Local, regional, and statewide news continually updated from thousands of sources on the web. Tell me when there are new stories. DPS investigating Thursday morning fatality in Yoakum County.
An eyespot, often called a stigma (derived from Greek for spot), is a heavily-pigmented organelle located near the cell membrane that seems to function in light reception in â¦ certain single-celled organisms.
Scleral Contact Lenses for Other Eye Problems. In addition to keratoconus, scleral contact lenses can be used for eyes that have undergone a cornea transplant, and for people with severe dry eyes caused by conditions such as Sjogren's syndrome, graft-versus-host disease (GVHD) and Stevens-Johnson syndrome.