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Straylight in posterior polar cataract
摘要： To study straylight before and after posterior polar cataract removal. Patients diagnosed with posterior polar cataract who agreed to cataract surgery were included in the study. Intraocular straylight was measured before and after surgery with the compensation comparison method using a straylight meter (C-Quant). Measurements were performed on 8 eyes of 4 patients. The mean preoperative corrected distance visual acuity was relatively good (0.15 logarithm of the minimum angle of resolution [logMAR] G 0.18 (SD). The mean postoperative CDVA was (cid:1)0.08 G 0.09 logMAR (P < .01). The mean preoperative straylight was extreme (2.01 G 0.38 log[s]), 13 times that of a young normal eye; however, it improved postoperatively to 1.04 G 0.26 log(s) (P < .01). Straylight in eyes with posterior polar cataract patients can be extremely bothersome, while visual acuity is relatively well preserved. Surgery was effective in lowering straylight levels. For these patients, straylight measurements can help objectively measure the quality of vision complaints, and elevated straylight levels can be an indication for surgery independent of visual acuity.
关键词： visual acuity,straylight,posterior polar cataract,quality of vision,cataract surgery
更新于2025-09-09 09:28:46
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Comparison of Intraocular Straylight in Patients with Clear and Photochromic Intraocular Lenses
摘要： Purpose: To compare visual acuity and intraocular straylight after implantation of clear and photochromic intraocular lenses (IOLs) in a mesopic lighting condition. Methods: Clear IOLs were implanted in 95 eyes of 72 patients (clear IOL group), and photochromic IOLs were implanted in 22 eyes of 16 patients (photochromic IOL group). Best-corrected visual acuity (BCVA) was measured indoors before surgery and 1 month after surgery. Straylight values were measured indoors before surgery and 1 and 2 months after surgery using the C-quant straylight meter (Oculus GmbH, Wetzlar, Germany). Results: There were no significant differences between the 2 groups in BCVA at 1 month postoperatively (p = 0.587). Mean straylight values of clear and photochromic IOL groups were 2.76 ± 1.89 log (s) and 2.88 ± 2.04 log (s) preoperatively, 1.39 ± 0.84 log (s) and 1.32 ± 0.26 log (s) at 1 month postoperatively, and 1.43 ± 0.92 log (s) and 1.45 ± 0.50 log (s) at 2 months postoperatively. There were no significant differences between the 2 groups in indoor straylight values (p = 0.778, 0.709, 0.929, before surgery, 1 and 2 months after surgery respectively). Repeated-measure analysis of straylight values also showed no significant difference between the 2 groups (p > 0.05). Conclusions: There were no significant differences in BCVA and straylight values between clear and photochromic IOL groups under a mesopic light condition. Therefore, photochromic IOL could be suitable choice for cataract patients who spend significant time under mesopic conditions.
关键词： C-quant,Photochromic intraocular lens,Blue light,Straylight,Mesopic
更新于2025-09-09 09:28:46
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Effect of Glistening-Free Intraocular Lens on Intraocular Straylight
摘要： Purpose: To compare intraocular straylight between glistening-free and conventional intraocular lenses in pseudophakic eyes. Methods: Straylight values were measured prospectively in 21 eyes with glistening-free pseudophakic lenses (group A, model enVista?, Bausch & Lomb, Inc., USA) and 79 eyes with conventional hydrophilic pseudophakic lenses (group B, model Akreos MI-60, Bausch & Lomb, Inc., USA). Best corrected visual acuity (BCVA) and straylight were measured preoperatively and 1 month and 2 months postoperatively using C-quant straylight meter (Oculus GmbH, Wetzlar, Germany). Results: There were no statistically significant differences of BCVA preoperatively or 2 months postoperatively between the 2 groups (p > 0.05). BCVA and straylight significantly improved after the operation (p < 0.05). The mean straylight values were 1.43 ± 0.12 (log[s]) and 1.41 ± 0.16 (log[s]) for group A, and 1.33 ± 0.61 (log[s]) and 1.40 ± 0.82 (log[s]) for group B at postoperative 1 month and 2 months, respectively, with no statistical significance between the 2 groups (p > 0.05). Conclusions: In terms of straylight, glistening-free intraocular lenses were not beneficial. Although straylight was not statistically significant, other correlations between glistening and visual function should be investigated.
关键词： Light scattering,Glistening,Straylight
更新于2025-09-09 09:28:46