J Korean Ophthalmol Soc.  2017 Apr;58(4):395-400. 10.3341/jkos.2017.58.4.395.

A Pilot Study of Changes in Tear Film Short-term Dynamics with Infrared Imaging after Phacoemulsification

• Kim S
• Park Y
• Na KS
• Kim HS

• KMID: 2376593
• DOI: http://doi.org/10.3341/jkos.2017.58.4.395

Abstract

PURPOSE
To evaluate the short-term changes in tear film dynamics with non-invasive infrared imaging measurement before and after cataract surgery as a pilot study.
METHODS
Seventeen eyes of 17 patients without preoperative dry eye were enrolled in this study. Non-invasive keratograph tear break-up time (NIK-TBUT) and non-invasive keratograph tear meniscus height (NIK-TMH) were measured before and 1 day, 1 week, and 1 month after cataract surgery using a keratograph.
RESULTS
The mean patient age was 64.47 ± 10.28 years, and 78.95% were female. Although the mean postoperative 1 day NIK-TBUT-first value was not significantly different from the preoperative value, the mean postoperative 1 week and 1 month NIK-TBUT-first values were significantly lower than preoperative values (p < 0.05). The postoperative 1 day, 1 week, and 1 month NIK-TBUT-average and the NIK-TMH values were not different from preoperative values.
CONCLUSIONS
Our study showed that cataract surgery can lead to tear film instability. And it is important to determine the long-term outcomes of surgery and whether NIK-TBUT and NIK-TMH correlate with slit lamp examination tear break-up time (SLE-TBUT) and slit lamp examination tear meniscus height (SLE-TMH).

Keyword

Cataract surgery; Dry eye; Keratograph; Tear film

MeSH Terms

Cataract
Female
Humans
Phacoemulsification*
Pilot Projects*
Slit Lamp
Tears*

Figure

• 

  Figure 1. Screenshot of output window of Keratograph 5M for the left eye of a patient. Left panel: a dynamic video recording captures the process of tear break up. Upper right panel: the total break-up areas during the time when the eye was open. Lower right panel: In the patient, non-invasive Keratography break-up time first (NIKBUT-first) is 4.7 seconds, non-invasive Keratograph break-up time-average (NIKBUT-average) is 8.6 seconds and automatic dry eye classification is level 1.

• 

  Figure 2. Measurement of tear meniscus height (TMH) using Keratograph 5M . The TMH was measured perpendicular to the lid margin at the pupil center.

Reference

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