• Therapeutic Cataract & Refractive
  • Lens Technology
  • Glasses
  • Ptosis
  • Comprehensive Eye Exams
  • AMD
  • COVID-19
  • DME
  • Ocular Surface Disease
  • Optic Relief
  • Geographic Atrophy
  • Cornea
  • Conjunctivitis
  • LASIK
  • Myopia
  • Presbyopia
  • Allergy
  • Nutrition
  • Pediatrics
  • Retina
  • Cataract
  • Contact Lenses
  • Lid and Lash
  • Dry Eye
  • Glaucoma
  • Refractive Surgery
  • Comanagement
  • Blepharitis
  • OCT
  • Patient Care
  • Diabetic Eye Disease
  • Technology

New tear film technologies join the fight against dry eye

Article

Clinically friendly technology for the evaluation of the tear film will play an increasing role in helping optometrists diagnose and treat dry eye disease.

"In the realm of tear film evaluation, there has been very little that has come our way that has been clinically friendly," said Dr. Bitton, associate professor and externship director, University of Montreal School of Optometry, Montreal, Canada.

"There have been numerous technological advances available for research, but they often require substantial technical expertise, dedicated space, and are costly, rendering them impractical for use in most clinical practices," she noted.

Traditional methods

According to Dr. Bitton, most optometrists are very comfortable with these traditional tests, although most are subjective in nature and provide limited information on their own. Of all the tear film technologies becoming available, she believes it's most likely that clinicians will embrace the os-mometer, which is compact and clinically friendly.

The most recent osmometer (TearLab Os-molarity System, TearLab Corp.) uses a microchip to measure the concentration, or osmolarity, of a small tear sample, Dr. Bit-ton said. A comparative chart allows the clinician to assess the severity of the dry-ness from the osmolarity value obtained.

"This is a completely objective test that can not only help the clinician assess dry-ness at the onset, but can also follow the progress of the treatment of the dry eye patient," she said. "It eliminates subjectivity. The device provides a number so optometrists and patients can follow the progress of that number, just like a cholesterol or blood pressure number.

"The test is quick, reliable, and doesn't take a lot of chair time," Dr. Bitton added. "Most of the other technologies require technical support and expertise, take longer to obtain a result from a tear sample, and require much larger samples, which can be difficult to obtain in patients with dry eye."

Related Videos
Raman Bhakhri, OD, FAAO, overviews his talk on medications' potential side effects on the retina with Optometry Times
Jacobi Cleaver, OD, FAAO
Jade Coats, OD, overviews a lecture on ocular pain and patient care
Jade Coats, OD, outlines two poster presentations she gave on a novel lipid-containing eye drop at the AOA Optometry's Meeting
Adam Alexander, OD, chats with Optometry Times about his AOA e-poster presentation on Miebo
Lorraine Provencher, MD, presenting slides
Megan Cavet, PhD
Nazlee Zebardast, MD, MSc, overviews her ARVO 2024 presentations on glaucoma and polygenic risk scores
© 2024 MJH Life Sciences

All rights reserved.