Thank you for your reply.
First, diets that are fortified with antioxidants can slow cataract formation, but would not reverse the already formed cataract. It's possible that you are seeing a little better now due to the early change in your natural lens refractive index as a result of the early development of cataract.
Since you are farsighted, hardening of the lens from cataract (during the early stages only) can cause light rays coming into your eye to be bent more, and therefore making you need little or no lens power (for distance view) from glasses to focus the images exactly on the back of the eye (retina) where the images are processed. For reading closing, you may even find yourself needing less of lens power. This phenomenon is called "second sight" of early cataract development.
However, in dim light you may have more problem and haze, as well as in glare (very bright light). The slight double vision and/or ghost image that you notice sometimes may reflect the non-homogeneous nature of cataract formation in the lens. The differences in the density of of the lens from the cataract effect, causing differences in the focusing/bending of the of light rays as they pass the lens.
I would suggest that since you can tolerate your vision now to wait until you feel a real need. However, if you find a very good eye surgeon, the removal of the cataract these days takes less than 15 minutes per eye (both eyes are usually done 1-2 weeks apart depending on the surgeon), with excellent vision. The important thing is to use an experienced eye surgeon.
So, without any rush, make appointment and see an eye surgeon. Note that the window period for the "second sight" can be anywhere from 6 months to 1 year, then the vision will deteriorate faster. Now, the extent to which the diet will slow the process down, I cannot speculate. I trust that you would do well.
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Please note that this answer is for information only. It cannot be substituted for the visit to or the recommendation of your doctor.