Conjunctival xerosis (conjunctival dryness) is a phenomenon of conjunctival dryness that occurs mainly as a result of lesions in the conjunctival tissue itself, and has a variety of causes. Under normal conditions, the tear fluid secreted by the lacrimal gland and conjunctival cup cells keeps the conjunctiva constantly moist, but once the above moisturizing function is disrupted, conjunctival xerosis occurs. Conjunctival dryness can be divided into epithelial conjunctival dryness and substantial conjunctival dryness. Cod liver oil eye drops, antibiotic solution and eye ointment are applied to prevent and treat secondary infections, corneal ulcers and corneal softening. Conjunctival dryness patients close to the sides of the cornea and the outer side of the conjunctiva due to dryness and wrinkles, keratinized epithelium accumulation, the formation of varying sizes and shapes of foam-like white spots. Should go to the ophthalmology department of the regular hospital for timely examination, to determine the specific treatment measures under the personal diagnosis of experienced physicians, as well as routine blood tests, intraocular pressure tests corneal examination, conjunctival examination, etc., and to carry out targeted treatment. 1.Blood routine Blood routine is the most general and basic blood test. Blood consists of two major parts, liquid and tangible cells, and routine blood test is the cellular part of blood. Blood has three kinds of cells with different functions – red blood cells (commonly known as erythrocytes), white blood cells (commonly known as leukocytes) and platelets. Diseases are determined by observing changes in numbers and morphological distribution. It is one of the common auxiliary examination means for doctors to diagnose the condition. 2.Ocular Pressure Test Corneal Examination The test method of intraocular pressure refers to the test of intraocular pressure through medical equipment and medical methods, which can effectively prevent eye diseases that may occur in patients with diabetes and hypertension by controlling the patient’s condition such as glaucoma through the test of intraocular pressure. 3.Conjunctival examination The conjunctiva is the surface layer of the white part of the eye, when the membrane covering the inside of the eyelid and the white part of the eye is inflamed, it is called conjunctivitis. Conjunctivitis is mainly transmitted by contact, through the hands, handkerchiefs, toys, water and various utensils as a medium, the infectious force is very strong, often one person infected with the whole family, the way of manifestation also varies from person to person, the younger the age, the more serious the symptoms, and easy to be combined with lymphatic glands, fever and other systemic symptoms.