Child of 12 years. I am sure he does not memorize the lines so I trust him when he says he can see whatever he can see
2019 prescription : Optometrist A
R -1.5 -1.5 cyl
L -1.5 -2.5 cyl
Result of wearing these glasses: Terrible nausea. He never wore them.
We were in India after that… The specialist there said seeing around 20/30 is good enough and felt the prescription given was too strong. He gave us these. Child could see 20/30 with them. Even now, he can see the same but it has gone down a bit in that he can see only a few characters of 20/30.
L -1.0 -0.75 cyl
Now, 2020 November prescription : Specssavers
L -3.25 -0.75 cyl
Result of wearing these glasses: Terrible nausea. He can see the 20/10 line too!
On checking at home, he seems to be able to see 20/20 with around -2 on both eyes.
My query is :
My child can see the 20/70 line clearly without glasses. His friend has -2 lenses(tested in Sep 2020 and so up to date) and cannot see any lines without glasses.
How is this possible that my son has been prescribed higher dioptres than the other child ?
DId the astigmatism disappear in the latest test due to the reduced glasses he wore last 1 year? Shocked and pleased - but wondering if that correction has been added to the linear and so its -3.25 now?? Note that last year and this year’s tests were done at different places and I did not share the old prescription at the recent place.
Any insights are appreciated. Not asking for any dioptre advice - just trying to understand how to read the prescription.