%A Azad, Rajvardhan %A Ghatak, Urmimala %A Sharma, Yog %A Chandra, Parijat %T Multifocal electroretinogram in normal emmetropic subjects: Correlation with optical coherence tomography %9 Original Article %D 2012 %J Indian Journal of Ophthalmology %R 10.4103/0301-4738.91345 %P 49-52 %V 60 %N 1 %U https://journals.lww.com/ijo/pages/default.aspx/article.asp?issn=0301-4738;year=2012;volume=60;issue=1;spage=49;epage=52;aulast=Azad %8 January 1, 2012 %X Aim of the Study: To establish the normative database for multifocal electroretinogram (mfERG) parameters in a normal emmetropic population. To correlate the data so obtained with the central macular thickness obtained using the optical coherence tomography (OCT) scan. Materials and Methods: mfERG data were obtained from 222 eyes of 111 emmetropic subjects. The amplitude (nv/deg 2 ) and implicit times (ms) of the first-order kernel mfERG responses (N1, P1, and N2 waves) were obtained and grouped into five rings (Ring 1: Central 2°, Ring 2: 2-5°, Ring 3: 5-10°, Ring 4: 10-15°, Ring 5: >15°). The central macular thickness (CMT) was obtained using the macular thickness scan protocol of the OCT. Results: The mfERG data obtained were used to create a normative database. The amplitudes of the mfERG waves were maximum in the fovea and progressively decreased with increasing eccentricity (P = 0.0001). The latencies of the P1 and N2 waves were longest in the central ring and progressively shortened with eccentricity (P = 0.0001). No statistically significant correlations were observed between central ring 1 parameters and the CMT. Conclusion: This study establishes normative database for mfERG parameters in an emmetropic population. No statistically significant correlation was noted between CMT and mfERG parameters. %0 Journal Article %I Wolters Kluwer Medknow Publications %@ 0301-4738