PMID- 32301971 OWN - NLM STAT- MEDLINE DCOM- 20200821 LR - 20200821 IS - 1552-5783 (Electronic) IS - 0146-0404 (Print) IS - 0146-0404 (Linking) VI - 61 IP - 4 DP - 2020 Apr 9 TI - Interdigitation Zone Change According to Glaucoma-Stage Advancement. PG - 20 LID - 10.1167/iovs.61.4.20 [doi] LID - 20 AB - PURPOSE: To compare the macular interdigitation zone (IZ) of normal eyes with eyes showing different normal-tension glaucoma (NTG) stages. METHODS: Forty-two normal eyes (age, 56 +/- 5.4 years), 45 pre-perimetric eyes (age, 59 +/- 6.9 years), 51 mild-to-moderate glaucoma eyes (age, 58 +/- 7.2 years; mean deviation [MD], -5.5 +/- 3.0 dB), and 50 severe glaucoma eyes (age, 59 +/- 6.9 years; MD, -15.1 +/- 5.4 dB) were enrolled. All of the subjects underwent high-resolution spectral-domain optical coherence tomography (SD-OCT) to obtain 19 horizontal and 19 vertical macular B-scans 9 mm in length. The en face image of the scan area was divided into 589 rectangular boxes (side length of 375 microm). The IZ locations were marked on the corresponding image boxes. The IZ area was then quantified according to the number of boxes showing IZs among the 589 total boxes. RESULTS: The IZ area in the severe glaucoma eyes was significantly smaller than in the mild-to-moderate glaucoma eyes (28.99 +/- 7.88 mm2 vs. 40.79 +/- 7.46 mm2; P < 0.001), was smaller in the mild-to-moderate glaucoma eyes than in the pre-perimetric glaucoma eyes (40.79 +/- 7.46 mm2 vs. 49.92 +/- 8.10 mm2; P < 0.001), and was smaller still in the pre-perimetric glaucoma eyes than in the normal eyes (49.92 +/- 8.10 mm2 vs. 56.85 +/- 7.94 mm2; P < 0.001). In the 146 NTG eyes, a statistically significant correlation was found between IZ area and MD (r = 0.64; P < 0.001). CONCLUSIONS: SD-OCT revealed a reduction in IZ area in NTG eyes, and the extent of the reduction was positively associated with glaucoma severity. These findings suggest, though tentatively, that changes in the outer retinal layer can occur in the course of glaucoma progression. FAU - Ha, Ahnul AU - Ha A AD - ,. AD - ,. FAU - Kim, Young Kook AU - Kim YK AD - ,. AD - ,. FAU - Lee, Jinho AU - Lee J AD - ,. AD - ,. FAU - Bak, Eunoo AU - Bak E AD - ,. AD - ,. FAU - Han, Young Soo AU - Han YS AD - ,. AD - ,. FAU - Kim, Yong Woo AU - Kim YW AD - ,. AD - ,. FAU - Jeoung, Jin Wook AU - Jeoung JW AD - ,. AD - ,. FAU - Park, Ki Ho AU - Park KH AD - ,. AD - ,. LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Invest Ophthalmol Vis Sci JT - Investigative ophthalmology & visual science JID - 7703701 SB - IM MH - Aged MH - Female MH - Humans MH - Intraocular Pressure/physiology MH - Low Tension Glaucoma/*diagnosis MH - Male MH - Middle Aged MH - Nerve Fibers/pathology MH - Photoreceptor Cells, Vertebrate/*pathology MH - Retinal Ganglion Cells/pathology MH - Severity of Illness Index MH - Tomography, Optical Coherence MH - Visual Field Tests MH - Visual Fields/physiology PMC - PMC7401448 COIS- Disclosure: A. Ha, None; Y.K. Kim, None; J. Lee, None; E. Bak, None; Y.S. Han, None; Y.W. Kim, None; J.W. Jeoung, None; K.H. Park, None EDAT- 2020/04/18 06:00 MHDA- 2020/08/22 06:00 PMCR- 2020/04/17 CRDT- 2020/04/18 06:00 PHST- 2020/04/18 06:00 [entrez] PHST- 2020/04/18 06:00 [pubmed] PHST- 2020/08/22 06:00 [medline] PHST- 2020/04/17 00:00 [pmc-release] AID - 2764829 [pii] AID - IOVS-19-28616 [pii] AID - 10.1167/iovs.61.4.20 [doi] PST - ppublish SO - Invest Ophthalmol Vis Sci. 2020 Apr 9;61(4):20. doi: 10.1167/iovs.61.4.20.