Dave Plowman (News) wrote:
In article ,
Dave Baker wrote:
Went for a free eye test at Tesco in Slough today cos my 20 year old
frames are broken and I need a new pair. Surprisingly my prescription
hasn't changed much more than a jot in nearly 35 years. Back in 1977
I was minus 1.75 dioptres in both eyes (short sighted) with a touch
of astigmatism. The astigmatism moved around a bit over the various
tests over the years but the basic sphere correction has stayed the
same. My old specs work just as well as they ever did. I thought
eyes might get worse over time but apparently not. I'm still minus
1.75 in both eyes and can still read the smallest print on the
charts despite the inevitable eye lense hardening over the years.

The chart is nominally at infinity so natural ageing of the cornea
shouldn't make a difference. With any correction, obviously.

My prescription hasn't changed in over 40 years and I have a heavy
astigmatism. Down, I'm told, to wearing hard contact lenses. Stops the
lens changing shape.

Sorry to break in- so to speak. I suffer from Glaucoma and the medications I
take increase the likelihood and onset of cataracts. Now affecting me though
I was never advised that this was likely. Other sufferers and pupative
sufferers beware.