This task will assess physiological properties of the visual system related to visual noise and will measure luminance increment detection threshold in a noise task with scores from 0-7, with higher scores considered poorer performance.

This task will assess physiological properties of the visual system related to visual noise and will measure luminance increment detection threshold in a noise task with scores from 0-7, with higher scores considered poorer performance.

This task will assess physiological properties of the visual system related to contrast and will measure the suppression index for a center-surround suppression task with scores from -1.00 to +1.00, with lower scores considered poorer performance

This task will assess physiological properties of the visual system related to contrast and will measure the suppression index for a center-surround suppression task with scores from -1.00 to +1.00, with lower scores considered poorer performance

This task will assess physiological properties of the visual system related to contrast and will measure the suppression index for a center-surround suppression task with scores from -1.00 to +1.00, with lower scores considered poorer performance

This task will assess physiological properties of the visual system related to contrast and will measure the suppression index for a center-surround suppression task with scores from -1.00 to +1.00, with lower scores considered poorer performance

Each test will assess physiological properties of the visual system related to global motion and measure pattern coherence threshold for global motion task with scores from 0.00 to 1.00, with higher thresholds considered poorer performance.

Each test will assess physiological properties of the visual system related to global motion and measure pattern coherence threshold for global motion task with scores from 0.00 to 1.00, with higher thresholds considered poorer performance.

Each test will assess physiological properties of the visual system related to global motion and measure pattern coherence threshold for global motion task with scores from 0.00 to 1.00, with higher thresholds considered poorer performance.

Each test will assess physiological properties of the visual system related to global motion and measure pattern coherence threshold for global motion task with scores from 0.00 to 1.00, with higher thresholds considered poorer performance.

Colorado Visual Snow Scale is a novel scale created for this study and to investigate its use in measure symptom severity. There are 11 subscales: Visual Static, Afterimages, Trails, Blue Field Entoptic Phenomenon, Floaters, Night Vision Problems, Tinnitus, Feeling of Detachment, Anxiety, Depression, Sleep Issues. Each section assess symptom severe, impact on vision, impact on daily activities, and ability to drive with scale of 0-10 wiht 10 being more severe or impairing the symptom. Total score for each subscale can range from 0-40 and total score overall can range from 0-440 and the higher the score the more severe or impairing the symptoms.

Colorado Visual Snow Scale is a novel scale created for this study and to investigate its use in measure symptom severity. There are 11 subscales: Visual Static, Afterimages, Trails, Blue Field Entoptic Phenomenon, Floaters, Night Vision Problems, Tinnitus, Feeling of Detachment, Anxiety, Depression, Sleep Issues. Each section assess symptom severe, impact on vision, impact on daily activities, and ability to drive with scale of 0-10 wiht 10 being more severe or impairing the symptom. Total score for each subscale can range from 0-40 and total score overall can range from 0-440 and the higher the score the more severe or impairing the symptoms.

Colorado Visual Snow Scale is a novel scale created for this study and to investigate its use in measure symptom severity. There are 11 subscales: Visual Static, Afterimages, Trails, Blue Field Entoptic Phenomenon, Floaters, Night Vision Problems, Tinnitus, Feeling of Detachment, Anxiety, Depression, Sleep Issues. Each section assess symptom severe, impact on vision, impact on daily activities, and ability to drive with scale of 0-10 wiht 10 being more severe or impairing the symptom. Total score for each subscale can range from 0-40 and total score overall can range from 0-440 and the higher the score the more severe or impairing the symptoms.

Colorado Visual Snow Scale is a novel scale created for this study and to investigate its use in measure symptom severity. There are 11 subscales: Visual Static, Afterimages, Trails, Blue Field Entoptic Phenomenon, Floaters, Night Vision Problems, Tinnitus, Feeling of Detachment, Anxiety, Depression, Sleep Issues. Each section assess symptom severe, impact on vision, impact on daily activities, and ability to drive with scale of 0-10 wiht 10 being more severe or impairing the symptom. Total score for each subscale can range from 0-40 and total score overall can range from 0-440 and the higher the score the more severe or impairing the symptoms.

The number of participants who drop out will be determined at the end of the study.

The VFQ-25 is a reliable and valid 25-item version of the 51-item National Eye Institute Visual Function Questionnaire (NEI-VFQ) and it is useful in clinical trials to measure quality of visual functioning. Scores range from 0-100 with higher scores indicating better quality visual functioning in everyday activities.

The VFQ-25 is a reliable and valid 25-item version of the 51-item National Eye Institute Visual Function Questionnaire (NEI-VFQ) and it is useful in clinical trials to measure quality of visual functioning. Scores range from 0-100 with higher scores indicating better quality visual functioning in everyday activities.

The VFQ-25 is a reliable and valid 25-item version of the 51-item National Eye Institute Visual Function Questionnaire (NEI-VFQ) and it is useful in clinical trials to measure quality of visual functioning. Scores range from 0-100 with higher scores indicating better quality visual functioning in everyday activities.

The VFQ-25 is a reliable and valid 25-item version of the 51-item National Eye Institute Visual Function Questionnaire (NEI-VFQ) and it is useful in clinical trials to measure quality of visual functioning. Scores range from 0-100 with higher scores indicating better quality visual functioning in everyday activities.

Screening questionnaire that measures the degree of anxiety with scores ranging from 0-21 and higher scores indicate greater anxiety. Scores of 5, 10, and 15 can be interpreted as representing mild, moderate, and severe levels of anxiety.

Screening questionnaire that measures the degree of anxiety with scores ranging from 0-21 and higher scores indicate greater anxiety. Scores of 5, 10, and 15 can be interpreted as representing mild, moderate, and severe levels of anxiety.

Screening questionnaire that measures the degree of anxiety with scores ranging from 0-21 and higher scores indicate greater anxiety. Scores of 5, 10, and 15 can be interpreted as representing mild, moderate, and severe levels of anxiety.

Screening questionnaire that measures the degree of anxiety with scores ranging from 0-21 and higher scores indicate greater anxiety. Scores of 5, 10, and 15 can be interpreted as representing mild, moderate, and severe levels of anxiety.