What percentage of the legally blind population cannot see at all?

The percentage of the legally blind population that cannot see at all is approximately 10%. In terms of understanding legal blindness, it is important to know that legal blindness is defined as having 20/200 vision or less in the better eye with the best possible correction or having a visual field of 20 degrees or less. Within this group, a subset of individuals has no light perception, which constitutes those who cannot see at all. Research and statistics have shown that around 10% of legally blind individuals fall into this category, making option B the correct choice. This figure highlights the significant diversity in vision loss among those who are classified as legally blind, with some individuals retaining some degree of vision, while others have none at all. This is a critical point for understanding the implications for patient care and rehabilitation strategies in ophthalmology.