Correlation Of Dynamic Vault Changes With Preoperative Biometric Factors Post Icl Implantation

To describe the dynamic vault changes (changes in response to varying light conditions) after Implantable Collamer Lens (ICL) implantation and to evaluate the effect of preoperative biometric factors on the same.

Nethradhama Super Speciality Eye Hospital, Bangalore, India.

Thirty eyes from thirty subjects who underwent ICL procedure for correction of high myopia or myopic astigmatism not amenable to correction with corneal procedures were included. The dynamic vault was objectively assessed in 2 weeks postoperative period using an OCT based tomographer (MS-39, CSO, Italy). Multiple regression analysis between dynamic vault changes and preoperative Crystalline lens rise (CLR), ICL size, CCT, ACD, crystalline lens thickness, WTW, STS, scotopic, mesopic and photopic pupil diameter, ATA, Expected Lens Equator Distance (ELED) and scleral spur to scleral spur diameter (SS-SS) were investigated.

CLR, SS-SS, WTW, ATA and pupil diameter in all light conditions showed a positive correlation with dynamic vault changes. While, STS, ACD, lens thickness, ELED and ICL diameter showed a negative correlation with dynamic vault changes. However, none of these correlations were found to be statistically significant (p>0.05).

Pre-operative anatomical parameters did not appear to influence the post operative dynamic vault changes in the limited dataset analysed. Larger samples may be needed to derive more conclusive results.

 

Financial Disclosure: Dr Sri Ganesh and Dr Sheetal Brar are consultants for Carl Zeiss Meditec.