Since at least 2011—along with a base monthly payment—AISH beneficiaries may also be eligible for certain health benefits and or subsidies. This includes most prescription medications, some dental, optical, ambulance, some Alberta Aids to Daily Living (AADL) and transits services, as well as some essential diabetic supplies. AISH benefits include a dental checkup and cleaning every six months, and all necessary fillings; one routine eye exam and a new pair of eyeglasses every two years; about C$41 for people with diabetes who require a special diet; and fees for some ground ambulance service. Some municipal areas offer transit options for eligible AISH recipients that may include a subsidized monthly pass.