Surgically-induced astigmatism after non-penetrating deep sclerectomy

ESCRS 2015 - Surgically-induced astigmatism after non-penetrating deep sclerectomy

Firts Author: C. López-Caballero

Co Author(s): B. Puerto, B. Blanco, C. Navarro, V. Blazquez, L. Álvarez-Rementería

 

Purpose:

To investigate the change in corneal astigmatism after non penetratring deep sclerectomy (NPDE).

 

Setting:

Clinica Rementeria, Madrid, Spain.

 

Methods:

Several authors report corneal topographic changes after trabeculectomy or phacoemulsification with NPDE however, we found just two works studying the SIRC after NPDE and the results were different between both studies.

In our work, at 3 months, we observed mild induced postoperative WTR astigmatism that was not statistically significant (probably due to bleb formation), suggesting that nonpenetrating surgery modifies cornea less than perforating surgeries.

NPDE does not induced a statistically significant shift in astigmatism in any of the postoperatively visits. That means that most of the patients will continue with their preoperatively glasses


 

Results

A total of 43 eyes were included. The mean snellen visual acuity was 0.74 preoperatively, 0.70 after 3 months and 0.69 after 6 months (p>0.05). The mean IOP decreased from 17.7 mmHg preoperatively to 13.5 after 6 months (P<0.001 in both cases). At one month after surgery the mean shif of astigmatism was 0.46 (p>0.05), after 3 months was 0.25 (p>0.05) and 0.06 at the 6 month (p>0.05), most with the rule. There was a negative correlation between the change of IOP and the astigmatism shift. The mean axis of the positive cylinder changed from 174 to 146 degrees after 3 months (P>0.05).

 

Conclusions

Several authors report corneal topographic changes after trabeculectomy or phacoemulsification with NPDE; however, we found just two works studying the SIRC after NPDE and the results were different between both studies.

In our work, at 3 months, we observed mild induced postoperative WTR astigmatism that was not statistically significant (probably due to bleb formation), suggesting that nonpenetrating surgery modifies cornea less than perforating surgeries.

NPDE does not induced a statistically significant shift in astigmatism in any of the postoperatively visits. That means that most of the patients will continue with their preoperatively glasses.

Última modificación de la web: 21 November 2017