Every year you are allowed one visit to an optometrist. This does not include glasses. You can get glasses every two years. This change was made in April of this year. All prescriptions are sent to prosthetics for authorization. I do not know if an actual optometrist is the one giving the authorization, but I hope so. If this is a replacement for a pair of glasses 24 months old or older then there isn't supposed to be any problem getting a new pair. If the new prescription is less than 24 months, it is up to prosthetics to decide if you really need a new pair. I have not been able to find out what that criteria is. I am going to Wilmington VA HCC tomorrow for carotid arteries ultrasound and to be fitted for my new glasses. I will ask the lady who will be fitting me if she knows the criteria and if she knows and will tell me I will post it. These criteria are not just for veterans who are let me call them healthy, but also for 100% service-connected veterans, but I am sure at least I hope so that veterans whose eyes were damaged while in the service can get them whenever needed. Hope you can understand that last sentence. Now you can see why I need the ultrasound.