Vision.

Progressive Worsening of Spatial and Chromatic Processing Deficits in Parkinson Disease

“…The PR compares monocular vs binocular CS, whereas the VT explores different spatial frequencies (cycles per degree [cpd]). 8 All these tests have already been applied to PD patients; they have easy instructions and require only short spans of attention. We further applied the Unified Parkinson's Disease Rating Scale (UPDRS), including the section of activities of daily living (ADL), and the Schwab and England test.…”

Investigation of visual loss: neuro-ophthalmology from a neurologist's perspective.

“…Transient visual disturbance provoked by changes in ambient lighting can also be produced by retinal diseases such as cone dystrophies, and diagnosis can be aided by the use of electroretinography. 5 Conditions referable to primary ocular structures such as acute angle closure glaucoma or vitreous haemorrhage will not be discussed here. Nevertheless, it is likely that there will be abnormalities on ophthalmoscopy to aid diagnosis, especially if the patient is seen within a day or so of the acute event.…”