Table 2

Participant demographics across review studies (experimental)

Mean ageGenderNationality (ethnicity)Vision impairments
51 years40 Females
40 Males
ChineseDiabetic retinopathy
55.8 years17 Females
14 Males
GermanOpen angle glaucoma
17 yearsFemaleAmericanBlind
5 years1 Female
5 Males
AmericanBlindness ranging from: one prosthetic eye, bilateral retinoblastoma nystagmus, cortical visual impairment