Visual outcomes of high-volume compared with low-volume manual small-incision cataract surgery in Nepal

Outcomes of Cataract Surgeries Performed in Makeshift Operating Rooms in Rural Camps, Compared to Hospital-based Surgeries in Nepal

PURPOSE

This study was undertaken to evaluate the complication rates and visual outcomes of outreach cataract surgeries done in makeshift operating rooms.

METHOD

In this retrospective study, surgical outcomes of consecutive Manual Small Incision Cataract Surgeries (MSICS) done in 11 rural camps in Nepal were compared with the results of consecutive hospital surgeries (MSICS and phacoemulsification) done by the same surgeon. Surgeries were done from September 2018 to March 2020.

RESULTS

Out of 1034 study population in each group, a significantly higher number (p < .001) of camp patients (27%, n = 279) were either blind or had severe visual impairment when compared to hospital patients (18.6%, n = 192). Around 88.9% (n = 919) of cases operated in camps and 85.7% (n = 886) in the hospital achieved uncorrected visual acuity (VA) of 6/18 or better on the first postoperative day. Poor outcome (VA<6/60) was seen in 3.7% (n = 38) of cases in camps and 3.9% (n = 40) in the hospital. The difference in visual outcomes was not significant (p = .162) when the results were controlled for other associated variables. There was no significant difference (p = .126) between complication rates in camps (1.9%, n = 20) and hospital surgeries (3.5%, n = 36) when preoperative conditions were statistically controlled. No cases of endophthalmitis were reported.

CONCLUSIONS

Makeshift operating rooms can be used for cataract surgeries in rural areas where no standard operating rooms are available. If appropriate patient selection criteria and standard surgical protocols are followed, good surgical outcomes can be achieved in camps by an experienced surgical team.

Postoperative endophthalmitis with and without intracameral moxifloxacin prophylaxis in a high volume surgery setting

Objective

This study was conducted to understand the effects of intracameral moxifloxacin in decreasing the incidence of postoperative endophthalmitis after cataract surgery in an eye hospital with a high volume surgical load.

Methods and analysis

In this single-centre, retrospective, clinical registry-based study, we compared the rates of postoperative endophthalmitis in 31 340 cataract surgery patients operated during 22 months after June 2018 who received intracameral moxifloxacin to 80 643 patients operated during 41 months before June 2018 who did not receive intracameral moxifloxacin. All patients received subconjunctival gentamycin and dexamethasone. Combined surgical procedures were excluded from the study.

Results

There was a significant reduction (p<0.001) of postoperative endophthalmitis rates in cataract surgeries from 0.144% (116/80 643) to 0.025% (8/31 340) after initiation of intracameral moxifloxacin. Endophthalmitis rates decreased from 0.120% (12/9942) to 0.009% (1/10 787) in phacoemulsification group and from 0.147% (104/70 701) to 0.034% (7/20 553) in manual small-incision cataract surgeries. Gram-positive organisms including Coagulase-negative staphylococci (37.9%, n=11) and Staphylococcus aureus (S. aureus 34.5%, n=10) were the most common organisms isolated out of 29 culture-positive cases. 24.1% (28/116) endophthalmitis cases in group without moxifloxacin were culture positive compared with 14.3% (1/7) of cases in moxifloxacin group. 72% (n=8) of the Coagulase-negative staphylococci and 80% of S. aureus isolates (n=8) showed in vitro sensitivity to moxifloxacin.

Conclusion

Prophylactic use of intracameral moxifloxacin injection in addition to subconjunctival gentamycin in cataract surgery is associated with a significant decrease in rates of postoperative endophthalmitis when compared with the use of subconjunctival gentamycin alone in high volume settings.