Choroid Involvement Secondary to Optic Disc Pit Maculopathy: OCT Analysis And Evolution After Surgical Treatment: Choroidal Involvement In Optic Pit Maculopathy.

Purpose: To assess choroidal changes associated to optic disc pit maculopathy (ODP-M) and their evolution after surgical treatment.
Design: Multicentric retrospective case series.
Methods: Analysis of 42 patients affected by unilateral ODP-M undergoing surgical treatment between 2013 and 2023. Optical coherence tomography (OCT) were performed at baseline and postoperative months 1, 6, 12, 24 and most recent follow-up. Subfoveal choroidal thickness (SFCT) and peripapillary choroidal thickness (PPCT) were measured in ODP-M and fellow eyes. The presence of retinal pigmented epithelium (RPE) atrophy was used to distinguish between "early" and "advanced" disease, and data regarding fluid localization were collected.
Results: Baseline SFCT in ODP-M eyes was significantly higher than fellow eyes (386.8±88.9 vs. 334.4±72.2 μm, p=0.002), differently from PPCT (192.6±47.8 vs. 181.2±45.7 μm, p=0.46). SFCT significantly decreased 1 month post-operatively (mean reduction 36.5 μm, p=0.009) and remained below pre-operative values throughout the follow-up, showed a mean reduction of 79.4 μm at final follow-up (p<0.001). Conversely, PPCT showed no changes between pre-operative and post-operative values (all p>0.05). Nine eyes (21.4%) showed submacular dilated choroidal vessels, correlated with the presence of subretinal fluid (p=0.008) and reducing in caliber after surgical treatment. The 10 eyes (23.8%) with "advanced" disease had lower baseline SFCT and worse BCVA compared to the "early" subgroup, and showed a delayed reduction of choroidal swelling post-operatively.
Conclusion: Subfoveal choroid may thicken and remodel in response to ODP-M, eventually returning to physiological values after surgical treatment. Moreover, the presence of RPE atrophy may influence retino-choroidal balance. Conversely, PPCT didn't show comparable modifications.
Competing Interests: Declaration of competing interest The authors declare no conflict of interest.
(Copyright © 2024. Published by Elsevier Inc.)