Table 1.

Demographic and clinical parameters of patients under long-lasting treatment with botulin A toxin injection

Characteristic	No.
Patients	26
Males	6
Females	20
Age (years)	76.4±8.9
Duration of treatment (years)	7.2±5.4
Frequency of injections (months)	3.3±0.4
OSDI score	12.1±8.5
Dry eye diagnosis	11
Usage of tear substitutes	8

Data are expressed as mean±standard deviation. OSDI=Ocular Surface Disease Index