Indian Journal of Clinical and Experimental Ophthalmology

Comparing effect of clear corneal incision and sclera tunnel incision in phacoemulsification on central corneal thickness

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Author Details: Vimlesh Sharma

Volume : 2

Issue : 1

Online ISSN : 2395-1451

Print ISSN : 2395-1443

Article First Page : 28

Article End Page : 31


Aim: To compare the effect of clear corneal incision and sclera tunnel incision on central corneal thickness in eyes undergoing phacoemulsification.
Setting: Department of ophthalmology, Government Medical College Haldwani, Nainital, Uttarakhand.
Materials and Methods: This prospective study included 68 eyes with senile cataract from grade 1 to 3 which underwent phacoemulsification during May 2015 to October 2015 through clear corneal incision or through sclera tunnel incision. Patients were randomly assigned in group 1 with clear corneal incision and group 2 with sclera tunnel incision.  All the surgeries were performed by single surgeon using same technique. Postoperatively central corneal thickness were measured with optical non-contact biometry in both the groups on 2nd post-op day, at 1-2 weeks, 6-8 weeks and at 3 months and compared.
Results: Mean increase in CCT on 2nd postoperative day was 82µm and 62 µm in Group I and Group II respectively. At 2 weeks it was 51 µm and 23 µm, at 6 weeks it was 30 u µm and 5 µm, at 3 months 4 µm and 5 µm more than the baseline values.
Conclusion: This study revealed that increased CCT as caused by corneal oedema occurring in immediate postoperative period was more in Group I as compared to Group II. The values returned to normal range in 3 months and 2 months in Group I and Group II respectively.

Key words:
Clear corneal incision, Central corneal thickness, Scleral tunnel incision