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. 2025 Jul 1;73(7):1079-1083.
doi: 10.4103/IJO.IJO_1452_24. Epub 2025 Jun 30.

New approaches of intracorneal ring segments implantation for asymmetric keratoconus treatment: A case series

Jordana S B Soares  1 , Bernardo Kaplan Moscovici  2   3
Affiliations

New approaches of intracorneal ring segments implantation for asymmetric keratoconus treatment: A case series

Jordana S B Soares et al. Indian J Ophthalmol. .
No abstract available

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Figures

Figure 1
Figure 1
(a) Comparison between preoperative examination imaging (left) and postoperative imaging after implantation of a 140/25 externalized ICRS (center). (b) Pentacam (Oculus, Wetzlar, Germany) tomography of ICRS localization in an externalized optical zone. (c) Comparison between the patient’s preoperative examination imaging (left), postoperative examination imaging following the implantation of a 140/25 externalized ICRS (center), and postoperative examination imaging following the implantation of a 210/25 ICRS internally concentric to the first implant (right). (d) Comparison between the patient’s coma preoperatively (left), postoperatively after implantation of a 140/25 externalized ICRS (center), and postoperatively after implantation of a 210/25 ICRS internally concentric to the first ICRS (right). Improvement in the comatic aberration is apparent. ICRS, intrastromal corneal ring segment. (e) Images from the patient’s preoperative OD examination. (f) Differential maps compare the patient’s preoperative and postoperative examinations before and after concentric ICRS implantation. (g) A comparison between the patient’s coma in the preoperative examination imaging (left) and the postoperative imaging, following implantation of a 140/25 externalized ICRS and an internally concentric 210/25 ICRS (right). Improvements in the comatic aberration are visible. ICRS, intrastromal corneal ring segment; OD, right eye. (h) Case 3 preoperative and postoperative optic imaging. (i) Four sagittal maps of an oval keratoconus from a Ferrara ring segment (Ferrara Ophthalmics, Belo Horizonte, Brazil) nomogram. (j) Positioning of a concentric ICRS, visualized using a slit lamp (right) and centered in Pentacam (Oculus, Wetzlar, Germany) tomography (left).
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References

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