Impaired Visual Function

Macular degeneration: do conventional measurements of impaired visual function equate with visual disability?

AIMS To examine the relation between measures of vision and ability to perform daily living tasks in those visually impaired with macular degeneration. METHODS A visual functioning index (daily living tasks dependent on vision: DLTV) was used to evaluate patients' perception of their ability to perform vision dependent tasks. Distance visual acuity, near visual acuity, reading speed, and cont...

National Eye Institute Visual Function Questionnaire or Indian Vision Function Questionnaire for visually impaired: a conundrum.

PURPOSE Both the long form visual functioning scale (LFVFS(39)) and visual functioning scale (VFS) are measures of visual functioning (VF) that represent the Rasch-scaled versions of the NEI-VFQ(39) and the Indian vision function questionnaire (IND-VFQ), respectively. The objectives of this study were to investigate if the 15-item LFVFS(39) and 13-item VFS of the IND-VFQ meet the assumptions of...

Reduced cerebral blood flow and impaired visual-spatial function in proximal myotonic myopathy.

OBJECTIVE To compare brain involvement in myotonic dystrophy (DM) with that of proximal myotonic myopathy (PROMM). BACKGROUND PROMM is a multisystem disease with many features in common with DM. METHODS Twenty patients with DM (CTGF[500-700), 20 patients with PROMM, and 20 normal control subjects were studied. Neuropsychological testing was performed in 12 patients with PROMM and in 18 pati...

Role of electroretinography in investigation of impaired visual function in childhood.

Visual function is difficult to assess in young children because their limited ability to understand and communicate determines the necessity of adopting, to a large extent, objective methods of examination and investigation (Harcourt and Wybar, 1966). This also applies sometimes to older children who are not sufficiently co-operative in their subjective responses. The afferent visual system is...

Consequences of impaired splenic function.