Do your postop cataract patients have dry eye?

A new study suggests that omega-3 supplementation can help.

Tell me about the study.

The study, published in the British Journal of Ophthalmology, examined 66 patients complaining of new onset nonspecific dry eye 1 month after uncomplicated cataract surgery. Baseline ocular surface testing (Schirmer test, tear breakup time, corneal staining score, and MMP-9), along with dry eye questionnaires (OSDI and DEQ), were obtained at baseline and at the 8-week follow-up visit.

Patients were randomly divided into two treatment groups:
1. Control group. These patients received artificial tears four times daily.
2. Omega-3 supplementation group. These patients received Dry Eye Omega Benefits (PRN) soft gels twice daily for 2 months and artificial tears four times daily.

What did they find?

At the 8-week follow-up visit, corneal staining, OSDI, and DEQ improved significantly in the omega-3 supplementation group. Additionally, MMP-9 levels decreased in this group.

How does omega-3 supplementation help with dry eye? There are two proposed mechanisms of action:
1. Breakdown of omega-3 fatty acids results in antiinflammatory molecules that suppress the inflammatory pathways found in dry eye disease.
2. Changes in the fatty acid composition of meibomian glands results in a secretion that contains increased levels of unsaturated fatty acids, which are in a liquid state at body temperature. This prevents blockage of gland ducts and meibum stagnation. The increased quality of meibum reduces tear film evaporation and symptoms of dry eye disease.

The take home:

According to the study authors the results demonstrate that omega-3 supplement for 8 weeks significantly improved the signs and symptoms of nonspecific typical dry eye after uncomplicated cataract surgery. (via)

FTC CL Rule Changes Effective 10/16

Remember the new Federal Trade Commission Contact Lens Rule I told you about back in June? Well, effective this Friday, October 16, the Rule’s updated regulatory requirements mandate that all 50,000 contact lens prescribers in the United States maintain a paper trail to document patient receipt of their contact lens prescription for at least 3 years.

To help optometrists adopt these requirements, the AOA has developed implementation information and guidance in the form of a Contact Lens Rule Compliance Toolkit that provides information about new documentation requirements, robocalls and new retailer requirements, how to communicate contact lens retailer violations or concerns, and more. (via)


When is the best time to treat myopia?

The earlier the better.

A new study published in JAMA Ophthalmology sought to estimate the risk of developing high myopia in adulthood associated with a specific age at myopia onset.

Tell me about the study.

The authors analyzed eye exam data from the Guangzhou Twin Study from 2006 to 2018. Cycloplegic refraction and axial length were measured at every annual visit. The age of myopia onset was recorded and high myopia in adulthood was defined as a spherical equivalent of at least −6.00 D by 17 years of age or older.

What did they find?

More than half of the Chinese study participants with myopia onset at 7 or 8 years of age developed high myopia in adulthood. The risk substantially decreases with a delay in each year of myopia onset, from greater than 50% for 7 to 8 years of age to approximately 30% for 9 years of age and 20% risk when age of onset is 10 years and older.



The percentage of adults who believe an eye exam is important, according to a new survey. The kicker? Only 46% actually get an eye exam. (via)


The percentage of KN95 masks which are certified in China that do not meet US standards for effectiveness, according to the nonprofit patient safety organization ECRI. (via) (via)

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