In polar bears, it protects the eyes from snow blindness.

If you look at it, you're going to be blind, either temporarily or permanently.

Orientation Agnosia an inability to judge or determine orientation of objects.

Well, I was born with a rare visual condition called achromatopsia, which is total color blindness, so I've never seen color, and I don't know what color looks like, because I come from a grayscale world.

Have they not travelled in the land that they could have the heart to understand , and ears to hear ? It is not the eyes alone that do not see , oblivious are the hearts within their breasts .

So have they not travelled in the land , to have hearts with which to understand and ears to hear with ? So it is not the eyes that are blind , but it is the hearts in the bosoms , that are blind .

What , have they not journeyed in the land so that they have hearts to understand with or ears to hear with ? It is not the eyes that are blind , but blind are the hearts within the breasts .

Have they not marched forth in the land , so that there might become unto them hearts to understand with or ears re hear with ? Verily it is not the sights that are blinded but blinded are the hearts that are in the breasts .

Have they not travelled through the land , and have they hearts wherewith to understand and ears wherewith to hear ? Verily , it is not the eyes that grow blind , but it is the hearts which are in the breasts that grow blind .

Have they not journeyed in the land , and had minds to reason with , or ears to listen with ? It is not the eyes that go blind , but it is the hearts , within the chests , that go blind .

Have they not journeyed in the land that their hearts might understand and their ears might listen ? For indeed it is not the eyes that are blinded it is rather the hearts in the breasts that are rendered blind .

Have they not travelled in the land , and have they hearts wherewith to feel and ears wherewith 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 .

Have they not travelled through the land so that they may have hearts by which they may exercise their reason , or ears by which they may hear ? Indeed , it is not the eyes that turn blind , but it is the hearts in the breasts that turn blind !

Have they never journeyed through the land so that they have hearts to understand , or ears to hear with ? It is not the eyes , but the hearts in the chests that are blind .

So have they not traveled through the earth and have hearts by which to reason and ears by which to hear ? For indeed , it is not eyes that are blinded , but blinded are the hearts which are within the breasts .

Have they not travelled ( sufficiently ) in the land to have understanding hearts and listening ears ? It is their hearts which are blind , not their ears .

Have they not travelled in the land so that they should have hearts with which to understand , or ears with which to hear ? For surely it is not the eyes that are blind , but blind are the hearts which are in the breasts .

Have these people not travelled through the land to make their hearts understand and let their ears hear the truth is that it is not the eyes that are blind but the hearts that are in the bosoms that are blinded .

Do they not travel through the land , so that their hearts ( and minds ) may thus learn wisdom and their ears may thus learn to hear ? Truly it is not their eyes that are blind , but their hearts which are in their breasts .

The one on the top right here is actually a dazzling laser intended to just blind the person momentarily and disorient them.

Epidemiology Color blindness affects a significant number of people, although exact proportions vary among groups.

If it has any blemish, is lame or blind, or has any defect whatever, you shall not sacrifice it to Yahweh your God.

And if there be any blemish therein, as if it be lame, or blind, or have any ill blemish, thou shalt not sacrifice it unto the LORD thy God.

Prosopagnosia (inability to recognize faces) is due to damage of the fusiform face area (FFA).

Cerebral achromatopsia (the inability to discriminate between different hues) is caused by damage to the V8 area of the visual association cortex.

As instruction and reminder to every penitent creature .

A perception and an understanding , for every bondman who inclines .

for an insight and a reminder to every penitent servant .

An insight and an admonition for every bondman penitent .

An insight and a Reminder for every slave turning to Allah ( i.e. the one who believes in Allah and performs deeds of His obedience , and always begs His pardon ) .

A lesson and a reminder for every penitent worshiper .

All these are to serve as eye openers and as a lesson to every being who is prone to turn ( to the Truth ) .

A vision and a reminder for every penitent slave .

In this there is an insight and admonition for every penitent servant .

as a lesson and a reminder to every penitent worshiper .

Giving insight and a reminder for every servant who turns to Allah .

This is a reminder and it sharpens the insight of every servant of God who turns to Him in repentance .

To give sight and as a reminder to every servant who turns frequently ( to Allah ) .

as a lesson and reminder for every human being who turns to God

To be observed and commemorated by every devotee turning ( to Allah ) .

Fiber tracts of the mammalian central nervous system (as opposed to the peripheral nervous system) are incapable of regeneration, and, hence, optic nerve damage produces irreversible blindness.

The term originally referred to a condition following acute brain damage (acquired prosopagnosia), but a congenital or developmental form of the disorder also exists, which may affect up to 2.5 of the population.

But whoso has been blind in this world shall be blind in the world to come , even farther astray from the path .

Whoever is blind in this life will be blind in the Hereafter , and even more astray . ( To the truth disbelieving . )

And whosoever is blind in this world shall be blind in the world to come , and he shall be even further astray from the way .