In the new study, which was published in the journal Nature Communications, Gail Davies, from the Center for Cognitive Ageing and Cognitive Epidemiology at the University of Edinburgh, and colleagues involved 300,486 individuals who are between 16 and 102 years old. When we ask for this with them, they would say they are wearing it for a headache and to protect the eyes from lights of computer/ mobile display screens.
The study is said to be the largest genetic study of cognitive function and as a result, they have identified some genetic variations between the persons who wear glasses and un-wearers on the thinking capacity.
All the volunteers were asked to submit their DNA samples, answer the questionnaires, and underwent tests created to give a measure of their general cognitive ability.
Smarter people were also less likely to have certain chronic health problems like high blood pressure and depression and were more likely to live longer.
Criticisers commented that this study was based on participants of European origin and the result may not be applicable to people in other geographical locations.
Lead researcher professor Ian Deary said the discovery of gene patterns relating to cleverness could help scientists further research diseases such as Alzheimer's.
"Now with 100 times that number of participants, and with more than 200 scientists working together, we have discovered nearly 150 genetic regions that are related to how clever people are".
However, the researchers said there was no proof of a defined link between the two factors.
The team from the University of Edinburgh found "genetic overlap" between "general cognitive function, reaction time, and many health variables including eyesight, hypertension, and longevity".
"We are trying to map out constellations of genes that work together to create our amazingly complex and adaptive brain".