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Dryness and thickening of the conjunctiva, sometimes following chronic conjunctivitis, disease of the lacrimal apparatus, or vitamin A deficiency.



an affection of the eyes expressed in dryness of the conjunctiva and cornea. It arises as a result of disturbance of tear secretion and chiefly of trophic disturbances. One of the immediate causes of xerophthalmia is avitaminosis A; it may arise in children when there are severe gastrointestinal diseases. The most frequent causes of xerophthalmia are trachoma, pemphigus, and chemical burns of the eyes. It is manifested by a sensation of dryness and pain in the eyes and heaviness of the eyelids; the cornea becomes cloudy and may undergo irreversible cicatricial changes. Vision is decreased.

Xerophthalmia is treated by medication; good results are obtained by transplanting the excretory duct of the parotid gland to the conjunctival sac to restore moisture to the eye.

References in periodicals archive ?
Clinical research demonstrates that a single oral capsule daily relieves dry eye syndrome within 30 days and provides lasting relief--without risky prescription-drug eye-drops' side-effects.
Up to today, the line of work in which we have more rapidly advanced in is in ophthalmology, for the treatment of illnesses such as dry eye syndrome, glaucoma, ocular allergies and illnesses of the retina", added Dr Jimenez.
Dry eye syndrome also worsens with age because tear secretion naturally decreases as people get older.
Common symptoms of dry eye syndrome typically include dryness, foreign body sensation, secretion, burning, redness, fatigue, blurred vision, blinking, and itchiness.
The Dry Eye Syndrome (DES) EpiCast Report provides an overview of the risk factors, comorbidities, and global trends for DES in the nine major markets (9MM) (US, France, Germany, Italy, Spain, UK, Japan, China, and India).
To study the prevalence and incidence of dry eye syndrome in eastern Madhya Pradesh region.
Dry eye syndrome is a multifactorial disease and it is well known that TB4 promotes cell migration and proliferation, modulates cytokines and/or chemokines related to inflammation, matures stem cells, and stimulates cell survival, all of which are believed to be important for effective treatment of DES.
Caption: PhD student Sandy Liu is leading a team working on nanoparticles to improve the effectiveness of a medication that combats dry eye syndrome.
Medications such as antihistamines and hormone replacement therapy may increase the incidence of dry eye syndrome, because these drugs reduce the aqueous portion of tears.
Of 100 subjects, 54(54%) were males and 46(46%) were females (Table 3 and 4) But there was no significant association between sex and frequency of dry eye syndrome (P = 0.
Currently the company is developing a pipeline for dry eye syndrome in 28 Asian and Pacific Rim countries by preparing for Phase III clinical trials while developing a second product in the U.
Ocular involvement in diabetes, include diabetic retinopathy, neovascular glaucoma, cataract, changes in refractive errors, Ptosis, ophthalmic nerve paralysis and dry eye syndrome.