Duration 5min, Q&A 3min
Dry Eye Parameters Before and After Phacoemlsification via Scleral Tunnel or Clear Corneal Incision
To compare the dry eye parameters using the Ocular Surface Disease Index (OSDI) score, tear break-up time (TBUT) and Schirmer`s test, before and after uncomplicated phacoemulsification using scleral tunnel incision or clear corneal incision approach.
Non-diabetic patients with no pre-existing ocular surface disease who underwent phacoemulsification using either scleral tunnel or clear corneal incision.
This was a comparative cohort study. Pre-operatively, all patients answered the OSDI questionnaire, and the TBUT and Schirmer`s test measurements were taken. They were then randomised into either Group A, who underwent phacoemulsification via scleral tunnel incision, or Group B, who underwent phacoemulsification via clear corneal incision. Repeat measurements of the TBUT and Schirmer`s test were taken at 1-week, 7-weeks and 12-weeks postoperatively. OSDI scoring was repeated at 7-weeks and 12-weeks post-operatively. The results were compared within and between both groups, and were also compared against duration of surgery and phacoemulsification power used.
Results and Conclusion
A total of 43 eyes were recruited for statistical analysis. There were 21 eyes in Group A, and 23 eyes in Group B. There was no statistical difference between demographics, duration of surgery and phacoemulsification power used between both groups. At 7- and 12-weeks post-operative period, patients` subjective symptoms improved as the OSDI score was markedly lower in both groups (p < 0.00), but the location of incision did not create any difference between both groups. Basal aqueous production was not affected by the surgery or type of incision. The tear film quality decreased at 1-week post-operative in Group A (p = 0.031) and Group B (p = 0.028), but normalised by 7-weeks post-operative for both groups The duration of surgery and phacoemulsification power had no adverse effect on the objective and subjective parameters in both groups. In conclusion, phacoemulsification surgery may lead to transient dry eye in patients with no ocular or systemic risk factors, but the type of incision does not have an effect on tear film stability and aqueous quantity. Subjective symptoms markedly improved, regardless of the incision type.
[ Keyword ]
dry eye / phacoemulsification
[ Conflict of Interest ]