[Sensitivity loss of short wavelength sensitive cones in myopic eyes by blue-on-yellow perimetry].
A decrease of the short wavelength sensitive cone (S-cone) sensitivity has been reported in myopic eyes in addition to glaucoma and retinal diseases such as retinal detachment and diabetic retinopathy. In order to investigate early changes of visual function in myopic eyes, blue-on-yellow perimetry (B on Y) which could detect S-cone sensitivity and white-on-white perimetry (W on W) were measured with a computed perimeter program. Young subjects with good visual acuity, normal color vision, and normal intraocular pressure were selected. They had no other ophthalmoscopic abnormalities except for tigroid fundus. Mean deviations of W on W were reduced in mild and high myopic groups. In both tests, the sensitivities decreased as the refractive errors increased in all the tested areas (p < 0.0001). The sensitivity in B on Y decreased more remarkably than in W on W with an increase of refractive error (p < 0.05). We concluded that B on Y perimetry was significantly sensitive to identify early changes of visual function in myopic eyes.
Kawabata
H
H
Department of Ophthalmology, Chiba University School of Medicine, Japan.
Fujimoto
N
N
Adachi-Usami
E
E
D015350:Contrast Sensitivity; D005260:Female; D006801:Humans; D008297:Male; D009216:Myopia / Q000503:physiopathology*; D010775:Photic Stimulation; D010786:Photoreceptor Cells / Q000502:physiology; D011846:Radio Waves; D017949:Retinal Cone Photoreceptor Cells / Q000502:physiology*; D058609:Visual Field Tests / Q000379:methods*