FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2049205867> ?p ?o ?g. }

• W2049205867 endingPage "372" @default.
• W2049205867 startingPage "371" @default.
• W2049205867 abstract "There are two kinds of light—the glow that illuminates and the glare that obscures. James Thurber One of the most vexing symptoms that can affect patients following modern cataract surgery is dysphotopsia. This photic phenomenon, which occurs in pseudophakic patients, has many different forms. So-called positive dysphotopsia is usually noted as phenomena such as light rings, arcs, streaks, flashes, and halos that may interfere with vision. These images are noted near the central axis of vision and can be induced by peripheral light sources. Positive dysphotopsia is usually related to bright artifacts of light on the retina. Tester et al.1 used the term dysphotopsia to describe the visual phenomena encountered by phakic and pseudophakic patients, including flashes of light, glare, and light sensitivity. Negative dysphotopsia involves the blockage of light from certain portions of the retina and is manifested by a dark crescent or curved shadow that can appear similar to a scotoma in the peripheral temporal field of vision. The exact etiology of negative dysphotopsia remains an enigma. Osher2 postulates that negative dysphotopsia symptoms occurring relatively soon after cataract surgery and disappearing after the first few weeks may be associated with edema of the clear corneal incisions. Davison3 describes the phenomenon of a temporal dark shadow in the patient's vision, which is called a negative dysphotopsia. Although these symptoms were initially reported in eyes with a high-refractive-index hydrophobic acrylic intraocular lens (IOL) with sharp optic edges, they have now been reported with many IOL materials and designs, including 3-piece silicone IOLs and hydrophilic acrylic IOLs. The question of why this dark shadow of light occurs temporally is likely because the nasal retina may extend farther anteriorly than the temporal retina as well as because light coming in nasally may be somewhat tempered by the nose, eyebrow, and cheek. However, light coming from the temporal side of the eye that projects to the nasal-most retina may be deflected by the edge of the IOL or even reflected internally by the relatively square edge of an IOL away from the nasal retina. This results in a crescent-shaped shadow noted in the temporal field of vision. The incidence of serious negative dysphotopsia varies, but in most studies it is relatively small. Davison3 reports an incidence of 0.2% in a large series of patients with truncated acrylic optic IOLs. Osher2 reports an incidence of 15.2% on the first postoperative day, which decreased to 2.4% after 2 years. However, he found that the symptoms were not disturbing enough to necessitate IOL exchange. Several remedies have been suggested for negative dysphotopsia symptoms that become severe and do not decrease over time.4,5 Intraocular lens exchange with a round-edged IOL inserted into the capsular bag or the ciliary sulcus has been advocated by many surgeons who have dealt with this problem. Other options include prolapsing the optic into the ciliary sulcus or implanting a piggyback IOL in the ciliary sulcus. This would theoretically decrease the distance between the iris plane and the IOL, which might decrease the negative dysphotopsia symptoms. In this issue, Vámosi et al. (pages 418–424) present the results of a study of IOL exchange in patients with severe negative dysphotopsia. The incidence of this in the pseudophakic patient population was 0.13%—5 eyes in 4 patients out of 3806 routine cataract procedures. The symptoms were related to a hydrophobic acrylic IOL in 2 of the eyes, but in the other 3 eyes, they were associated with a hydrophilic acrylic IOL. In all the patients, the IOLs were noted to be well-centered and the optic fully covered by the anterior lens capsule. Using ultrasound biomicroscopy, Vámosi et al. evaluated the difference in the iris-to-optic distance in the patients who were symptomatic and in a nonsymptomatic control group. The difference was not statistically significant; however, in the patient in whom the secondary IOL was initially left in the capsular bag, the symptoms persisted, whereas in patients in whom the secondary IOL was placed in the ciliary sulcus, the symptoms resolved. The reduction of the iris–IOL distance following IOL exchange seemed to be related to resolution of the severe negative dysphotopsia symptoms. Negative dysphotopsia may be a more common problem than initially realized. If patients are questioned about symptoms, postoperative negative dysphotopsia may be mentioned relatively frequently. However, the symptoms mentioned in questionnaires tend to be very mild or moderate and generally decrease over time; they are often not disturbing to patients. Significant negative dysphotopsia symptoms have now been reported with virtually all IOL materials, and while the incidence appears to be more significant with square-edged, high-refractive-index IOLs, the symptoms have been reported with IOLs with various optic-edge designs. Other factors that may be related include axial length, anterior chamber depth, and distance from the iris to the IOL optic. Finally, some patients may be particularly vulnerable or particularly sensitive to dysphotopsia and may require additional surgical treatment. Despite many years of study and discussion, the issue of negative dysphotopsia remains an enigma." @default.
