Table 2.

Participant Characteristics: Disease/Treatment-Related Factors

	Value, n (%)
Mean disease duration (years)	9.9
Mean treatment duration (years)	9.4
No assistance for taking eye drops	197 (98.0)
Need for assistance	4 (2.0)
Medication with preservatives	169 (84.1)
Combined medication with and without preservatives	24 (11.9)
Preservative-free medication	8 (4.0)
Experience of side effects	125 (62.2)
No experience of side effects	76 (37.8)
Reported therapy switch	73 (36.3)
No therapy switch	128 (63.7)
Unable to drive a vehicle due to visual disability	30 (14.9)
Strong or very strong fear of blindness	106 (52.8)