halfsided blindness Partial cortical blindness
Conditions
Sponsors
Rijksuniversiteit Groningen
Eligibility
Age
18 Years to 64 Years
Inclusion criteria
Inclusion criteria: In order to be eligible to participate in this study, a subject must meet all of the following criteria: * Homonymous visual field defect (at least a quadrantanopia, either right-sided or left-sided) due to acquired post-chiasmatic brain injury * At least three months between onset HVFD and the first measurement * Near visual acuity >= 0.5 with patient*s own current correction * MMSE score >=24 * Age >= 18 years * Presence of by patient formulated treatment goal regarding reading
Exclusion criteria
Exclusion criteria: A subject who meets any of the following criteria will be excluded from participation in this study: * Additional visual field defect (at least cluster) in ipsilesional visual hemi-field * Pre-existing dyslexia/ illiteracy/ low literacy/ other pre-morbid reading problems * No clear neurological cause of HVFD * Presence of comorbid neglect The following criteria are made on the premise that, when present, they will impair the ability to successfully followthe intervention: * Communication difficulties (e.g. severe hearing impairment, no fluent understanding of Dutch language, severeaphasia as indicated by the Token test) * Negative advice of treatment team regarding reading intervention participation, due to e.g. severe psychiatric, cognitive or visual perception disorders, problems with health, motivation or illness awareness or misuse ofdrugs/alcohol/medication * Additional visual disturbances (e.g. diplopia, metamorphopsia, low contrast sensitivity)
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The primary outcome measures of this study reflect reading performance as well as perceived reading performance: Words per minute read out loud (((number of words read-number of errors)/time [s]) x 60), Number of reading errors, Words per minute read silently ((number of words in paragraph/time [s]) x 60), Subjective report on reading behavior and participation (index scores), Subjective report on reading difficulties. | — |
Secondary
| Measure | Time frame |
|---|---|
| Vision-related quality of life questionnaire, Fatigue questionnaire, Training motivation, Reading history, Education,Sustained attention task, Working memory task, Long-term memory task, Executive functioning task | — |
Countries
Netherlands
Outcome results
None listed