Please assess the completion status of the following clinical trial:

Trial Title: Spatial Cognitive Training

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: OTHER
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Inability to perceive visual stimuli, i.e. no light perception, with stable visual loss over the past year~* The investigators anticipate that causes of blindness will be ocular, including:~  * glaucoma~ * diabetic retinopathy and macular degeneration~ * the most common causes of blindness in Veterans~ * as well as possibly late-onset Leber's optic atrophy and ocular trauma (in the absence of TBI)~* To minimize heterogeneity due to variations in age and the duration of visual loss, the investigators will restrict enrollment to Veterans and Non-Veterans over the age of 50 who lost light perception within the last 5 years, and who have completed standard O\&M training.~* From a practical standpoint, this also enables the investigators to focus on participants who can potentially benefit most from the proposed intervention.~Exclusion Criteria:~* Participants will be excluded if they have any neurological condition, such as:~  * TBI~ * history of blast exposure~ * stroke~ * brain tumors~ * epilepsy, etc.~* Participants will also be excluded if MRI scanning is contra-indicated, e.g.:~  * due to an implanted device such as a pacemaker~ * or foreign bodies of ferromagnetic nature~* Cognitive screening will be performed using the Repeatable Battery for Assessment of Neuropsychological Status (RBANS, Randolph, 1998) and participants with cognitive impairment will be excluded based on a score of 1.5 SD below the mean for the Verbal Memory Index.~* The investigators will test participants' hearing using a validated screening questionnaire (Screening Version of the Hearing Handicap Inventory for the Elderly, HHIE-S, Wentry \& Weinstein, 1983, Lichtenstein et al., 1988) followed by assessment of audiometric pure tone (0.5, 1.0, 2.0, 4.0 KHz) hearing thresholds in the CVNR sound booth.~* Participants with more than mild hearing loss (HHIE score \>8 or audiometric thresholds \>40dB) will be excluded (Wentry \& Weinstein, 1983; Wilson, 2009), given that the investigators are relying on audio cues.~* The investigators will also exclude visually impaired Veterans who are dependent on a wheelchair or scooter for mobility, as they will not be able to take part in the real-world task.

- Gender: ALL
- Minimum Age: 50 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Training Group (Type: EXPERIMENTAL): Spatial training
- Control Group (Type: OTHER): Letter number matching

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