Evaluation of Effect of Scatter on Visual Performance

Potential subjects must satisfy all of the following criteria to be enrolled in the study: 1. Read, understand, and sign the Statement of Informed Consent and receive a fully executed copy of the form. 2. Appear able and willing to adhere to the instructions set forth in this clinical protocol. 3. Be between 18 and 69 years of age (inclusive) at the time of screening. 4. Habitually wear soft contact lenses (either spherical or multifocal) in both eyes in a daily reusable or daily disposable wear modality (i.e., not extended wear modality). Habitual wearer is defined as a minimum of 6 hours per day, for a minimum of 2 days per week during the past 30 days. 5. Possess a wearable pair of spectacles that provide correction for distance vision. 6. Have the spherical component of their vertex-corrected distance refraction within the range +3.00 to -5.00 DS (inclusive) in both eyes. 7. Have the magnitude of the cylindrical component of their vertex-corrected distance refraction below 1.00 DC in both eyes. 8. Have best corrected monocular distance VA of 20/25 or better in each eye. 9. Have Near Addition with Add refinement following BCC\<0.75D (Non-presbyopic group only). 10. Have Near Addition with Add refinement following BCC≥0.75D (Presbyopic group only). Potential subjects who meet any of the following criteria will be excluded from participating in the study: 1. Be currently pregnant or lactating. 2. Be diabetic. 3. Be currently using any ocular medications or have an ocular …