[A method and a device for the differential diagnosis of retinal pathological states].
A new method and a device--a stimulator ophthalmological KNSO 1-88 "Phosphene" is suggested for differential diagnosis of pathologic conditions of the retina. It is shown that by means of the proposed method, after 20-25 minutes of dark adaptation the threshold of electric sensitivity by phosphene increases differently with respect to the initial level (on the first minute of dark adaptation): in norm--by 15.2%, in optic nerve atrophy--by 14%, in pigmentary and nonpigmentary forms of retinal dystrophy--by 33.2%. Thus, investigation of the threshold of electric sensitivity by phosphene presents valuable supplementary data for differential diagnosis between optic nerve atrophy and nonpigmentary form of retinal degeneration: in optic nerve atrophy the degree of the threshold increase of absolute electric sensitivity differs, as a rule, but a little from normal values, while in pigmentary and nonpigmentary forms of retinal degeneration it is 2-3 time above norm.
Ponomarchuk
V S
VS
Ivanov
V A
VA
Fiadoer
S
S
D000328:Adult; D003623:Dark Adaptation / Q000502:physiology; D003937:Diagnosis, Differential; D004594:Electrophysiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009885:Ophthalmology / Q000295:instrumentation* / Q000379:methods; D010719:Phosphenes / Q000502:physiology; D012160:Retina / Q000503:physiopathology*; D012164:Retinal Diseases / Q000175:diagnosis* / Q000503:physiopathology; D012684:Sensory Thresholds / Q000502:physiology; D013997:Time Factors
Metod i ustroĭstvo dlia differentsial'noĭ diagnostiki patologicheskikh sostoianiĭ setchatki.