• W2049205867 created "2016-06-24" @default.
• W2049205867 creator A5076689211 @default.
• W2049205867 date "2010-03-01" @default.
• W2049205867 modified "2023-10-13" @default.
• W2049205867 title "Negative dysphotopsia following cataract surgery" @default.
• W2049205867 cites W2105200440 @default.
• W2049205867 cites W2122235254 @default.
• W2049205867 cites W2172287169 @default.
• W2049205867 doi "https://doi.org/10.1016/j.jcrs.2010.01.001" @default.
• W2049205867 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/20202530" @default.
• W2049205867 hasPublicationYear "2010" @default.
• W2049205867 type Work @default.
• W2049205867 sameAs 2049205867 @default.
• W2049205867 citedByCount "7" @default.
• W2049205867 countsByYear W20492058672012 @default.
• W2049205867 countsByYear W20492058672015 @default.
• W2049205867 countsByYear W20492058672016 @default.
• W2049205867 countsByYear W20492058672017 @default.
• W2049205867 countsByYear W20492058672018 @default.
• W2049205867 countsByYear W20492058672020 @default.
• W2049205867 countsByYear W20492058672021 @default.
• W2049205867 crossrefType "journal-article" @default.
• W2049205867 hasAuthorship W2049205867A5076689211 @default.
• W2049205867 hasBestOaLocation W20492058671 @default.
• W2049205867 hasConcept C117797892 @default.
• W2049205867 hasConcept C118487528 @default.
• W2049205867 hasConcept C119767625 @default.
• W2049205867 hasConcept C120665830 @default.
• W2049205867 hasConcept C121332964 @default.
• W2049205867 hasConcept C15744967 @default.
• W2049205867 hasConcept C178790620 @default.
• W2049205867 hasConcept C185592680 @default.
• W2049205867 hasConcept C194130854 @default.
• W2049205867 hasConcept C2776058522 @default.
• W2049205867 hasConcept C2777394604 @default.
• W2049205867 hasConcept C2779227376 @default.
• W2049205867 hasConcept C2779567214 @default.
• W2049205867 hasConcept C542102704 @default.
• W2049205867 hasConcept C64731932 @default.
• W2049205867 hasConcept C71924100 @default.
• W2049205867 hasConceptScore W2049205867C117797892 @default.
• W2049205867 hasConceptScore W2049205867C118487528 @default.
• W2049205867 hasConceptScore W2049205867C119767625 @default.
• W2049205867 hasConceptScore W2049205867C120665830 @default.
• W2049205867 hasConceptScore W2049205867C121332964 @default.
• W2049205867 hasConceptScore W2049205867C15744967 @default.
• W2049205867 hasConceptScore W2049205867C178790620 @default.
• W2049205867 hasConceptScore W2049205867C185592680 @default.
• W2049205867 hasConceptScore W2049205867C194130854 @default.
• W2049205867 hasConceptScore W2049205867C2776058522 @default.
• W2049205867 hasConceptScore W2049205867C2777394604 @default.
• W2049205867 hasConceptScore W2049205867C2779227376 @default.
• W2049205867 hasConceptScore W2049205867C2779567214 @default.
• W2049205867 hasConceptScore W2049205867C542102704 @default.
• W2049205867 hasConceptScore W2049205867C64731932 @default.
• W2049205867 hasConceptScore W2049205867C71924100 @default.
• W2049205867 hasIssue "3" @default.
• W2049205867 hasLocation W20492058671 @default.
• W2049205867 hasLocation W20492058672 @default.
• W2049205867 hasLocation W20492058673 @default.
• W2049205867 hasOpenAccess W2049205867 @default.
• W2049205867 hasPrimaryLocation W20492058671 @default.
• W2049205867 hasRelatedWork W1971668880 @default.
• W2049205867 hasRelatedWork W1991758479 @default.
• W2049205867 hasRelatedWork W199735706 @default.
• W2049205867 hasRelatedWork W2019616934 @default.
• W2049205867 hasRelatedWork W2055804029 @default.
• W2049205867 hasRelatedWork W2078011147 @default.
• W2049205867 hasRelatedWork W2086588818 @default.
• W2049205867 hasRelatedWork W2112008555 @default.
• W2049205867 hasRelatedWork W2185387169 @default.
• W2049205867 hasRelatedWork W4248539293 @default.
• W2049205867 hasVolume "36" @default.
• W2049205867 isParatext "false" @default.
• W2049205867 isRetracted "false" @default.
• W2049205867 magId "2049205867" @default.
• W2049205867 workType "article" @default.