PMID- 23691278 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20130522 LR - 20220330 IS - 2090-004X (Print) IS - 2090-0058 (Electronic) IS - 2090-004X (Linking) VI - 2013 DP - 2013 TI - Photoreceptor impairment and restoration on optical coherence tomographic image. PG - 518170 LID - 10.1155/2013/518170 [doi] LID - 518170 AB - With recent development of spectral-domain optical coherence tomography (SD-OCT), the pathological changes of retina can be observed in much greater detail. SD-OCT clearly delineates three highly reflective lines in the outer retina, which are external limiting membrane (ELM), photoreceptor inner and outer segment (IS/OS) junction, and cone outer segment tips (COST) in order from inside. These lines can serve as hallmarks for the evaluation of photoreceptor condition. In retinitis pigmentosa (RP) leading to photoreceptor degeneration, the ELM, IS/OS, and COST lines are shortened with the progression of the disease. In addition, shortening of the ELM, IS/OS and COST lines is significantly associated with each other. The line length is longest in the ELM, followed by the IS/OS, and COST, suggesting that retinal layer becomes disorganized first at the COST, followed by the IS/OS and finally the ELM. This finding is consistent with the previous report that the earliest histopathological change in RP is a shortening of the photoreceptor outer segments. On the other hand, retinal layer becomes restored first at the ELM, followed by the IS/OS and finally the COST after macular hole surgery. There may be a directionality of photoreceptor impairment or restoration on optical coherence tomographic image. FAU - Mitamura, Yoshinori AU - Mitamura Y AD - Department of Ophthalmology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima 770-8503, Japan. FAU - Mitamura-Aizawa, Sayaka AU - Mitamura-Aizawa S FAU - Katome, Takashi AU - Katome T FAU - Naito, Takeshi AU - Naito T FAU - Hagiwara, Akira AU - Hagiwara A FAU - Kumagai, Ken AU - Kumagai K FAU - Yamamoto, Shuichi AU - Yamamoto S LA - eng PT - Journal Article DEP - 20130403 PL - United States TA - J Ophthalmol JT - Journal of ophthalmology JID - 101524199 PMC - PMC3649344 EDAT- 2013/05/22 06:00 MHDA- 2013/05/22 06:01 PMCR- 2013/04/03 CRDT- 2013/05/22 06:00 PHST- 2013/01/08 00:00 [received] PHST- 2013/03/17 00:00 [accepted] PHST- 2013/05/22 06:00 [entrez] PHST- 2013/05/22 06:00 [pubmed] PHST- 2013/05/22 06:01 [medline] PHST- 2013/04/03 00:00 [pmc-release] AID - 10.1155/2013/518170 [doi] PST - ppublish SO - J Ophthalmol. 2013;2013:518170. doi: 10.1155/2013/518170. Epub 2013 Apr 3.