I asked my optometrist if PD could affect my eyes. Her answer was a definite "NO". My neurologist didn't think so. I found a few reliable sites that opined differently. Here is a list of the possible effects PD has on eyesight:
- Blurred vision or difficulty in focusing may be due to difficulty in moving the eyes or due to the side effects of Parkinson’s drug therapy, especially anticholinergics.
- Double vision usually occurs in Parkinson’s disease due to problems in moving the eyes in alignment from side to side, such as when reading. This occurs as a result of impaired coordination and fatigue of the muscles moving the eyeballs.
- Excessive tearing (lachrymation) of the eyes.
- Dry eyes is caused by reduced blinking of the eyes.
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Difficulty in moving the eyes may be manifested in two ways :
(i) difficulty in starting a movement of the eyes or
(ii) problem with moving the eyes quickly when following a fast moving object. Instead of moving smoothly, the eyes move in a slow and jerky way. Driving a vehicle may pose difficulties. - Sensitivity to contrast – there may be difficulty in seeing in dim light, or making out light colored objects against a light background, or difficulty in reading fine print.
- Color vision may be affected for differentiating between slight color differences, especially for shades of blue or blue-green.
- Problem with visuo-spatial orientation or depth perception – the person may have difficulty in assessing the distance between objects and may need to reach out to touch the sides of the wall or objects while walking through a narrow place. This may create problems while walking or driving.
- Glaucoma and anti-Parkinson’s medication – levodopa and anticholinergics should be used with caution in patients with glaucoma.
- Some patients with Parkinson’s disease cannot judge the speed of moving objects, which may be dangerous if driving or trying to cross the street.
- Hallucinations and illusions or visual misinterpretations are more likely to occur in those people who have had Parkinson’s disease for a long time. It may be due to the disease itself or due to anti-Parkinson drugs.
- Blepharospasm or involuntary spasm of the eyelids
Pretty scary, isn't it?
As far as those artificial tears are concerned, I must be patient and calm and improve on my technique. I consider myself lucky. When I get those fake tears into my eye then alles ist gut. I would hate to suffer from one of the other symptoms. I am lucky in so many aspects of the disease. So lucky I may have to become a follower of the Third Eye folks.
So be it.
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