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Multiple Sclerosis Vision Test Battery

This book is available for download with iBooks on your Mac or iOS device. Multi-touch books can be read with iBooks on your Mac or iOS device. Books with interactive features may work best on an iOS device. iBooks on your Mac requires OS X 10.9 or later.

Description

Three vision tests are contained in this battery designed for assessment of Multiple Sclerosis patients:
High Contrast Visual Acuity  Low Contrast Visual Acuity (2.5% and 1.25%) Letter Contrast Sensitivity All tests are widely used and validated. Unlike printed tests, these charts require no external lighting and runs on the iPad without need for special software or calibration. The tests utilize the high quality iPad screen to produce letters small enough to measure visual acuity at test distances as short as 6 feet or 2 meters.
Disturbances in visual function are common in patients with multiple sclerosis (MS). These impairments are often not readily apparent on commonly used high-contrast acuity tests so low-contrast charts have been leveraged in the assessment of visual dysfunction in patients with MS. Low contrast visual acuity and contrast sensitivity best distinguished MS patients from disease-free control subjects in the Multiple Sclerosis Vision Prospective cohort. Decrements in low contrast visual acuity are associated with MS and correlate with increasing disability, MRI abnormalities, and reduced retinal nerve fiber layer (RNFL) thickness as measured by optical coherence tomography (OCT). Low-contrast letter acuity testing is a potentially useful addition to disability scales such as the Multiple Sclerosis Functional Composite. Two phase 3 studies of natalizumab showed that low-contrast letter acuity testing demonstrated treatment effects. The use of low-contrast letter acuity tests may improve assessment of treatment efficacy in patients with MS.
Important Notes
The letters are calibrated for the Retina Display. The contrast of the visual acuity charts are defined by Michelson contrast. The Weber contrast values are 2X higher.  Other vision tests also available from the iTunes store.

What's New in Version 1.3

Errors addressed

Multiple Sclerosis Vision Test Battery
View in iTunes
  • $39.99
  • Available on iPad, iPhone and Mac.
  • Category: Medicine
  • Published: Dec 21, 2016
  • Publisher: Ridgevue Vision
  • Seller: Ridgevue Vision LLC
  • Print Length: 107 Pages
  • Language: English
  • Version: 1.3
  • Requirements: To view this book, you must have an iPad with iBooks 2 or later and iOS 5 or later, or an iPhone with iOS 8.4 or later, or a Mac with OS X 10.9 or later.

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