Transcranial focused ultrasound (tFUS) is a new noninvasive way to stimulate the brain in an awake and alert person. We do not yet have an easily observable way to know whether we are in the right brain location with the correct dose for that person. We wonder if we can produce a transient change in someone's visual field, called a scotoma, and whether we can use that to determine the minimum tFUS dose for that person.

The purpose of this project is to identify the postoperative alignment of toric intraocular lenses (IOLs) in patients who have undergone cataract surgery.

The purpose of this study is to identify and measure refractive errors of the eye as well as visual symptoms after cataract surgery.

Older adults typically have trouble identifying the speech they hear, especially in noisy environments. Fortunately, compared to younger adults, older adults are better able to compensate for difficulties identifying the speech they hear by recruiting the visual system. However, the extent to which older adults can benefit from visual input, and how this influence relates to age-related changes in brain structure and function, have not been thoroughly investigated. The general purpose of this study is to determine how age-related changes in brain structure and function affect how well people hear and see. This study seeks participants with normal hearing to mild hearing loss, who also have normal or corrected-to-normal vision.

Intacs® Corneal Implants is a FDA Humanitarian Use Device (HUD) designed for the reduction or elimination of myopia and astigmatism in patients with keratoconus.