The Netherlands Academy of Arts and Sciences has a proprietary interest in the C-Quant Straylight meter. No author has a financial or proprietary interest in any material or method mentioned.
To evaluate the quality of vision (visual acuity and straylight) in patients with Fuchs dystrophy and the improvement in visual quality after Descemet stripping endothelial keratoplasty (DSEK). Methods: There was an observational case series (Amsterdam group) and a prospective interventional case series (Mayo group). Corrected distance visual acuity (CDVA), straylight, and corneal thickness were measured in patients with phakic and pseudophakic eyes with Fuchs dystrophy recruited at the Academic Medical Center, Amsterdam, the Netherlands (99 eyes), and at Mayo Clinic, Rochester, Minnesota (48 eyes). The Mayo group was also examined at 1, 3, 6, and 12 months after DSEK; all these eyes were rendered pseudophakic during DSEK. Results: Eyes with Fuchs dystrophy had decreased CDVA (mean [SD], 0.42 [0.26] logMAR; Snellen equivalent 20/ 53) and increased straylight (mean [SD], 1.54 [0.24] logarithm of the straylight parameter) compared with normal eyes. Younger patients were affected more by increased straylight than by decreased CDVA. Corrected distance visual acuity (r=0.26; P =.003; n=135) and straylight (r = 0.26; P = .003; n = 133) were correlated with corneal thickness. Corrected distance visual acuity and straylight improved at all postoperative examinations (PϽ.001), and improvement in straylight from before DSEK to 12 months after DSEK correlated with recipient age (r =−0.43; P =.01; n=33). Improvement in straylight was more predictable than that of CDVA and was associated with preoperative straylight more than 1.33 logarithm of the straylight parameter. Conclusions: Quality of vision is severely impaired in patients with Fuchs dystrophy and improves significantly after DSEK. Straylight improves more in younger than in older eyes after DSEK. Preoperative straylight can be a useful clinical metric to predict postoperative improvement, especially in cases where preoperative visual acuity is close to 20/20.
We describe the case of an 83-year-old woman who had uneventful phacoemulsification with implantation of a tripod hydrophilic acrylic intraocular lens (IOL). Because of postoperative corneal decompensation, 2 Descemet-stripping endothelial keratoplasty (DSEK) procedures were performed within 2 years. After the second procedure, the graft was not well attached, requiring an intracameral injection of air on day 3. Approximately 9 months later, opacification was observed on the anterior surface of the IOL, with a significant decrease in visual acuity. The IOL was explanted within the capsular bag. Laboratory analyses revealed granular deposits densely distributed in a round pattern within the margins of the capsulorhexis. Granules were located at the anterior surface/subsurface of the IOL and stained positive for calcium (alizarin red and von Kossa method). Scheimpflug photography revealed high levels of light scattering from the opacified area. Surgeons should be aware of possible localized calcification following DSEK procedures in pseudophakic patients with hydrophilic acrylic IOLs.
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