Hyperreflective foci in diabetic macular edema with serous retinal detachment: association with dyslipidemia

Abstract

Aims

Hyperreflective foci (HF), detected in the retina of diabetic patients, suggest the presence of microglial activation and migration, while controversies still remain for the origin of HF to be precursors of hard exudates. We investigated the presence of HF and their association with dyslipidemia in serous retinal detachment (SRD)-type diabetic macular edema (DME).

Methods

Forty-two eyes in 42 patients with diabetic retinopathy (DR) and 22 eyes in 22 patients with branch retinal vascular occlusion (BRVO) showing macular edema were included in this study. The medical records and OCT findings were retrospectively reviewed in patients with SRD-type DME and compared with those with BRVO. The mean number of HF, the mean choroidal thickness, and lipid profiles were analyzed and compared between groups.

Results

The mean number of HF was significantly higher in DR group compared to BRVO group. Significant correlation of HF was noted with triglycerides (r = 0.523, P = 0.002). Triglycerides were significantly associated with HF by linear regression (β = 0.012, 95% CI 0.001–0.024, P = 0.034) and remained significantly associated by multiple linear regression (β = 0.014, 95% CI 0.003–0.025, P = 0.014).

Conclusions

HF on OCT of DME patients could be indicative of activated microglia. HF are associated with dyslipidemia, especially high triglycerides, suggesting inflammatory reaction from dyslipidemia in diabetic retina.

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Acknowledgements

This study was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2017R1D1A1A02018439).

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Correspondence to Kihwang Lee.

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This study was approved by the Institutional Review Board of Ajou University Hospital, Suwon, Korea (IRB No.: MED-MDB-18-481) and complied with the Declaration of Helsinki.

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This article belongs to the topical collection Eye Complications of Diabetes, managed by Giuseppe Querques.

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Chung, YR., Lee, S.Y., Kim, Y.H. et al. Hyperreflective foci in diabetic macular edema with serous retinal detachment: association with dyslipidemia. Acta Diabetol 57, 861–866 (2020). https://doi.org/10.1007/s00592-020-01495-8

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Keywords

  • Diabetic macular edema
  • Dyslipidemia
  • Hyperreflective foci
  • Microglia
  • Triglycerides