Author: Mustafa Değer Bilgeç (Turkey)
Co-authors: Mehmet Akif Erol, Mustafa Değer Bilgeç, Nazmiye Erol, Hülya Özen
Purpose
To investigate whether the use of contact lenses during imaging with SS-OCT and SS-OCTA has any effect on the macular and optic disc parameters in young patients with high myopia.
Setting/Venue
The study was conducted at Eskisehir Osmangazi University hospital ophthalmology clinic on high myopic patients used to wearing contact lenses.
Methods
Refractive error values of minus 6 and below were considered as high myopia and between minus 6 and 12 were included in the study. All patients were between the ages of 18-35, and all had best-corrected visual acuities of 20/20. In addition to a routine eye examination, macular vascular density, macular thickness measurements and optic disk parameters were measured with SS-OCT and SS-OCTA before and after wearing contact lenses. All examination results were analyzed with paired samples t-test for statistical analysis. p < 0.05 values were accepted statistically significant.
Results
A total of 20 patients, 38 myopic eyes were included in the study. No statistically significant difference was observed in macular thickness and optic disk area measurements before and after contact lens fitting (p> 0.05). In macular vascular density analysis with SS-OCTA, after contact lens fitting, a decrease was observed in the superficial capillary plexus vessel density (SVP) in all quadrants, while the decrease in density in the upper and nasal quadrants in the right eye and the upper and temporal quadrants and central in the left eye were found to be statistically significant (p= 0.02, 0.004, 0.03, 0.04, 0.004 respectively). In the deep capillary plexus vessel density (DVP), a decrease was observed superior quadrant and central area and an increase was observed at nasal, inferior and temporal quadrants bilateral. The decrease of the central field of both eyes and increase of the right inferior quadrant were found to be statistically significant (p= 0.02, 0.01, 0.001 respectively). In optic disc retinal nerve fiber layer analysis with SS-OCT, all quadrant values were increased while temporal and inferior quadrants in the right eye and the nasal quadrant in the left eye were found to be statistically significant (p= 0.02, 0.04, 0.002 respectively).
Conlusions
Since it may cause significant changes in test results, it would be appropriate for patients to remove their contact lenses during SS-OCT and SS-OCTA measurements to obtain more reliable results.
Financial Disclosure
No financial interest
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