Thursday, October 8, 2015

New Research Findings- Risk Factors Associated with Dry Eye Syndrome

The authors of this study wanted to investigate independent risk factors of dry eye syndrome (DES) in a Chinese population.
This was case-controlled, hospital-based age- and sex-matched population with 789 chronic dry eye patients and 1119 healthy family members – Genetically matched.  .
Dry eye syndrome patients were determined by Ocular Surface Disease questionnaire and both groups received.
1. Slit-lamp evaluation,
2. Tear film breakup time- to measure tear viscosity
3. Schirmer test – to measure tear volume. 
4. Corneal fluorescein staining for dry spots – Rose Bangal. . 
Extensive personal and medical histories were collected and 20 risk factors were found to be associated with Dry Eye Syndrome.

1. history of hypertension
2. diabetes,
3. hepatitis C,
4. obstructive sleep apnea,
5. thyroid disease,
6. connective tissue disease,
7. gout,
8. benign prostatic hyperplasia – enlarged prostate.
9.  rosacea - red cheeks and nose.
10. stress disorder
11. depression
12. posttraumatic stress disorder (PTSD),
13.hematopoietic stem cell transplantation – bone marrow transplantation for lymphoma.
14. history of receiving head and neck radiation therapy,
15. postmenopausal estrogen therapy
16. antihistamines
17. anti-depressants
18. anxiolytics,-  anti-anxiety medications.
 19. drugs for prostatic hypertrophy
20. Computers, cell phone displays  use of a video display terminal for more than 6 hours per day, and corneal contact lenses.

The use of vitamin supplements and regular consumption of food rich in omega -3 fatty acids were found to be protective against DES. 
This large population based study of a Chinese population identified multiple risk factors for DES and may provide important avenues for identifying patients, education and potential intervention, and is consistent with previous reports.

The impact of stress, depression, contact lens wear, and hormone status (Menopause) are significant, 

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