A study published in an international journal found that Karachi had a lot of symptoms of dry eye disease.
It also shows a number of factors that can affect the disease, such as age, contact lens wear, ocular allergies, hypertension and diabetes.
The study, entitled 'Distribution of Ocular Disease Index Scores in a Non-Clinical Population and its Affiliation: Karachi Ocular Disease Study', was published last year in the Curious Journal of Medical Science.
The first study of its kind in Pakistan was conducted in 2019 by a team of researchers led by Dr. Noman Hashmani of the Hashmani Group of Hospitals.
According to experts, dry eye disease, also known as dry eye syndrome, is a common condition that occurs when tears are insufficient to provide adequate moisture to the eyes.
This instability of tears occurs for a number of reasons and causes inflammation and damage to the surface of the eye.
The study studied a total of 2,433 people over the age of 18 who did not suffer from any eye disease.
It found that 35 to 60 percent of the subjects under study had dry eyes, with an average age of less than 30 years.
It has also been found that old age, smoking and diabetes increase the risk of the disease.
"Many studies have identified women's gender as a risk factor for dry eye disease. A study in Jordan found no effect on gender at an early age, but women over the age of 45 have been affected. Androgens regulate the latent activity of the lacrimal glands and their levels are in line with the symptoms of dry eye disease.
"Therefore, the theory has been put forward that due to the low baseline of androgens in women, the glands reach the minimum level required for glandular function in older women, moreover, estrogen is secreted by the meibomian glands (smaller It has been shown to stimulate the activity of small oil glands that form in the gaps in the eyelids, which exacerbates the problem in women after childbirth.
However, it does not show statistically significant gender affiliation, although the disease is directly linked to aging, smoking and diabetes.
Past international studies have shown that some of the risk factors include medications for high blood pressure.
