = 0.34,\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.002) and also with OSI (rho = 0.67,\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.0005), DLI (rho = \u22120.29,\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.007), and PNS (rho = 0.48,\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.0005). The number\/percentage of patients who found it bothersome was as follows: \u201cNot at all\u201d (18\/22%), \u201cSlightly\u201d (41\/50%), \u201cModerately\u201d (15\/18.3%), and \u201cVery\u201d (8\/9.7%). The cutoff value that predicted the transition from slightly to moderately bothersome was \u226515.20% according to LDI, which could be estimated with the following values for grading: \u22652.8 for OSI, \u22647.6 for DLI, and \u22652 for PNS.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions:<\/jats:title>\n                    <jats:p>Patients reporting moderately or higher bothersome levels in the preoperative period and with LDI &lt;15.20%, &lt;2.8 for OSI, &gt;7.6 for DLI, and &lt;2 for PNS might deserve special attention in the multifocal intraocular lens selection.<\/jats:p>\n                  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Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carlos","family":"Rocha-de-Lossada","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, VITHAS Almer\u00eda Hospital, Qvision, 04120, Almer\u00eda, Spain"},{"name":"Ophthalmology Department, VITHAS M\u00e1laga, 29016 M\u00e1laga, Spain"},{"name":"Hospital Regional Universitario de M\u00e1laga, Plaza del Hospital Civil, Spain"},{"name":"Departamento de Cirug\u00eda, Universidad de Sevilla, \u00c1rea de Oftalmolog\u00eda, Doctor Fedriani, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Francisco","family":"Zamorano-Mart\u00edn","sequence":"additional","affiliation":[{"name":"Hospital Regional Universitario de M\u00e1laga, Plaza del Hospital Civil, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Manuel","family":"Rodr\u00edguez-Vallejo","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, VITHAS Almer\u00eda Hospital, 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