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Purpose: To evaluate choroidal structure and vasculature in eyes following scleral buckling (SB) for rhegmatogenous retinal detachment (RRD) compared with fellow eyes and control eyes. Methods: This retrospective observational study was performed on 84 eyes: 32 eyes in the study group consisting of patients who had undergone SB due to RRD, 32 fellow eyes of the same patients, and 20 normal control eyes. Choroidal structures and optical coherence tomography angiography (OCTA) parameters were measured and compared among the three study groups. Results: In the study group, the mean total choroidal area (0.6816 ± 0.03188 mm2) was comparable to the fellow eyes (0.7199 ± 0.03056 mm2) and the control group (0.7154 ± 0.17160 mm2). Mean outer luminal area was significantly lower in the study group (0.4089 ± 0.00442 mm2) than in the fellow eyes (0.4437 ± 0.00701 mm2) and the control group (0.4475 ± 0.00442 mm2) (P = 0.042, and 0.047, respectively). The choroidal vascularity index (CVI) and OCTA parameters were not significantly different in eyes with prior SB compared to the fellow eyes and the control group. Conclusion: SB does not significantly affect CVI, choroidal vasculature, and OCTA parameters.

Malignant melanoma of the conjunctiva is a rare tumor of the ocular surface with potential fatal consequences and a high likelihood of recurrence. Although routes for extending the tumor, including local, hematogenous, and lymphatogenous, are pretty straightforward, the indirect extension through free-floating tumoral cells to the nasolacrimal duct is not described thoroughly. We report a case of malignant melanoma of the conjunctiva which presented with local recurrence in the intranasal cavity and lacrimal sac two years after the primary surgery (without involvement of the ocular surface and punctum on the second occasion). However, there was no evidence of distant metastasis on either occasion. This case demonstrates the possible noncontiguous spreading route of melanoma tumoral cells and highlights the need for attention to the surgical technique, and careful follow-up to detect further disease activity.