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Table 2 Characteristics of the patient group (n = 20).

From: Feasibility of the Dutch ICF Activity Inventory: a pilot study

Characteristics (Specification) Number of participants (%)
Age in years   
   Mean (range) 70.75 (51-89)$
Sex   
   Male 8 (40)
Eye condition (as reported in patient file)   
   Macular degeneration 8 (40)
   Cataract 5 (25)
   Glaucoma 2 (10)
   Refractive error (severe) 2 (10)
   Neurological problem 2 (10)
   Arterial problem 2 (10)
   Cornea diseases 1 (5)
   Retinitis pigmentosa 1 (5)
   Amblyopia 1 (5)
   Unknown 1 (5)
   More than one eye condition 5 (25)
Visual Ability   
   Visual Acuity (as reported in patient file*) better eye worse eye
VA in Snellen: ≥ 0.5 5 (25) 0 (0)
VA in Snellen: ≥ 0.3 - 0.5 5 (25) 1 (5)
VA in Snellen: ≥ 0.1 - 0.25 6 (30) 6 (30)
VA in Snellen: ≥ 0 - 0.09 4 (20) 12 (60)
   Substantial visual field loss 6 (12) 7 (35)
   Worse eye interferes with better eye # 3 (15)
   Difficulty with low or high light levels 3 (15)
   Rapid fatigue of eyes 2 (10)
  1. * If more than one vision test was applied to the patient, the most recent data were used. Data of four patients were obtained by the ophthalmologist (measured with own correction). Data of one patient was obtained by another MRC (measured with the best possible correction). Data of 15 patients were obtained by the low vision specialist of the MRC (measured without correction; for 9 patients a better correction was not possible).
  2. # When looking with both eyes
  3. $ Mean (range) in stead of 'Number of participants (%)'