Thanmathra is a 2005 Indian Malayalam-language drama film written and directed by Blessy and starring Mohanlal, Meera Vasudevan and Arjun Lal. Based on Padmarajan's short story "Orma", it portrays the effects of Alzheimer's disease on the life of Ramesan Nair (Mohanlal) and his family. The film collected three times its budget at the box-office and had a 150-day theatrical run. It is considered as one of the greatest performances by Mohanlal.