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. Author manuscript; available in PMC: 2022 Mar 1.
Published in final edited form as: Optom Vis Sci. 2021 Mar 1;98(3):182–198. doi: 10.1097/OPX.0000000000001664

TABLE 2.

In-vitro silver lens cases decrease contamination & biofilm formation (cells represent percentages of cases with microbial contamination unless otherwise indicated).

In vivo studies MicroBlock (CIBA Vision) Control P-value
Contamination rate
Lakkis & Lakkola 2006* 90% 100% NS
Dantam et al 201288 71% 82% NS
Gram-positive contamination
Lakkis & Lakkola 2006* 81% 83% NS
Dantam et al 2012- cocci88 64% ~45% NS
Dantam et al 2012- bacilli88 33% 53% P = .03
Gram-negative contamination
Lakkis & Lakkola 2006* 26% 46% P < 0.05
Dantam et al 201288 11% 25% P = .04
Contamination levels
Lakkis & Lakkola 2006* 19% Mod/Heavy 43% Mod/Heavy P < .05
Dantam et al 201288 1.7 log CFU per well 4.1 log CFU per well P < .005
*

Lakkis C, et al. CLAE 2006;29;BCLA Abstract 205.