OT Vision question...you guys know everything ...

Yes, colours end up being a bit brighter.

A detached retina led to a cataract in my left eye. After that was fixed I was sitting in church looking up at the clerestory windows and discovered that they were not in fact blacked out but a very deep blue.

So I have different colour rendition in each eye, the original right being yellower. Not a huge difference but noticeable; about half the difference between daylight and tungsten colour film.

yes, but the eyeball is shaped by the skull it fits into.

Interesting. I have always (well, I first noticed it when I was a teenager) had a slight difference in colour perception - my right eye sees warmer tones than does my left eye.

Led to it being spotted? Or do you feel one caused the other?

They must be able to measure the distance between the lens and the retina.

The opticians I go to for tests offer:

Seeing Beneath

An OCT scans the layers beneath the surface of the retina, which are not visible during a routine eye examination. OCT is available at <optician name> for an extra charge of £15. OCT is not available as part of an NHS Eye Examination.

What is your opinion of that? Can it find much more?

(I did choose to have it.)

OCT is fantastic, pretty much like MRI for the eyeball. You get to see what you wouldn't otherwise, a cross section of the layers in the retina. There are things it could find that require urgent referral that wouldn't otherwise be seen.

Thank you. I was concerned as a previous optician had identified some possible issues and advised me to make sure they were regularly checked. Therefore, £15 seemed well worth it. But it is good to know that OCT can do so much and that the price is good.

AIUI that plus the shape of the cornea (to get the power of that as a lens). Add the strength of the news lens and where it'll sit to get the basic optical setup.

The length can be done with ultrasound but I've no clue how they do the corneal power. Possibly now the OCT mentioned in this thread?

Consequence of the op to repair the detached retina(pneumatic retinopexy) . Was warned at the time that it was a likely risk.

I see a proper doctor once a year at a clinic funded by the NHS as my father had glaucoma. They'll do all that is needed; if I need a new prescription I'll get one at ASDA. (I hope they don't feel the need to sell me unnecessary specs.)

I'm just pointing out that it isn't the rip off it's perceived to be.

The important word there is perceivable.

You cannot, for example perceive that away from the centre of your vision you see black and white only.

(You can test for that incidentally if you have an set of Christmas lights and a helper - get them to expose one in your peripheral vision.)

Andy

This tends to vary a great deal between people. At one time is was common to test if you could tell red from green in peripheral vision - for sailors, etc. And just how far round it has to be before you can't see the difference varies enormously. Age might well play a part too.

And that's as well as taking into account how many males are red/green colour blind in different degrees.

Lots of 'pensioners' are still at work and earning serious amounts of money. Take the House of Lords just for starters.

NI is just tax with a cuddly name. Why should these people and their employers be excused the not-insignificant NI contribution that everyone else has to pay ?.

Just because someone's physical strength is not as good as it was, does not make them decrepit, but even the House of Lords expects you to retire at

1. At 80, I was elected Chairman of a Charity; when I suggested that I might be a bit old for the role, I was told "we don't have an ageist policy"

Over-generous is a polite way of putting it.

You really think everyone in the HofL earns their money?