Need opinion on setting monofocal to slight myopia for okay vision for driving and computer

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I am considering targetting -0.5 or -1D with toric monofocal to be able to drive and reading at computer distance without glasses. I know it will be a compromise in sharpness of vision on both ends, but in the opthalmologist office it is not thatbad at all! ( He gave me a temporary glasses to look at the computer and the streets thru the window). I was so happy for a while but something just hit me. How about my vision at night? I am afraid I will lose too much depth of view with my enlarged pupil and my vision will get blurry for both driving and computer reading, defeating the whole purpose.

Any ideas?

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7 Replies

  • Posted

    In my own experiences, optimal computer viewing requires -1.50 to -2.00D. Outside of this range it will depend on how "accommodation" your eyes are. Some posted here that their eyes are plano but can see computer just fine. I consider those people exception not the norm.

    Distance vision is a little more forgiving, anything better than -1.00D should be adequate (better than 20/40).

    Sounds like mini-monovision will suit your need. I think you will be quite happy with the combination of -1.00/-1.75. This combo will also give you good night vision.

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  • Posted

    I think that you will be making too much of a compromise by targeting both eyes for -0.5D or -1.0D. You will end up with less than the desirable vision at far as well as intermediate distances.

    I will suggest aiming for -0.25D (or -0.5D) for the dominant eye and about -1.5 D for the non-dominant eye. You should be able to get used to this amount of monovision relatively easily.

    Also, you mention that you are getting toric monofocal lenses. How much of astigmatism do you have? A small amount of astigmatism is actually better to have, if you are willing to have less-than-best vision in lieu of a reasonable vision at a wider distance range.

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    • Posted

      Hi at201, thanks for your input. Actually the cataracts in my LE is still mild and I will only do surgery on my RE. Then I will decide on my LE based on what I can learn from the RE. Currently, I am planning to go a little Myopia as I mentioned to make a good comprise, but I am afraid it will turned out to be an bad choice with inadequate far and intermediate vision.

      Do you have any idea how enlarged pupils will degrade the depth of view? I am most concern about my plan doesn't work in night time. Then I will be better off doing plano, at least one end will be crisp.

      Also, thanks for mentioning astimatisim will give you wider depth of view. I need to read up on that.

      Thanks

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    • Posted

      Your best choice for the IOL for the right eye may depend on what your prescription is for the left eye right now and which eye is dominant. Basically, it will good to have one eye end up being good for far distance and the other one good for intermediate distance. Also, it will be good to not have more than 1D - 1.5 D difference in prescription for the 2 eyes,  so that it is easier for you to adjust to mini-monovision.
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    • Posted

      My RE is dominant and left eye is -5D with -1D astimatism. My opthalmologist says I will use contacts on LE after IOL surgery on RE is done.

      One approach my opthalmologist suggests is to do -1D on my RE ( based on my positive experience on the temporary -1D glasses at his office), see where my RE settled down to and do mini monovision on LE accordingly when the cataracts there got worse.

      Thanks for your input.

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    • Posted

      Are you used to using contact lenses? If you are, that definitely makes it easier for you try different prescriptions ahead of time.

      Looking at the fact that your right eye is dominant and looking at the prescription of your left eye, my suggestion will be aim for -0.25D for the right eye (hoping to end up between -0.5D and plano). Then with the 2 eyes together, if you are lucky, you may not even have to wear a contact lens in the left eye to see well at intermediate as well as far distances using both eyes. If you end up needing a little better vision for the left eye to see better at the intermediate distance, you can try aiming for -1.0D to -1.5D range with a contact lens for the left eye to see which one works the best.works out best for you.

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