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Cristian Dalmasso, J Aritz Javier Urcola, Elena Vecino, Javier Cabrerizo, Gonzalo Saracibar, ; Postoperative IOP is not related to intrascleral lake morphology after Non Penetrating Deep Sclerectomy without scleral implant. Invest. Ophthalmol. Vis. Sci. 2014;55(13):6131.
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© ARVO (1962-2015); The Authors (2016-present)
To investigate the relationship between intrascleral lake morphology after non penetrating deep sclerectomy with mytomicin C and without scleral implant, and postoperative IOP.
Retrospective, observational non comparative study. 88 eyes of 88 consecutive pacients who underwent d-sclerectomy with mytomicin C and without any scleral implant were analized. We measured the intrascleral lake parameters as height, width, depth, cross-sectional area and volume using Swept Source OCT (SS-100. CASIA. Tomey, Nogoya, Japan.) and compared them with postoperative IOP after 1, 2 and 3 years.
The mean age of the patients was 71.6±14.3 years and the mean postoperative IOP was 14.6±3.9 mm Hg. No intrascleral bleb was found by SS-OCT in 13 operated eyes . The mean intrascleral bleb height was 0.42±0.29 mm, the mean width was 2.73±1.76 mm, the mean depth was 2,43±1,54 mm, the mean cross-sectional area was 1.21±1.04 mm2 and the mean volume of the lake was 4,68±5,6 mm3. The correlations between all the parameters of the lake morphology and the postoperative IOP, measured at 1, 2 and 3 years, were poor. In the 1 year postoperative group the correlation coefficients of the lake height, width, depth, area and volume were r= -0.253 (p=0.044), r= -0.367 (p=0.012), r=-0.298 (p=0.044), r= -0.160 (p=0.288) and r= -0.241 (p=0.107), respectively. In the 2 years postoperative group were r= -0.351 (p=0.167) , r= 0.160 (p=0.541), r= -0.184 (p=0.481), r= -0.057 (p=0,828) and r= 0.015 (p=0.954). In the 3 years postoperative group were r=0.073 (p=0.730), r= -0.068 (p=0.746), r= (p=0.567), r= 0.138 (p=0.510) and r= 0.116 (p=0,581) for the same parameters, respectively.
The correlation between the postoperative IOP and the intrascleral lake morphology at different postoperative time points is poor. Although not using any intrascleral implant can modify the morphology of the lake, in our experience, no parameter measured by SS-OCT can be used to predict the surgical success of the NDPS.
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