Pneumatic Retinopexy: An Experience of 12 Years at a Tertiary Care Hospital.

Purpose The purpose of this study is to retrospectively analyze single-operation success (SOS) rates of pneumatic retinopexy (PR) for the treatment of rhegmatogenous retinal detachment (RRD) and to identify the predictors of treatment outcomes. Methods Sixty-one eyes of 61 patients who underwent PR for RRD during a period of 12 years were included in this study. Patient demographics along with pre-treatment clinical characteristics were recorded. Treatment outcomes in terms of best-corrected visual acuity (BCVA) and anatomical characteristics were reported including any post-operative complications. Visual outcomes were compared according to pre-treatment characteristics and between groups of the eyes achieving SOS and those requiring additional surgery. Results SOS was achieved in 37 (61%) eyes. Twenty-four (39%) eyes required one (36%) or two (3%) additional procedures. There was no significant association between pre-treatment characteristics and treatment failure. SOS eyes had significantly better visual outcomes (P=0.002), and so did those with macula-on status (P=0.003). New/missed breaks (9.8%) and proliferative vitreoretinopathy (PVR) (4.9%) were the most common causes of failure. Conclusions We found PR to be a beneficial technique for the treatment of RRD in this cohort. PR remains the least invasive treatment modality, and as a cost-effective technique, it is especially useful in low/middle-income countries such as Pakistan.

Comparison between the values of intra-ocular pressure measured by Goldmann applanation tonometer and Air-Puff non-contact tonometer and their relationship with central corneal thickness.

Glaucoma is a sight threatening disorder in which measuring intra-ocular pressure (IOP) with accuracy plays a fundamental role. This study aimed to compare the IOP values air-puff of non-contact tonometer(APT) and Goldmann applanation tonometer (GAT) along with their relationship to central corneal thickness (CCT), in various IOP groups. Three hundred and eleven patients were enrolled using convenience sampling in this cross-sectional, prospective study. IOP was measured with Keeler 3000 APT and GAT along with CCT using TOMEY EM-4000. Data was analysed using Bland-Altman, Spearman's and intra-class correlation analysis of APT, GAT and CCT on SPSS 24.0. The median IOP by APT and GAT was 14 mmHg (range:37) and 12 mmHg (range:16) whereas the median CCT was 534µ (range: 44), respectively. At low (<10 mmHg) and normal IOP (10-20 mmHg) both the instruments showed similar results but GAT was found to be more accurate (p£0.001) at higher IOP (21-30 mmHg). However, at moderate and higher groups of IOP, APT revealed overestimation of IOP compared to GAT. CCT also plays a significant role.