When the eye is not completely round, it may cause a refractive error known as astigmatism. This may affect visual acuity and require the use of glasses.
Though some people have astigmatism from birth, others may be caused by glaucoma. Glaucoma is often an inherited condition, leading to pressure build up inside the eye. This damages the optic nerve and may lead to permanent blindness. Glaucoma may also contribute to the formation of cataracts, which refers to the clouding of the ocular lens.
The most severe cases will often require surgery. The cost of cataract surgery in Singapore varies depending on each patient.
How is Astigmatism Corrected
In cataract surgery, the surgeon may be able to correct astigmatism by making an incision in the cornea and to shape the eye. The cataract, which may be contributing to astigmatism, is removed using ultrasound, and then replaced with an implant.
The new implanted lens will help the eye have a rounder shape, restoring vision. The whole process takes between 15 to 20 minutes and is an out-patient procedure. Patients only need between three to four hours of rest in the hospital before returning home. The majority of patients can return to their regular activities the following day.
How Do You Know You Have Glaucoma?
Glaucoma is a common condition, though some people do not feel any pain at all while their cataracts develop, making it difficult to catch early. Though one of the easiest ways to see if you have glaucoma is the formation of a cloudy lens in your eyes, many will not notice until the problem becomes severe.
People who have diabetes and high blood pressure are more likely to have glaucoma. Older people are also more likely to show symptoms.
As for astigmatism, common symptoms are blurred or double vision, feelings of dizziness, eyestrain and headaches.
In Singapore, over 40 per cent of blindness is caused by glaucoma. Surgery is one of the only ways to correct it, along with cataract removal.