Please assess the completion status of the following clinical trial:

Trial Title: Coupling of Neural Activity and Retinal Blood Flow in Diabetes

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: CASE_CONTROL
- Primary Purpose: None
- Time Perspective: PROSPECTIVE
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* Men and women aged over 18 years, nonsmokers~* Normal findings in the medical history (except diabetes) and physical examination unless the investigator considers an abnormality to be clinically irrelevant~* normal laboratory findings (except diabetes associated parameters) unless the investigator considers the abnormality to be clinically irrelevant~* normal ophthalmic findings (except mild diabetic retinopathy), Ametropia less than 6 diopters~* inclusion criterion of patients is type I diabetes with non or mild non-proliferative retinopathy~Exclusion criteria~Any of the following will exclude a healthy subject from the study:~* Regular use of vasoactive drugs~* Abuse of alcoholic beverages, participation in a clinical trial in the 3 weeks preceding the study~* Symptoms of a clinically relevant illness in the 3 weeks before the first study day~* Blood donation during the previous 3 weeks~* History or presence of any ocular pathology~* History or family history of epilepsy~* Systemic hypertension defined as systolic blood pressure \>150mmHg, diastolic blood pressure \>90mmHg~* Pregnancy~Any of the following will exclude a subject with diabetes from the study:~* Presence of non-insulin dependent diabetes, maturity onset diabetes of the young (MODY diabetes)~* History or presence of any other diabetes induced vascular pathologies or any other ocular condition other then diabetic retinopathy~* Best corrected visual acuity \<0.8~* Previous laser photocoagulation treatment~* Systemic hypertension defined as systolic blood pressure \>150mmHg, diastolic blood pressure \>90mmHg~* History or family history of epilepsy~* Abuse of alcoholic beverages, participation in a clinical trial in the 3 weeks preceding the study~* Symptoms of a clinically relevant illness in the 3 weeks before the first study day~* Blood donation during the previous 3 weeks~* Pregnancy

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: t

Study Arms:
- Diabetic retinopathy (Type: None): Patients with early insulin dependent diabetes and no or mild non-proliferative retinopathy
- healthy (Type: None): healthy control subjects

Based on this trial design, predict the completion outcome and termination type (if applicable).