Tirohanga pōhara Low vision and blindness
Types of low vision
There are several types of low vision, determined by the disease or condition that caused your low vision.
The most common types of low vision are:
- central vision loss (not being able to see things in the centre of your vision)
- peripheral vision loss (not being able to see things out of the corners of your eyes)
- night blindness (not being able to see in low light)
- blurry or hazy vision.
Causes of low vision and blindness
Low vision and blindness can be caused by conditions that only affect your eye or affect your whole body. These conditions include:
- age-related macular degeneration
- glaucoma
- diabetic retinopathy
- cataracts
- eye cancer
- albinism
- brain injury
- genetic conditions such as retinitis pigmentosa.
Symptoms of low vision and blindness
You may have low vision if you cannot see well enough to do things like:
- read
- drive
- recognise people’s faces
- tell colours apart
- see your TV or computer screen clearly.
Diagnosing low vision and blindness
If you notice any changes in your vision or are concerned about your eyesight, see your optometrist, healthcare provider, or ophthalmologist (specialist eye doctor).
They will ask you questions about your vision and perform an eye examination.
Treating low vision and blindness
The treatment depends on the cause of your low vision or blindness. Some conditions such as diabetic retinopathy can be treated by laser or eye surgery to restore and improve your vision.
Conditions such as age-related macular degeneration cannot be cured. But there are vision aids to help you do tasks, and treatments to help prevent further loss of vision.
Preventing low vision and blindness
It is important to have regular eye examinations so any eye problems you develop are diagnosed early. This means the problem can be treated as soon as possible.
Have an eye examination every 2 years after the age of 40, unless your optometrist or ophthalmologist suggests otherwise.
After 65, you may have them more often, so your optometrist can diagnose and treat any sight-threatening conditions, such as glaucoma and age-related macular degeneration (ARMD) as soon as possible.
Related websites
YouTube external link
Videos about causes of vision loss, showing they affect sight. Produced by Blind Low Vision NZ.
Blind and Low Vision NZ external link
Information and support for people with low vision.
Healthify external link
For personal stories about coping with low vision and blindness, follow the link, scroll down the page and open the 'Personal stories' block.
Clinical review
This content was written by HealthInfo clinical advisers. It has been adapted for Health Information and Services.