![]() FST is as an alternative to VF or ERG for assessment of retinal function in patients unable to do visual fields or with non-detectable ERGs. FST results showed stronger correlations with full-field ERG amplitude than with sensitivity measured with visual field tests. ![]() 5160 H, USA 94568 87 EISS EDITEC ACIENDA RIVE UBLIN ALIFORNIA MAIL INFO MEDITEC ZEISS HTTP MEDITEC ZEISS. Visual Field Instrument with USER’S GUIDE. Nevertheless, considering only the eyes with recordable ERG responses, moderate correlations were found between combined dark-adapted a-wave amplitude (r = -0.560 P < 0.01), b-wave amplitude (r = -0.643 P < 0.001), 30-Hz flicker response (r = -0.501 P < 0.01), and FST, and high correlation with FST for cone b-wave amplitude (r = -0.715 P < 0.01).įST could be successfully determined in RP patients with a wide range of vision loss. Summary of Contents for Zeiss Humphrey matrix. Dark and light-adapted ERGs were detectable in 28 and 48 eyes, respectively. In contrast, statistically significant correlations were found between FST and static 30-2 VF mean deviation (r = -0.389 P < 0.01), microperimetry mean threshold (r = -0.607 P < 0.01). 1 This article discusses the process of perimetry and the interpretation of the visual field printouts (Humphrey visual field Analyzer). Results were compared with 1 conventional SAP examination (Humphrey Visual Field HVF. It helps in diagnosing glaucoma and assessing the progression of glaucoma. No significant correlation was found between BCVA and FST. Introduction Perimetry is an important diagnostic tool to identify and measure the extent of defects in the visual field. ![]() A trained technician performed all visual field testings. Full-field ERG (ISCEV standard) was recorded, and achromatic FST was measured using a Diagnosys Espion system with the ColorDome™ LED full-field stimulator (Diagnosys LLC, Lowell, MA, USA).īCVA mean ± SD was 0.31 ± 0.03 logMAR, and FST mean ± SD was -18.45 ± 9.53 dB. Visual fields were assessed using the central 24-2 program, Swedish interactive threshold algorithm (SITA) standard strategy with the Humphrey Field Analyzer II, model 750 (Zeiss Humphrey Systems, Dublin, CA, USA) with the appropriate correction of refractive errors. Patients were submitted to comprehensive ophthalmological examination including measurement of best-corrected visual acuity (BCVA), 30-2 threshold static VF, and microperimetry. The purpose of this study is to describe the relationships between full-field stimulus threshold (FST), electroretinography (ERG), and visual field (VF) outcomes in retinitis pigmentosa (RP).ĭata from 47 patients with RP (n = 94 eyes) were evaluated. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |