1,2) Optometrist Alfred Corwin, 84, gives Silvia Martinez, 32, an ophthalmoscopy exam inside of  Santa Monica Lions Club's    (District 4-L3)  Mobile Screening Unit (MSU)  on Saturday, December 22, 2007. The MSU screens for sight, blood pressure and hearing. 3) Silvia  takes  a Non Contact Tonometry (NCT) exam (air puff test). The NCT screens for Glaucoma, one of the leading causes of vision loss that affects one in 17 people aged 40 or over. 4) Silvia takes a hearing test during the screening, she raises her hand when she hears a noise. 5) Santa Monica Lion Club president, Frank Schwengel, checks Silvia's blood pressure during her screening on Saturday. 6) The  Mobile Screening Unit, a 1964 Fleetwood RV with  18,000 miles,  staged a free community  screening  at Olympic Blvd on Saturday. The Lions club is currently  raising money to purchase a new MSC and is seeking corporate sponsorships.