Micro Incision Vitreoretinal Surgery ( MIVS ) – A New Standard For All Vitreoretinal Surgical Procedures.

1. Dr. Tushar Kanti Sinha
2. Dr. Subhendu Boral
3. Dr. Arnab Das
4. Dr. Debdulal Chakraborty

1.Disha Eye Hospitals and Research Centre. Barrackpore. Kolkata. WB. India.PIN 700120

Purpose: To assess the outcomes of MIVS as routine vitreoretinal surgical procedure.

Methods: 5628 cases had been operated by MIVS ( from July 2007 to June 2010) and divided into three groups- Group I(25G), Group II ( 23G) and Group III ( 25G+). All standard vitreoretinal procedures had been divided into five categories- Category A –Macular surgeries for vitreomacular interface disorders, Category B- Vitrectomy for vitreous hemorrhage ,Category C- Retinal detachment surgeries, Category D-Combined phacoemulsification and vitrectomy surgeries, Category E– Miscellaneous surgeries including RIOFB removal , dropped lens matters or IOL removal and endophthalmitis. Complications were noted in all groups. Minimum follow up was for six months.

Results: In Group I(n=512), among all surgeries, 52% were Category A,34% were Category B, 8% were Category C, 4% were Category D and 2% were Category E. In Group II (n=3890), 31% were Category A ,33% were Category B, 24% were Category C, 7% were Category D and 5% were Category E.In Group III(n=1226),they were 21%,44%, 14% , 12% and 9% respectively .Hypotony were noted in18% in Group I, 5% in Group II and 2% in Group III. Recurrent vitreous hemorrhage were noted in 16%, 8% and 5% in three groups respectively. Postoperative endophthalmitis developed in 1 case in Group I, 2 cases in Group II and none in Group III.

Conclusion: MIVS, as a standard vitreoretinal procedure, is relatively safe in all gauzes, although peroperative surgeons comfort were maximal in Group II ( 23Gz).