29th December 2023

Parkinson’s Disease

Ophthalmological signs in Parkinson’s can arise from efferent or afferent dysfunction due to the decreased levels of dopamine in the CNS. In normal physiology, dopamine is a neurotransmitter in the retina and is theorised to control the activity of several cell types. Ocular symptoms can include horizontal diplopia (mono or binocular), convergence insufficiency where a patient struggles to read or clearly see items at close distance, photosensitivity, and subjective reductions in visual quality.