TY - JOUR
T1 - Effect of trypan blue staining on the elastic modulus of anterior lens capsules of diabetic and nondiabetic patients
AU - Jardeleza, Maria Stephanie R.
AU - Daly, Mary K.
AU - Kaufman, Jessica D.
AU - Klapperich, Catherine
AU - Legutko, Paul A.
PY - 2009/2/1
Y1 - 2009/2/1
N2 - Purpose: To determine whether trypan blue causes a significant difference in the biomechanical properties (stiffness) of diabetic and nondiabetic anterior lens capsules and to determine whether diabetes significantly alters the stiffness of anterior lens capsules. Setting: Veterans Administration Boston Healthcare Center System, Jamaica Plain, Massachusetts, USA. Methods: In this unmasked prospective randomized controlled experimental study, anterior lens capsules were obtained from diabetic and nondiabetic patients approved for cataract surgery. Four treatment groups were created: (1) capsules of nondiabetic patients without trypan blue; capsules of nondiabetic patients with trypan blue; (3) capsules of diabetic patients without trypan blue; (4) capsules of diabetic patients with trypan blue. Anterior lens capsule stiffness as a function of elastic (Young's) modulus (kilopascals) was measured with the Hysitron TriboIndenter. Results: The use of trypan blue led to significantly stiffer anterior lens capsules (P = .036). Trypan blue had the greatest effect on the stiffness of diabetic lens capsules (P = .046). Conclusion: Trypan blue contributed to increased capsule stiffness during capsulorhexis, especially in diabetic patients.
AB - Purpose: To determine whether trypan blue causes a significant difference in the biomechanical properties (stiffness) of diabetic and nondiabetic anterior lens capsules and to determine whether diabetes significantly alters the stiffness of anterior lens capsules. Setting: Veterans Administration Boston Healthcare Center System, Jamaica Plain, Massachusetts, USA. Methods: In this unmasked prospective randomized controlled experimental study, anterior lens capsules were obtained from diabetic and nondiabetic patients approved for cataract surgery. Four treatment groups were created: (1) capsules of nondiabetic patients without trypan blue; capsules of nondiabetic patients with trypan blue; (3) capsules of diabetic patients without trypan blue; (4) capsules of diabetic patients with trypan blue. Anterior lens capsule stiffness as a function of elastic (Young's) modulus (kilopascals) was measured with the Hysitron TriboIndenter. Results: The use of trypan blue led to significantly stiffer anterior lens capsules (P = .036). Trypan blue had the greatest effect on the stiffness of diabetic lens capsules (P = .046). Conclusion: Trypan blue contributed to increased capsule stiffness during capsulorhexis, especially in diabetic patients.
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U2 - 10.1016/j.jcrs.2008.10.040
DO - 10.1016/j.jcrs.2008.10.040
M3 - Article
C2 - 19185249
AN - SCOPUS:58949097705
VL - 35
SP - 318
EP - 323
JO - Journal of Cataract and Refractive Surgery
JF - Journal of Cataract and Refractive Surgery
SN - 0886-3350
IS - 2
ER -