Measuring the Predictive Capability of Surgical Outcome of Different Factors using Optical Coherence Tomography

Abstract

Objective: The present study intended to measure the predictive capability of surgical outcome of various factors by OCT (optical coherence tomography). Methods: This case series study was conducted in the Department of Ophthalmology, Al-Ibrahim Hospital and Al-Tibri Medical College Hospital from April to October 2013. 21 diagnosed cases of primary macular hole (PMH) of grade =2 were selected through non probability consecutive sampling. Exclusion criteria were secondary macular hole (SMH ), retinal detachment and cataract. Visual acuity was checked by Snelled s chart before proceeding to the fundoscopy. OCT macular scan was conducted preoperatively. Willing volunteers were asked to sign an informed written consent. Pars plana vitrectomy along with internal-limiting membrane (11_,M) peeling was performed. Gas tamponade was used. Patients were asked for follow ups on day 1, week 1 and finally at one month postoperatively. Data was analyzed on SPSS 21.0 version at 95% CI (p = 0.05). Results: Gender distribution showed male predominance. Male and female were noted as 12 (57.14°0) and 9 (42.85%) respectively. Mean age was noted as 55.4 ±SD 8.56 years. Right and left eye procedure were performed in 14 (66.6%) and 7 133.3%) of patients respectively. Mean Macular Hole Base Diameter (MHBD) was noted as 1358 ±745.34 p (Range 358 p - 3987 p.). Mean Macular Hole Height ( MHH), was 417.90 ±113.99 g (Range 208 - 687 g ). Mean MHMD was measured as 603 ±153.19 p. ( Range 334 - 978 p). Mean macular hole index ( MH I) was found 0.36± 0.19 ( Range 0.14 - 1.11). Mean diameter hole index (MD1-11) was noted as 0.51 ±0.21 ( Range 0.17 - 1.22 ). Mean Tractional hole index (MTH I) was noted as 0.72± 0.2144 (Range 0.37 - 1.26). Successful surgery was noted in 17 (81%) of macular hole in present study. While 4 (19%) subjects proved macular hole surgery as unsuccessful. Conclusion: It is concluded that the preoperative evaluation by OCT may be used for better outcome for macular hole surgery. Pre operative evaluation by OCT may help in positive prediction of surgical outcomes.