Phage concentration also influenced eye formation, their size and the total surface occupied by cheese eyes. Cheese inoculated at MOI 60 showed fewer eyes and a smaller area occupied by them, especially at the beginning (days 1 and 4) and the end of the ripening period. Addi- tionally, cheeses inoculated with the highest MOI showed the smallest eye size at day 1 (p < 0.05).