Post-Operative Evaluation of Tear Film Instability After Cataract Surgery| Stephy Publishers
Modern Research in Vision and Ophthalmology- (MRVO) | Stephy Publishers
Abstract
Purpose of Study: To
evaluate tear film instability after cataract surgery by measuring tear break
up time. Place of Study: This study was carried out in Teaching Hospital,
University of Lahore, Lahore, Pakistan.
Materials and Methods: A descriptive
cross- sectional study was conducted in Teaching Hospital, UOL. Tear break up
time was measured on patients post-operatively who under -went cataract
surgery. A total of 60 patients were included in study after non –probability
convenient sampling technique. Both male and female patients were included in
study age 45-65 years. Data was collected through self-designed questionnaire
based proforma. Further results were analyzed using SPSS version 20.
Results: Tear break up time was found statistically reduced at 1 week, 2 week
and after one month postoperatively(P =.0002, P<.0001). However, the tear film stability had reverted to approximately the preoperative measurement 1 month after surgery. The mean values of postoperative results were altered from preoperative measurement values. BUT outcomes had reduced considerably at 1 week postoperatively (P=.0001) but had resumed to very nearly the preoperative value 1 month after of cataract surgery. While goblet cell density (GCD) had reduced considerably at 1 week, 2 weekand 1 month postoperatively (P><.0001).
Conclusion: This study concludes
that tear breakup time is significantly reduced after cataract surgery due to
destruction of goblet cells as shown in above tables. But tear break up time is
significantly improved after one week, two weeks and one month of follow ups
respectively.
Keywords: Tear film, Cataract
surgery, Instability, Phacoemulsification
Introduction
Modern cataract surgery is one of the most popular and successful surgical
procedure carried out today. Despite the satisfactory visual outcomes
postoperatively obtained for many patients, some are distracted and
dissatisfied due to tear film dysfunction, poor vision, or diminished
sensitivity to dissimilarity. Tear film dysfunction because of the use of
topical medications, reduced membrane sensitivity, and mucous membrane
epithelial cell loss are most generally investigated. Despite ordinary tear
production and a usual membrane surface, some patients complain of ocular
discomfort.1 Dry eye syndrome is characterized by membrane and mucous membrane
xerosis caused by tear deficiency and over evaporation.2
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