Characterizing Retinal Mitochondrial Function and Its Relations to Intraretinal Thicknesses in Healthy Adults

Area of Science:

• Ophthalmology
• Retinal Imaging
• Mitochondrial Function

Background:

• Retinal mitochondrial health is crucial for vision.
• Understanding its relationship with retinal structure is important for diagnosing eye diseases.

Purpose of the Study:

• To investigate the connection between retinal mitochondrial function and the thickness of various retinal layers in healthy individuals.
• To determine if age influences this relationship.

Main Methods:

• Retinal flavoprotein fluorescence (FPF) and stress index (SI) were measured as indicators of mitochondrial function.
• Spectral-domain optical coherence tomography (OCT) was used to measure intraretinal layer thicknesses.
• 75 healthy adults were included in the study.

Main Results:

• Retinal mitochondrial function (FPF) showed inverse correlations with total retinal thickness (TRT), retinal nerve fiber layer (RNFL), and ganglion cell-inner plexiform layer (GCIPL) thickness.
• These associations lost statistical significance after accounting for the participants' age.
• Age was significantly associated with both mitochondrial function and retinal layer thicknesses.

Conclusions:

• The observed relationship between retinal mitochondrial function and intraretinal thicknesses in healthy adults is likely mediated by age.
• This highlights the importance of considering age in studies of retinal structure and function.