Karl-Johan Hellgren

Articles in journals

• Hellgren, K. & Bengtsson, B. (2025). Ten years of visual field change in people living with diabetes: A prospective longitudinal study.  PLOS ONE, 20 (3). [BibTeX]
• Sharif, A. , Smith, D. R. , Hellgren, K. & Jendle, J. (2024). Diabetic retinopathy among the elderly with type 2 diabetes: A Nationwide longitudinal registry study.  Acta Ophthalmologica, 102 (6), e883-e892. [BibTeX]
• Sharif, A. , Jendle, J. & Hellgren, K. (2021). Screening for Diabetic Retinopathy with Extended Intervals, Safe and Without Compromising Adherence: A Retrospective Cohort Study.  Diabetes Therapy, 12 (1), 223-234. [BibTeX]
• Hellgren, K. , Agardh, E. & Bengtsson, B. (2014). Progression of Early Retinal Dysfunction in Diabetes Over Time: Results of a Long-term Prospective Clinical Study.  Diabetes, 63 (9), 3104-3111. [BibTeX]
• Hellgren, K. , Bengtsson, B. & Agardh, E. (2013). Functional and structural change in diabetic eyes. Interim results from an ongoing longitudinal prospective study.  Acta Ophthalmologica, 91 (7), 672-677. [BibTeX]
• Agardh, E. , Hellgren, K. & Bengtsson, B. (2011). Stable refraction and visual acuity in diabetic patients with variable glucose levels under routine care.  Acta Ophthalmologica, 89 (2), 107-110. [BibTeX]
• Bengtsson, B. , Hellgren, K. & Agardh, E. (2008). Test-retest variability for standard automated perimetry and short-wavelength automated perimetry in diabetic patients.  Acta Ophthalmologica, 86 (2), 170-6. [BibTeX]

Conference papers

• Sharif, A. , Jendle, J. & Hellgren, K. (2023). Inter-observer Reliability of Counting Retinal Microaneurysms and Haemorrhages in Elderly with Diabetes. In:  European Journal of Ophthalmology. Paper presented at 33rd European Association for Diabetic Eye Complications Conference (EAsDEC 2023), Coimbra, Portugal, June 1–3, 2023. (pp. 20-20). Sage Publications. [BibTeX]