Dryness of eyes could occur if there is insufficient production by the lachrymal glands which can cause the sensation as if a foreign body is in the eye. It can lead to symptoms, itching, irritation, redness and pain. Homeopathic Medicine has good remedies to cure the condition with help of common remedies like Bryonia, Alumina, Sarsaparilla etc.
But initially you need to be examined by an Ophthalmologist to see if there are any changes in the eye.