Direction (Q. 1 - 10) : Read the following passage carefully and answer the questions given below it.
Glaucoma is the second leading cause of preventable blindness in India, where nearly 12 million Indians are estimated to be affected by 2010 and 16 million by 2020. Most people with glaucoma are unaware of the disease. Early detection and control are the keys to preserve vision as visual loss occurring due to this disease cannot be regained.
The disease is characterised by changes in the optic nerve (the nerve that connects the eye to the brain) with associated visual field defects (the area seen by the eye). Left untreated, it leads to progressive loss of vision and may eventually result in blindness. The two types of glaucoma are open angle or closure angle glaucoma.
The disease can also occur in children, though such cases are rare. In these cases, the disease is more severe and often requires surgery.
As the outer portion of the visual field is the first to be affected, and most types of glaucoma are asymptomatic, the disease is often diagnosed only after significant vision has been lost. Therefore, early diagnosis is essential so as to ensure that treatment to halt/slow its progression can be instituted.
Which of the following statements is/are correct in the context of the passage ?
A) Prevention of glaucoma is possible only if detected early.
B) Loss of eye sight due to glaucoma can be regained if detected at a primary stage.