as some of you might already know, Im trying to help my son with his myopia. His prescription is -1D sphere on both eyes and -1D cylinder also on both eyes.
I measured his eyes and when the light is strong, he can read 20/25, sometimes even 20/20 without any correction. Therefore I decided to keep him without his glasses to see how he goes. I then thought that either he stays without glasses or I will consider it as a zero diopter reset and get him normalised glasses from Zenni after his zero diopter reset.
The teachers in his preschool noticed that he squints his eyes quite a lot when he is doing some work inside the room. Of course he does, there is way less light indoors than outdoors. He squints his eyes also when he watches TV.
That obviously is a sign for me, that he will still need some normalised glasses. We are coming into the summer time soon, so I keep doing with him the Astigmatism exercises that Peter (Astigmatism Assassin) adviced me to do. Thank you Peter, that app you referred me to is great!!! The thing is that we live in Central Europe and the light here is not as strong as in Australia for example where I used to live or in Asia where I used to go for a vacation.
The normalised glasses I ordered for him has this correction:
-0.5D sphere on both eyes and -0.5D cylinder on both eyes
I know, I know, one should not lower BOTH cylinder and sphere at the same time. But he does not go from -1D sphere and -1D cylinder to the normalised, he will go from zero diopter reset to his new normalised. He has been without glasses for 3 weeks now and it will take another 3-4 weeks till his normalised come. I then want to keep him without glasses for additional week or two, so that his diopter reset will be 2 months altogether.
Will that be enough to be safe with his normalised? Or will that upset his visual cortex? I measured him yesterday with my test lens kit and he can see TV quite well with -0.5D sphere and -0.5D cylinder. He is able to read 20/30 on Snellen with this correction indoors - but like I said we have Spring now and the sun is quite weak, that is the downside of living in Central Europe.
I felt a bit guilty about ordering his new normalised, so to be on the safe side, I ordered another pair of glasses today, with his sphere being -1D on both eyes (that means unchanged from his full correction glasses prescribed by his eye doctor) and his astigmatism correction is -0.5D.
In case he cannot deal with -0.5D sphere and -0.5 cylinder correction and he is still squinting, I will give him that -1D sphere and -0.5D cylinder. I will keep doing his astigmatism and AF exercises till September on regular basis now, so that when he starts his school, his normalised will be either -0.5D sphere and -0.5D cylinder or even just -0.5D sphere and no cylinder as that will be corrected with exercises already.
Maybe someone here has similar experience and has lowered both sphere and cylinder after couple of weeks of zero dioptre reset and could maybe give me some advice. I know that no one lives behing my son´s eyes, he needs to try both normalised and we will see what works better, but maybe you might have some practical advice.