To define a health problem, prevalence of corneal xerosis should be -
- corneal xerosis a serious problem in which cornea appears dull, dr and non wettable and eventually opaque. - To define a health problem, prevalence of corneal xerosis should be more than 0.01%. Reference : Park's textbook of preventive and social medicine, 23rd edition, pg no:616 <\p>
>1%
>0.5%
>0.01%
>0.05%
Nutrition and health