Small incision cataract surgery and phacoemulsification: A comparison of central foveal thickness by OCT
Keywords:
Cataract, Macular Edema, OCT, SICSAbstract
Aim
There is huge backlog of cataracts in India ,which is the most common cause
(62.6%) of reversible blindness. Since small incision cataract surgery is equally
good and safe procedure for conducting cataract extractions we conducted a
study to see the effect of phacoemulsification and small incision cataract
surgery on foveal thickness by optical coherence tomography.
Materials and methods
In a prospective study 60 patients were randomly distributed to undergo small
incision surgery or phacoemulsification (thirty in each group). They were
evaluated selectively and subjected to Preoperative OCT and Postoperative
OCT at Week 1 and 4 respectively by Spectral Domain Optical Coherence
Tomography and the values of Central Foveal Macular Thickness (CFT) were
compared.
Results
In phacoemulsification group, the average central foveal thickness (CFT)
preoperatively, at week 1, week 4 was 200.33, 207.33 and 201.67 respectively. In SICS group, the average CFT
preoperatively, at week 1 and week 4 was 203.66, 215.33 and 211.86 respectively. The mean CFT in
phacoemulsification and SICS group was compared at week 1 post operatively and week 4 and the difference
was statistically non-significant, (p=0.58 at week 1 and 0.057 at week 4).
Conclusion
There is subclinical increase in foveal macular thickness postoperatively in both phacoemulsification and small
incision cataract surgery. The difference in degree of increase between the two groups was statistically
insignificant. In our opinion small incision cataract surgery is safe and effective mean of treating cataracts,
especially in a country like India which has huge backlog of cataract patients and where majority of trainees
use SICS for cataract surgery.
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