Table 4: Comparison of the design and results of some relevant studies with the present study.

Author (Year)Number of casesLaser propertiesPlacebo controlledFollowupTinnitus scoring method Effect of laser in treatment
Wave lengthPowerDuration of treatmentVASTHILoudness

Present study82650520 min, 3 days a week, for 20 sessions+++++Pos.
Shiomi et al. (1997) [23]38830409 min a week for 10 sessions+Pos.
Mirz et al. (1999) [21]598305010 min per session++++Neg.
Nakashima et al. (2002) [16]4560Once a week for 4 weeks++Neg.
Prochazka (2002) [1]72830300Twice a week for 5 weeks and after 2-3 m. 5-6 sessions in a week+Pos.
Tauber et al. (2003) [11]35G1: 635
G2: 830
G1: 7.8
G2: 20
5 days a week for 2 weeks+++Pos.
Gungor et al. (2008) [22]45650515 min a day for 1 week+++Pos.
Cuda and De Caria (2008) [14]46650520 min a day for 3 months++Pos.
Teggi et al. (2009) [15]60650520 min a day for 3 months+++++Neg.
Okhovat et al. (2011) [2]61650520 min a day for 20 days+Pos.
Yıldırım et al. (2011) [13]30650520 min 5 times a week for 8 weeks++Pos.