DR. EESHITA JAIN

Dr. SHIVANAND BUBANALE, DR. UMESH HARAKUNI, DR. PRANITHA SATARASI, DR. DHRUV GOYAL

Abstract

AIM To compare effect of ropivacaine and bupivacaine-lidocaine combination on intraocular pressure(IOP), after peribulbar block in cataract surgery.

METHOD

A 1year comparative study assessing patients IOP after peribulbar block. Patients were allocated according to local anaesthetic used: Gp A (n=100), 0.75 % ropivacaine and Gp B (n=100) 2 % lidocaine with 0.50 % bupivacaine mixture both associated with 75 units hyaluronidase. IOP was taken at 4 time points: before block (control), 1, 5 and 15 min after block.

RESULT

Mean IOP (mm Hg) after block was significantly lower in Group A at 15 mins (A: 13.31±3.17 vs B: 16.68±4.84).

CONCLUSION

Variation of IOP was different in each group. In Gp A mean values obtained at 3 time points after block were significantly lower than in Gp B. Mean value of IOP significantly rose 1 min after block and was close to control only at 15min. This effect is probably due to relaxation of extraocular muscles and intrinsic vasoconstriction induced by ropivacaine.