Abstract
Purpose :
Compare surgical and visual outcomes of patients, treated with phacoemulsification, in a reference center in Mexico City, by ophthalmology residents, with different equipment
Methods :
Retrospective,observational,randomized case series study. Clinical data obtained from the Anterior Segment Department Surgical Ophthalmology Resident Training Program at Instituto de Oftalmologia-Conde de Valenciana in Mexico City, from June 1st 2014-June 1st 2015. Surgeries were performed under supervision of the same attending physician, who decides what type of equipment to use: Infiniti Vision System with Duovisc OVD and SN60WF lens; Stellaris Vision Enhancement System with Amvisc Plus OVD and MX60–enVista lens; and Faros with Hanita OVD1.8 and Focus 602 lens. Patients had minimum 6 month follow-up
Results :
We analyzed 45 patients, in 3 groups. Total average age 71.07±8.11 years. Cataracts had average LOCS III NO of 2.3±0.63 and NC2.2±0.59; patients had best corrected visual acuity of 0.65±0.50logMAR, mean corneal keratometry 44.17±1.69D. Axial length of 23.13±0.70 mm.
Groups were formed by machine used: Group1(Stellaris), Group2(Faros), Group3(Infiniti). Average time of surgery was 66, 66.33 and 56.67 minutes respectively. Six, 7 and 3 patients experienced complications, like posterior capsule rupture: 2 patients in Group1 and 1 in Group2; Descemet membrane detachment:1,1 and 2 respectively. Zonular dialysis: 1, 2 and 1respectively. Two patients in groups1 and 2 had an IOL placed on sulcus, the rest, in the capsular bag. 24 hours postop BCVA: 0.56, 0.49 and 0.41logMAR. Corneal edema in 12,15 and 9 patients respectively; leakage by the main incision was reported in 2 patients in group1;anterior chamber reaction for the 3 groups were 2+ anterior chamber cells.
BCVA in the final visit: 0.12, 0.14 and 0.12logMAR respectively. Only 2 patients in group2 develop posterior capsule opacification.
Conclusions :
All our patients were operated by 3rd-year ophthalmology residents. We found more complications in group2, followed closely by group1. However, final BCVA was the same in group 1 and 3. The fewer complications and the better final BCVA were achieved by group 3. However, results in the other groups are similar.
We can conclude that in a certain type of cataracts, results by ophthalmology resident cataract surgery are very similar. A bigger study is necessary to have deeper conclusions.
This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016.