New Delhi: In a significant achievement, India has reduced the prevalence of visual impairment by about 52 per cent, surpassing the target of 25 set by World Health Organisation (WHO), according to National Blindness Visually Impaired Survey (2015- 2019).
The survey was conducted by the health ministry in collaboration with the All India Institute of Medical Sciences (AIIMS)-RP Eye Centre. It was conducted across 24 states and Union Territories and nearly 1.11 lakh people were tested.
“In 2006-7, National Blindness Survey report done by the health ministry recorded the prevalence of visual impairment at about 5.30 per cent. Now, this has come down to 2.55 per cent as per the latest survey results. Similarly, the prevalence of blindness has also come down to 0.36 per cent whereas in 2006-7 survey findings it was recorded 0.68 per cent,” said Dr Atul Kumar, Chief of RP Eye Center at AIIMS.
The WHO Global Action Plan for Universal Eye Health (2014-19) aims to reduce the prevalence of avoidable visual impairment by 25 per cent by 2019 from the baseline levels of 2010.
“We have successfully achieved the target of reducing visual impairment by 52 per cent,” said Dr Praveen Vashist at RP Eye Centre at AIIMS who was the principal investigator of the survey.
WHO reported earlier this week that at least 2.2 billion people in the world have vision impairment of whom about 1 billion have a condition that could have been prevented or is yet to be addressed.
The survey was released by Health and Family Welfare Minister Harsh Vardhan at Prithvi Bhawan here to mark the World Sight Day. He also released findings of National Diabetes and Diabetic Retinopathy Survey, 2015-19.
On Wednesday, ANI had reported that cataract still remains the leading cause of blindness in India as per the latest findings. It is primarily due to an increase in life expectancy and the rise in population of senior citizens.
A Rapid Assessment Avoidable of Blindness (RAAB-6) methodology was used to conduct the survey.
RAAB-6 is a widely accepted method which is being used worldwide to detect the prevalence of blindness in people above 50 years of age.
Explaining the definition of visual impairment, Dr Vashist said that a normal person should be able to read from a distance from 18 metres but if a person is not able to read from a distance of 6 metres, he will be treated as suffering from visual impairment.
India changed the definition of blindness as per the criteria of WHO in 2017. According to the new definition, visual impairment is defined as having visual acuity < 6/18 in the better eye with available correction. Blindness is defined as visual acuity < 3/60 in the better eye with available correction.