Abstract
Purpose :
Allergic conjunctivitis (AC) has been reported to decrease corneal biomechanical properties. (Wang et al. 2021) We also found in a multivariate analysis adjusting for age, IOP, and corneal thickness that AC decreases biomechanical properties in normal eyes. (manuscript in preparation) In this study, we investigated whether soft contact lens (SCL) wear affects corneal biomechanical properties in patients with AC.
Methods :
The biomechanical properties of the cornea were analyzed in two groups: SCL-wearing group (CL group, 20 eyes in 12 cases) and SCL-unwearing group (NCL group, 12 eyes in 6 cases). The biomechanical parameters (TBI, CBI, SPA1, peak distance, and radius) were analyzed using a regression model since they were affected by age, corneal thickness, and intraocular pressure. SSI was an independent factor from corneal thickness and IOP and was analyzed in t-test.
Results :
Age, IOP, corneal thickness, and spherical refraction were 27.3 vs. 29.3 years, 16.0 vs. 16.4 mmHg, 508.5 vs. 535.9 μm, and -4.1 vs. -2.0 D in the CL and NCL groups, respectively ( p=0.43, 0.14, 0.002, 0.07 ). Eight patients used daily disposable lenses and four patients used two weeks disposable lenses. Radius, TBI, CBI, SPA1, or Peak distance were not affected by SCL wear (p=0.0.99, 0.08, 0.22, 0.08). The independent factor SSI was decreased by SCL wear in CLG (p=0.02).
Conclusions :
It may suggest that corneal biomechanical properties of AC patients may be decreased by SCL wear.
This abstract was presented at the 2023 ARVO Annual Meeting, held in New Orleans, LA, April 23-27, 2023.