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Potential Eye Disorders in People With and Without Type 2 Diabetes Mellitus Exposed to GLP-1 Receptor Agonists: An
Mya Murray1, Fabrizio Schifano2, Stefania Chiappini3
1From Pharmacy, the Singleton Campus (M.M., A.G.), Swansea University, Wales, UK.
Purpose:
As use of glucagon-like peptide-1 receptor agonists (GLP-1RAs) for Type 2 diabetes (T2DM) and weight management increases, emerging research identifies various adverse drug reactions. This study aimed to expand this research base, focusing on eye disorders in people with and without T2DM, a novel consideration.
Design:
A retrospective clinical cohort disproportionality analysis of reports made to the Food and Drug Administration Adverse Event Reporting System (FAERS).
Methods:
FAERS was queried regarding selected GLP-1RAs. Python 3.11 was adopted to develop a program, quantifying reported cases between January 2017 - September 2025 (January 2022-September 2025 for tirzepatide) meeting the criteria for cases with and without T2DM. Main outcome measures Reporting Odds Ratios (RORs) >4.000 and 95% confidence intervals were calculated, with metformin and orlistat as controls.
Results:
Compared to metformin, semaglutide showed increased reporting of optic ischemic neuropathy (ROR: 12.269 [0.915-1.967]), cataract (ROR: 31.879 [2.463-4.461]) and retinopathy (ROR: 5.185 [0.556-2.736]) in T2DM patients, and retinopathy (ROR: 9.424 [1.081-3.406]) and retinal hemorrhage (ROR: 10.253 [0.319-4.336]) in non-T2DM patients. Tirzepatide showed increased reporting of optic ischemic neuropathy (ROR: 4.619 [0.726-2.335]) and macular degeneration (ROR: 15.579 [0.554-4.938]) in T2DM patients and eye swelling (ROR: 6.475 [0.407-3.329]) in non-T2DM patients. Liraglutide showed increased reporting of cataract (ROR: 53.866 [2.945-5.028]), diabetic retinopathy (ROR: 18.162 [1.753-4.045]) and macular degeneration (ROR: 26.261 [1.076-5.460]) in T2DM patients and cataract (ROR: 9.628 [1.387-3.142]) and macular degeneration (ROR: 9.557 [0.110-4.405]) in non-T2DM patients.
Conclusions:
These results provide a signal of increased reporting of various eye disorders with GLP-1RA use compared to metformin across T2DM and non-T2DM patient cases. Further research is required to support these findings and confirm a biological causation.
Insights
Glucagon-like peptide-1 receptor agonists (GLP-1RAs) may increase the risk of eye disorders, including retinopathy and cataracts, in patients with and without Type 2 diabetes. Further research is needed to confirm these findings.
Area of Science:
- Ophthalmology
- Endocrinology
- Pharmacovigilance
Background:
- Glucagon-like peptide-1 receptor agonists (GLP-1RAs) are increasingly prescribed for Type 2 diabetes (T2DM) and weight management.
- Adverse drug reactions associated with GLP-1RAs are being identified, but their impact on ocular health requires further investigation.
Purpose of the Study:
- To investigate the association between GLP-1RA use and the incidence of eye disorders.
- To compare the reporting of eye disorders in patients with and without T2DM using GLP-1RAs.
Main Methods:
- A retrospective disproportionality analysis of the Food and Drug Administration Adverse Event Reporting System (FAERS) database.
- Utilized Python 3.11 to analyze FAERS data from January 2017 to September 2025, focusing on GLP-1RA reports.
- Calculated Reporting Odds Ratios (RORs) with 95% confidence intervals, using metformin and orlistat as controls.
Main Results:
- Semaglutide use was associated with increased reporting of optic neuropathy, cataracts, and retinopathy in T2DM patients.
- Tirzepatide use showed increased reporting of optic neuropathy and macular degeneration in T2DM patients, and eye swelling in non-T2DM patients.
- Liraglutide use demonstrated increased reporting of cataracts, diabetic retinopathy, and macular degeneration in T2DM patients, and cataracts and macular degeneration in non-T2DM patients.
Conclusions:
- Findings suggest a signal of increased reporting for various eye disorders with GLP-1RA use compared to metformin.
- Further research is warranted to validate these signals and establish biological causality for GLP-1RA-associated eye disorders.
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