After @ weeks of topical application , subjects in @ % TD group showed lower overall visual pain score compared with placebo group ( @ -LSB- @ -RSB- vs. @ -LSB- @ -RSB- , difference : @ ; @ % CI , @ to @ ; P = @ ) as well as decreased burning pain ( @ -LSB- @ -RSB- vs. @ -LSB- @ -RSB- , difference , @ ; @ % CI , @ to @ ; P = @ ) .