Diabetes Care, Vol 7, Issue 4 313-317, Copyright © 1984 by American Diabetes Association
Use of tactile techniques for self-monitoring of blood glucose in visually impaired patients with diabetes mellitus
JC Prior, NC Alojado, JA Hunt and IS Begg
Twenty-eight patients with type I diabetes mellitus, legally blind as a
result of proliferative retinopathy, were recruited into a program designed
to teach and evaluate tactile methods for self-monitoring of blood glucose
(SMBG). Vision ranged from "blind" to "able to read large print."
Techniques with wipe-off strips (Chemstrip bG or BM Test BG,
Boehringer-Mannheim, Canada Ltd., Dorval, Quebec, Canada) use the opposite
hand as a guide, operation of timing devices by touch, and special methods
for labeling and storing strips. Methods with wash-off strips (Dextrostix,
Ames Division, Miles Laboratories, Rexdale, Ontario, Canada) employ the
fingers as a guide in directing the wash water. The accuracy of tactile
methods was documented. Clinical parameters of glucose control improved in
patients with adequate data after 6 mo of tactile SMBG. Glycosylated
hemoglobin in 17 patients decreased from 11.3 +/- 2.1% to 9.4 +/- 1.5% (P =
0.005). Patients experienced significantly fewer reactions and low blood
sugar readings as well as lowering of mean blood glucose values from 158
+/- 56 to 141 +/- 51 (P = 0.025).