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Physical Characteristics of Participants Who Completed the Study
| Characteristic Frequency | (%) |
|---|---|
| Bifocals | 6 (55) |
| Trifocals | 2 (18) |
| Existing cataracts | 4 (36) |
| Previous cataract surgery | 4 (36) |
| Macular degeneration | 0 (0) |
| Hearing impairment | 5 (45) |
| Right handed | 10 (91) |
| Left handed | 1 (9) |
| Arthritis in dominant hand | 7 (64) |
| Tremor in dominant hand | 1 (9) |
