Please assess the completion status of the following clinical trial:

Trial Title: Photic Blink Reflex in People With Blepharospasm and Increased Blinking

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

Eligibility Criteria:
* INCLUSION CRITERIA:~* Must be 18 years or older~* For patients only: fulfill the criteria of~  * Primary BPS (either focal or related to segmental dystonia) in accordance with published criteria or~ * Excessive involuntary eyelid closure without sustained OO spasms in accordance with Conte et al + having a resting blink rate above 15 blinks per minute.~* Ability to give informed consent.~* Ability to comply with all study procedures.~* Agree to consume no caffeine or alcohol for 12 hours before participating in the testing visits.~EXCLUSION CRITERIA:~Any of the following will exclude PATIENTS from the study:~* Secondary causes of excessive involuntary eyelid closure such as ophthalmologist disorders involving the ocular surface, tear film, or eyelids.~* Any evidence suggesting a psychogenic movement disorder such as persisting unilateral or asymmetric symptoms, paroxysmal symptoms, and other inconsistencies such as pain, associated somatizations, blinking diminished by distraction, unusual sensory tricks, or unexpected response.~* Botulinum toxin treatment \< 3 months prior to a testing visit.~* History of chronic exposure (\>3 month) to dopamine receptor blocking agents before the onset of increased blinking alone or BPS.~Any of the following will exclude BOTH patients and healthy controls from the study:~* Has any major medical problem other than increased blinking or dystonia in patient groups (such as decompensated chronic diseases or conditions that cause serious disability such as congestive heart failure/NYHA score greater than or equal to 2, severe COPD, advanced neoplasia, severe arthritis, HIV/AIDS, blindness).~* Employees, staff or fellows of HMCS in NINDS.~* Has used illegal drugs within the past 6 months based on history. The intent is to exclude those with drug use that may affect study results.~* Self-reported consumption of more than 7 alcoholic drinks a week in the case of a woman and 14 alcoholic drinks a week in the case of a man.~* Abnormal findings on neurologic exam (other than increased blinking or dystonia in patient groups).~* Presence of anatomical or functional eyelid abnormalities other than involuntary eyelid closure or OOs spasms (including apraxia of eyelid opening, and other disorders such as tics or tardive syndromes).~* Has a neurologic disorder other than increased blinking or dystonia.~* Has major depression or any major mental disorders (axis I disorders).~* Has had a head injury where there was a loss of consciousness for more than a few seconds.~* Has a deep brain stimulator, pacemaker or other implantable electronic device subject to malfunction by electrical stimulation.

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

Study Arms:
- Healthy (Type: None): 24 healthy volunteers (HVs)
- Patients (Type: None): 24 patients with blepharospasm
- Patients 2 (Type: None): 24 patients with increased blinking alone.

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

Answer: outcome: terminate
termination_type: feasibility