Impact of cone base diameter on outcomes of deep anterior lamellar keratoplasty in keratoconus

Zheng, Qinxiang; Li, Saiqing; Ren, Yueping; Chen, Yunyun; Wang, Haiou; Zhao, Jiawei; Chen, Jiaojie; Jhanji, Vishal; Chen, Wei

doi:10.1007/s00417-022-05658-x

Cited by 1 publication

(1 citation statement)

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“…In previous studies, the effect of preoperative K mean , BCVA, CT, and spherical equivalent values on postoperative BCVA after DALK surgery could not be demonstrated. 2,9 In another study by Feizi and Javadi, 10 the postoperative K mean was found to be associated with the preoperative K mean . The authors attributed this result to the fact that DALK is a lamellar surgery and the graft adapts to the curvature of the recipient cornea.…”

Section: Discussionmentioning

confidence: 90%

Effect of Keratoconus Stage and Classification Parameters on Deep Anterior Lamellar Keratoplasty Outcomes

Kemer Atik,

Emul,

Kirgiz

et al. 2023

Cornea

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Purpose: The aim of this study was to investigate the effect of the keratoconus (KC) stage according to the Amsler–Krumeich classification system and the parameters used in this classification on deep anterior lamellar keratoplasty outcomes. Methods: The preoperative KC stage was determined, and the presence of corneal scarring was noted. The preoperative and postoperative best-corrected visual acuity (BCVA), refractive error, mean central keratometry (Kmean) readings, topographic astigmatism, and minimum corneal thickness (CT) values were recorded. Intraoperative and postoperative complications were also noted. Results: One hundred thirty-seven eyes (54 eyes in stage 3–83 eyes in stage 4) were included in the study. The mean follow-up period was 42.20 ± 24.36 months. There was no statistically significant difference between stage 3 and 4 KC groups for postoperative BCVA, Kmean, CT, spherical equivalent, and topographic astigmatism values (each P value >0.05). The effect of preoperative BCVA, Kmean, CT, and refractive error values on postoperative BCVA could not be demonstrated (P = 0.264). In addition, no statistically significant correlation was found between postoperative and preoperative values (each P value > 0.05). Although intraoperative Descemet membrane perforation and postoperative early suture loosening were observed more frequently in stage 4 KC than in stage 3 KC, the 2 groups were statistically similar for these and other complications (each P value >0.05). Conclusions: The preoperative KC stage and the parameters used in classification are not useful in predicting postoperative deep anterior lamellar keratoplasty outcomes. The timing of the surgery should be planned with the awareness that the progression of the disease will not have a negative effect on outcomes.

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Section: Discussionmentioning

confidence: 90%