According to Dr. Uday Tekchandani, Consultant Ophthalmologist at Dr Agarwal Eye Hospital, Wadala, Mumbai (India), two common eye conditions that often cause concern are cataracts and glaucoma. While both can lead to vision loss, they are fundamentally different in terms of causes, symptoms, and treatments. Understanding these differences is essential for effective prevention and management.
What is cataract?
According to Dr. Tekchandani, cataracts are a condition in which the clear lens of the eye becomes cloudy, causing vision loss. The lens is an important part that helps focus light on the retina, and when it becomes cloudy, light cannot pass through, leading to reduced vision.
Cataracts are mainly associated with aging, but can also be caused by eye injury, medical conditions such as diabetes, long-term steroid use, or genetics.
Symptom
Blurred vision or blurred vision (like looking through a fog).
Difficulty seeing in low light conditions.
Vision becomes blurred over time.
Changes in vision (for example, seeing halos around lights).
Treatment: Lens replacement surgery is the main treatment for cataracts. In this surgery, the cloudy lens is replaced with an artificial lens.
What is glaucoma?
"Glaucoma is a group of eye diseases that cause damage to the optic nerve, usually due to high intraocular pressure (pressure inside the eye). Long-term glaucoma can gradually damage the nerve fibers of the optic nerve and lead to permanent vision loss," explains Dr. Tekchandani.
The exact cause of glaucoma is not fully understood, but it is often associated with increased pressure within the eye. It may be caused by increased production of fluid in the eye or by a blockage in the flow of fluid, leading to a buildup of fluid and increased pressure.
Symptom
The early stages are often asymptomatic (no pain or discomfort), so the disease is often detected through routine eye exams.
As the disease progresses, people may lose peripheral vision (outside vision) and eventually central vision.
If left untreated, the disease can lead to blindness.
Treatment: Treatment for glaucoma usually involves using eye drops to reduce pressure in the eye, lifestyle changes. In some severe cases, surgery or laser may be needed to reduce pressure in the eye.
Conclude
“Although cataracts and glaucoma both affect vision, they do so in different ways and require different treatments,” says Dr. Tekchandani. “Regular eye exams are essential for early detection and management of both conditions.”
