Table 2

Percentage of subjects with juvenile macular dystrophy or retinitis pigmentosa responding to activities at each level of difficulty

Activityχ2dfp ValueLevel of difficultyDid not perform for non-visual reasonsGroup
NoneMildModerateExtremeNot able
Activities involving central vision:
 Threading a needle32.840.001 2.812.51.413.945.823.6JMD
20.015.013.35.018.328.3RP
 Reading street signs at night57.740.001 0.09.715.312.562.50.0JMD
14.225.027.520.011.71.7RP
 Reading directions on medicine bottles59.940.001 8.312.515.319.444.40.0JMD
39.228.313.311.74.23.3RP
 Reading ingredients on cans of food88.440.001 6.98.315.319.445.84.2JMD
51.725.012.54.22.54.2RP
 Reading street signs during the day79.140.001 2.811.126.420.838.90.0JMD
39.233.319.25.82.50.0RP
 Seeing faces across a street67.640.001 2.811.15.60.079.21.4JMD
40.025.810.02.520.80.8RP
 Reading ordinary newspaper print84.940.001 5.619.415.38.350.01.4JMD
55.029.210.01.73.30.8RP
 Playing cards49.040.001 19.433.312.55.616.712.5JMD
59.211.75.05.80.018.3RP
 Reading numbers on TV screen56.840.001 19.429.220.85.623.61.4JMD
70.820.05.80.82.50.0RP
 Finding destination/unfamiliar buildings21.830.001 15.337.529.216.70.01.4JMD
46.731.714.27.50.00.0RP
Mobility:
Finding a seat in a movie theatre35.530.001 45.818.18.313.90.013.9JMD
11.712.528.330.00.017.5RP
 Finding particular items in a store8.730.034 31.929.218.15.60.015.3JMD
51.725.07.55.00.010.8RP
 Walking outdoors at night35.940.001 52.818.111.12.813.91.4JMD
14.224.225.815.018.32.5RP
 Participating in social gatherings4.040.40851.429.213.90.02.82.8JMD
41.733.319.22.51.71.7RP
 Walking through shopping malls27.940.001 70.813.911.12.81.40.0JMD
31.729.222.59.26.70.8RP
Negotiating steps:
Walking down steps in dim light42.640.001 45.829.22.80.020.81.4JMD
11.717.522.56.734.27.5RP
 Walking down steps during daylight18.440.001 62.522.22.80.011.11.4JMD
34.224.212.55.818.35.0RP
Driving:
Driving at night5.340.2595.69.75.61.413.963.9JMD
11.718.316.713.316.723.3RP
 Driving during the day15.040.005 5.623.62.82.81.463.9JMD
37.529.210.01.70.021.7RP
 Driving in unfamiliar areas10.240.038 0.011.111.12.88.366.7JMD
15.030.812.56.78.326.7RP
Eating:
Eating meals1.820.42088.99.71.40.00.00.0JMD
86.78.35.00.00.00.0RP
Miscellaneous:
Writing checks36.440.001 40.316.75.66.912.518.1JMD
83.35.01.70.81.77.5RP
 Engaging in physical exercise2.840.58765.319.44.20.04.26.9JMD
62.523.37.50.81.74.2RP
 Watching a movie at a theatre3.140.53747.222.211.15.68.35.6JMD
48.316.714.21.76.712.5RP
 Using a ruler46.040.001 23.627.823.68.39.76.9JMD
70.014.25.82.50.86.7RP
 Walking outdoors during the day2.340.68268.120.88.31.41.40.0JMD
73.316.78.30.01.70.0RP
 Preparing meals8.720.013 59.729.28.30.00.02.8JMD
78.314.24.20.00.03.3RP
 Grooming5.430.14476.420.82.80.00.00.0JMD
85.010.03.31.70.00.0RP
 Using a screwdriver23.340.001 47.226.415.31.41.48.3JMD
70.011.71.75.00.810.8RP
 Using escalators6.230.10486.18.31.40.04.20.0JMD
70.019.24.20.05.01.7RP
 Watching television40.040.001 36.131.920.89.71.40.0JMD
80.012.56.70.80.00.0RP
 Grocery shopping15.340.004 27.836.113.95.66.99.7JMD
56.720.89.21.76.75.0RP
 Using public transport11.940.018 25.026.415.38.32.822.2JMD
40.815.09.21.71.731.7RP
  • JMD = juvenile macular dystrophy; RP = retinitis pigmentosa.

  • 0.01<p⩽0.05.

  • p⩽0.01.