||The title: A BOT - 2 test for balance function evaluation in children with chronic bilateral sensorineural hearing loss. The aim: To assess the balance ability in children with bilateral chronic sensorineural hearing loss (SNHL). Objectives: 1) To evaluate the balance ability in children with chronic SNHL and normal-hearing controls by the BOT-2 test and compare received results with each other. 2) To determine the balance function based on patient’s age, gender and hearing loss dergree. 3) To compare balance ability in children with cochlear implants and children with chronic SNHL with hearing aids. 4) To compare balance ability in children with cochlear implants and normal-hearing controls. Methodology: Children with chronic SNHL were recruited from the Department of Otorhinolaryngology of the Hospital of Lithuanian University of Health Sciences. To confirm chronic SNHL level and reject other ear disease was carried out a variety of tests including: otoscopy, conditioned play or pure tone audiometry, impedance testing and otoacousticemission. All subjects underwent Balance subset of the BOT-2 test. Parents completed a questionnaire designed to evaluate their opinion about their child’s balance abilities in daily living activities. Results: The study involved 69 children, 4-15 years old: 31(44,9%) with chronic SNHL, 30 (43,5%) healthy children and 8 (11,6%) with cochlear implants. The parents (n=31) of children with chronic SNHL were surveyed and results showed that, 41,9 % (n=13) of parents notice their child balance disorder. Balance abilities in one leg standing tasks on a line (7,23±1,9 s vs. 8,97±1,4 s, p=0,001) and on a balance beam (7,26±2,0 s vs. 8,37±1,3 s, p=0,021) with eyes open were statistically significant better in control group compared with SNHL group. The highly difference was observed performing one leg standing task on a line (3,06±1,6 s vs. 7,37±1,6 s, p=0,001) and on a balance beam (2,55±1,5 s vs. 7,33±1,4 s, p=0,001) with eyes closed. There was no statisticaly significant diference between SNHL group with hearing aids and children with cochlear implants (p>0,05). According to the study results, age is an important factor on balance, but gender and hearing level have no significant effect on the balance function. Conclusions: 1) Children with chronic SNHL showed significantly poorer balance abilities than control group during the BOT-2 test. 2) Older children have a better balance control, but gender and hearing level have no significant effect. 3) The balance ability in children with cochlear implantation group do not differ from children with chronic SNHL with hearing aids. 4) The balance ability in children with cochlear implantation group was statisticaly poorer than normal-hearing controls.