**Core Concept**
The National Program for Control of Blindness (NPCB) is a government initiative aimed at reducing the prevalence of avoidable blindness in the country. The program involves a multi-faceted approach, including prevention, diagnosis, and treatment of eye disorders.

**Why the Correct Answer is Right**
The District Blindness Control Society (DBCS) is a key component of the NPCB, responsible for implementing the program's activities at the district level. The society is headed by the District Collector, who is the administrative head of the district. This ensures that the society is well-integrated with the district administration and can effectively coordinate with various stakeholders, including healthcare providers, community organizations, and government agencies.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as there is no evidence to suggest that the District Blindness Control Society is headed by a medical professional or an ophthalmologist.
**Option B:** This option is incorrect as the District Blindness Control Society is not headed by a representative from the Ministry of Health and Family Welfare.
**Option C:** This option is incorrect as the District Blindness Control Society is not headed by a representative from the State-level health department.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that the District Blindness Control Society plays a crucial role in implementing the National Program for Control of Blindness at the grassroots level. The society's effectiveness depends on its ability to coordinate with various stakeholders and leverage resources from the district administration and healthcare providers.

**Correct Answer: A. District Collector.**