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Macular structure–function relationship at various spatial locations in glaucoma
  1. Soa Kim1,
  2. Jin Young Lee1,
  3. Seon-Ok Kim2,
  4. Michael S Kook1
  1. 1Department of Ophthalmology, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Republic of Korea
  2. 2Department of Clinical Epidemiology and Biostatistics, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Republic of Korea
  1. Correspondence to Dr Michael S Kook, Department of Ophthalmology, University of Ulsan College of Medicine, Asan Medical Center, 388-1 Pungnap-2-dong, Songpa-gu, Seoul 138-736, Republic of Korea; mskook{at}amc.seoul.kr

Abstract

Background/aims To study whether the structure–function (S-F) relationship in glaucoma differs according to macular location using spectral-domain optical coherence tomography (SD-OCT) and standard automated perimetry 10-2 and 24-2 visual fields (VFs).

Methods We enrolled 151 eyes of 151 healthy, preperimetric and perimetric glaucomatous subjects. Macular ganglion cell-inner plexiform layer thicknesses at different parafoveal locations were measured using Cirrus SD-OCT. The mean sensitivity of 10–2 and 24–2 VFs was recorded in the decibel and 1/L scales. The topographic relationships between structure and function were assessed at different parafoveal and hemimacular locations using ‘weighted’ correlation coefficients. The strength of S-F relationships between macular ganglion cell-inner plexiform layer thickness measurements and VF mean sensitivity in various parafoveal locations and in superior and inferior hemimacula was compared using Steiger's test.

Results The temporal parafoveal sector showed a significantly greater S-F relationship in each hemimacula compared with other parafoveal sectors (p<0.05). The inferior hemimacula showed a significantly greater S-F relationship than superior hemimacula (p<0.001).

Conclusions The strength of the S-F associations at the temporal parafoveal location is significantly greater than that of the central or nasal parafoveal location in each hemimacula. The strength of the S-F association is significantly greater in the inferior hemimacula than in the superior hemimacula.

  • Glaucoma
  • Field of vision
  • Macula

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