Gadgets

Study stresses on regular eye check-up for glaucoma patients

ANI | July 19, 2020 03:27 PM
Representative image

Bradford [UK], July 19 (ANI): As per a recent study, people with early-stage glaucoma see the contrast of visible objects in a very similar way to people without the condition.

Research by the University of Bradford (UK) demonstrated that the brain compensates for the changes in the eye caused by glaucoma when looking at objects with everyday levels of contrast. The findings add to the understanding of why glaucoma patients report few early symptoms of the disease and may not seek testing until their disease is more advanced.

Glaucoma is a common eye condition affecting half a million people in Britain, where the optic nerve which connects the eye to the brain becomes damaged. It develops slowly over many years and affects peripheral vision first. If untreated, glaucoma results in permanent vision loss.

Glaucoma makes it harder to see the contrast - the differences between shades of light and dark - so the eyes are less able to detect low contrast objects. But until now it's not been clear if this contrast sensitivity loss means that patients with glaucoma see visible objects in a different way from healthy people.

The University of Bradford team has shown that people with glaucoma see detectable contrast in the same way as healthy patients, despite their measurable vision loss.

In the study, 20 participants with early- to moderate- stage glaucoma had their disease confirmed, and their areas of peripheral vision loss mapped. They were then asked to respond to a screen display of patterned patches.

They adjusted the controls until an image in their poor areas of vision looked equally as bright or dim as a central patterned patch. An eye tracker was used to ensure each patient was looking in the correct place before the central patch could be seen. A control group of healthy participants was tested in the same way.

The researchers found that participants with glaucoma didn't see the image as paler, or 'greyed out' in any way; instead, they saw it in exactly the same way as people with healthy vision. The results suggest that glaucoma patients' brains are compensating for damage to the optic nerve.

"This underlines why it's so important to get eyes tested routinely so that glaucoma can be picked up before damage is established. It ties in with the fact that people who have glaucoma initially don't report any symptoms: their brains are successfully overcoming a loss of contrast sight," said Dr Jonathan Denniss, a qualified optometrist and lecturer at the University of Bradford, led the study.

"It's always struck me as strange that we all accept the need for routine dental checks to maintain the health of our teeth and mouth, but that routine eye checks among the general population are not considered as important. This is a reminder to get your eyes checked regularly, even if they seem to be fine," Denniss added. (ANI)

Have something to say? Post your comment
Must Read
NRI Woman, her father and relative booked on the complaint of husband
NRI Woman, her father and relative booked on the complaint of husband
Punjab Police busts another pro-Khalistan terror module with arrest of two
Punjab Police busts another pro-Khalistan terror module with arrest of two
Punjab CS assures private hospitals of full state govt support to address concerns in Covid fight
Punjab CS assures private hospitals of full state govt support to address concerns in Covid fight
Actress Mandy Takhar files complaint against fake video
Actress Mandy Takhar files complaint against fake video
Industry Dept extends timeline migration from FIIP to IBDP till Dec 31
Industry Dept extends timeline migration from FIIP to IBDP till Dec 31
Under Vijay Inder Singla's smart school policy about 6,000 schools have been converted into Smart Schools
Under Vijay Inder Singla's smart school policy about 6,000 schools have been converted into Smart Schools
Water cannon salute given to Rafale aircraft after air display at IAF airbase in Ambala
Water cannon salute given to Rafale aircraft after air display at IAF airbase in Ambala
Punjab CM announces relaxation in timings for non-essential shops, hotels & restaurants in urban areas till 9 pm
Punjab CM announces relaxation in timings for non-essential shops, hotels & restaurants in urban areas till 9 pm
Punjab gross GST collection stands at Rs.987.20 crore during August 2020
Punjab gross GST collection stands at Rs.987.20 crore during August 2020
India bans 118 more mobile apps including PUBG, WeChat
India bans 118 more mobile apps including PUBG, WeChat
Former President Pranab Mukherjee passes away
Former President Pranab Mukherjee passes away
Punjab Government issues Revised Guidelines for International Arrivals
Punjab Government issues Revised Guidelines for International Arrivals