partially blind betta?

my new CT Grimmjow has some trouble eating. he always lunges a bit too short or off to the side. the micro pellets disperse quickly but he still has trouble getting the pellets in his mouth. i think he's either short sighted or partially blind. is it normal for new betta to lunge short of food? ive had him for only 3 days and i have tried dropping the food 3mm away from him.