It seems to me that quite a number of people are suffering from eye disorders these days.
I personally know 3 people who has only one functioning eye.
One of them, who's about my age, has had a cracked retina in one eye for 20 years already.
A sister-in-law is blind in one eye due to hypertension.
A dear friend who is in her mid-forties woke up one morning and realised she couldn't see anything through her left eye. Specialists couldn't find anything wrong and they think it's a neural issue.
And then there's my nephew who only recently recovered from surgery to
treat a partial retinal detachment due to high shortsightedness.
One of my sisters has perfect vision in one eye but myopic in the
other. So she wears a contact lens in that eye only... but can survive
without it in any case.
I used to have perfect eyesight but now need help for reading... so I am using multi focals for the convenience.
I've come to realise as I approach ripe old age (keyword being
APPROACH... ahem) that eyesight cannot be taken for granted... so much
so that eye health should be part of our check-up routine.
More time walking in the park and less surfing on our mobiles should do our eyes a world of good.
And I would say Polaroids would be good to use when out in blazing sun.
I am actually in awe of my friends who are now seeing in mono, that
they are pretty philosophical about their affliction and are very
grateful to Allah for bestowing the rizqi of the good "spare" eye.
This verse from the Holy Quran reminds:
"Have they not traveled in the land so that they should have hearts with
which to feel and ears with which to hear? For indeed it is not the eyes
that grow blind – but it is the hearts, which are within the bosoms,
that grow blind. [Sûrah al-Hajj: 46]"
As for my friends... there's no doubt they have sight within their hearts...