Contrast Sensitivity Loss in Patients With Posttreatment Lyme Disease

Posttreatment Lyme disease (PTLD) is marked by neurologic symptoms, cognitive impairment, and significant symptom burden, including fatigue and ocular complaints. The purpose of this study was to determine whether contrast sensitivity (CS) is altered in patients with PTLD compared with healthy controls and, second, whether CS is associated with cognitive and/or neurologic deficits. CS was measured using a Pelli-Robson chart with forced-choice procedures, and the total number of letters read was recorded for each eye. CS impairment was defined for age