Retinal Features May Reveal Depression

In a UK Biobank cohort, thinner ganglion cell-inner plexiform layer and macular measurements were associated with incident depression over more than a decade of follow-up, while no independent association emerged for anxiety disorders.

By
Andrea Surnit
June 11, 2026
4 min

MDSpire News

Objective:

To investigate the association between retinal morphologic features and the risk of incident depression and anxiety disorders in UK Biobank participants.

Approach:

Key Findings:

Greater ganglion cell-inner plexiform layer (GCIPL) thickness associated with an 8% lower likelihood of incident depression.
Greater macular thickness associated with a 9% lower likelihood of incident depression.
Participants in the highest quartile of GCIPL thickness had a 17% lower risk of depression compared to the lowest quartile.
Participants in the highest quartile of macular thickness had a 24% lower risk of depression compared to the lowest quartile.
No independent association found between retinal features and incident anxiety disorders.

Interpretation:

Thinner GCIPL and macular thickness were independently associated with increased risk of depression, particularly in females.

Limitations:

Observational study design limits the ability to establish causality.
Depression and anxiety diagnoses may underestimate true incidence due to reliance on hospital records.
Predominantly White UK Biobank population may limit generalizability.