Influence Of Dry Eye Disease And Related Parameters On The Repeatability Of Keratometry And Axial Length Using Optical Low-Coherence Reflectometry(Olcr) For Cataract Surgery

To determine whether dry eye disease and related parameters affect the repeatability of keratometry measurements, axial length by OLCR in cataract surgery patients

Retrospective study with chart review 

Eyes scheduled for cataract surgery were enrolled. Dry eye disease related parameters including tear film break-up time (tBUT), corneal staining scores, ocular surface disease index (OSDI), Schirmer test were examined. Optical biometry including keratometry and axial length was performed twice on the separate day using Lenstar LS 900 (Haag-Streit AG, Switzerland). The difference of repeated measurements was evaluated in the dry eye and non-dry eye group. At 1 month after surgery, the mean absolute error (MAE) was compared between the dry eye and non-dry eye group.

A total of 69 patients including 42 eyes in the dry eye group and 27 eyes in non-dry eye group were enrolled. There was no significant difference in the repeated measurements of axial length, corneal radius of curvature, corneal astigmatism, and corneal astigmatism axis between the dry eye and non-dry eye group (p>0.05). Additionally, tBUT, OSDI, corneal staining score and Schirmer test showed no significant correlation with the difference between repeated measurements(p>0.05). There was no difference in MAE between the dry eye and non-dry eye group.

The presence of dry eye disease and related parameters did not affect the repeatability of corneal curvature and axial length in cataract surgery patients.