Ais an acute disease caused by an infectious infiltration into the cornea; painful red eye, excessive tearing, sensitivity to light, and blurred vision; diagnosis made by a slit lamp microscope

Keratitis is an acute inflammation of the cornea causing pain,redness,blurred vision and decreased sensitivity.

Explanation:

Keratitis is the inflammation of the cornea caused by any ocular trauma, ocular surface disease, bacterial, viral or fungal infections, wearing contact lens for too long and any foreign body.

Keratitis symptoms and signs include eye pain,blurred vision,photophobia,tearing, and eye redness.

There are dofferent types of keratitis depending upon the sote of inflammation. Interstitial keratitis, epithelial keratitis and peripheral keratitis. It may be acute or chronic.

If not treated it may lead to corneal ulcer which is a leading cause of blindness.

48

Explanation:

Atomic number is equal to how much electrons there is (the number of protons is equal to the number of electrons)

To find the number of neutrons, one have to subtract the atomic number from the atomic mass.

i.e: 84-36=48