Sunetra, who plays Dr Zoe Hanna on medical drama Casualty, has been an ambassador for Sightsavers since 2009.
The petition is part of our campaign calling on the government to make sure people with disabilities are included in global development.
The Global Trachoma Mapping Project, which aims to find out where trachoma is most prevalent, is poised to hit its two-year target nine months early.
The government has announced it will set out its commitment to ensuring that all people with disabilities living in developing countries will have a voice.
The government was today expected to make its decision on whether to prioritise people with disabilities in global aid, but the outcome won’t be announced immediately.