what is lca?
 The Labor Condition Application (LCA) is an application filed by prospective employers on behalf of workers applying for work authorization for the non-immigrant statuses H-1B, H-1B1 (a variant of H-1B for people from Singapore and Chile) and E-3. or 

Leber's Congenital Amaurosis (LCA) is a rare genetic disorder in which retinal dysfunction causes vision loss, often from birth. 