Macular degeneration is a chronic eye disorder where the macula gradually deteriorates. These two conditions have been discussed in detail below but there may be other causes of visual disturbances. Visual disturbances are usually constant and worsen over time in macular degeneration but it is episodic meaning that it comes and goes in ocular migraines. Causes of Wavy VisionĪlthough there are many different conditions that may cause visual disturbances which could be described as wavy, the two conditions where wavy lines is a distinct symptom are macular degeneration and ocular migraines. It is in the visual centers within the brain that these impulses are ‘decoded’ to provide the sense of vision. The light stimulates receptors in the retina, which is then converted into nerve impulses that are relayed to the brain. The macula is the oval-shaped area of the retina which is responsible for visual acuity. It is then further bent by the lens to ensure that a clear image is focused on the retina, the inner lining of the eye. Light enters through the cornea (the clear front part of the eyeball) where it is partially bent (refraction). It is important to understand how human vision works to further understand where problems may arise. It is not uncommon for some people to describe blurred vision or even clouded vision as causing images to seem wavy. At other times wavy or zig-zag lines may surround an isolated spot of distorted vision. This disturbance is known as metamorphopsia. When people complain about wavy lines in their vision, they usually refer to straight lines looking wavy or zig-zagged. This is enabled by a combination of factors involving the eye, nerves and brain. There is a limitation to human vision but well-lit images that are within a reasonable distance should be ‘crisp and clear’. Visual acuity means that images can be seen clearly and are well defined. Wavy lines may be one such cause for concern. However, when vision is disturbed in other ways like clouding, narrowing or even blurring that cannot be corrected with lenses or surgery, we often get concerned about the more serious eye-related problems. We no longer see these vision-related problems as a hindrance. Common vision problems like short-sightedness are easily corrected these days with spectacles, contact lenses or quick and inexpensive laser surgery. Most of us take our vision for granted, as we do with our other senses.
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