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ドライアイ疾患と角膜神経の変化における客観的な視質の評価
Evaluation of objective visual quality in dry eye disease and corneal nerve changes.
PMID: 32617802 DOI: 10.1007/s10792-020-01483-5.
抄録
目的:
ドライアイ疾患(DED)における客観的な視覚の質、および角膜神経と客観的な視覚の質の相関を探る。
PURPOSE: To explore objective visual quality in dry eye diseases (DED) and the correlation between corneal nerves and objective visual quality.
方法:
DED患者49人の98眼を対象とした。各患者は、眼表面疾患指標(OSDI)、眼瞼縁徴候とメイボミア腺の評価、角膜染色、涙膜破壊時間(TBUT)、涙のメニスカス高さ(TMH)、生体内共焦点顕微鏡(IVCM)、対物散乱指数(OSI)、平均対物散乱指数(mOSI)、変調伝達関数(MTF)カットオフ値、Strehl比などの対物視力を用いて評価されました。
METHODS: Ninety-eight eyes of 49 patients with DED were included. Each patient was evaluated with the ocular surface disease index (OSDI), eyelid margin signs and meibomian gland assessments; corneal staining; tear film breakup time (TBUT); tear meniscus height (TMH); in vivo confocal microscopic (IVCM); objective visual quality including the objective scatter index (OSI), mean objective scattering index (mOSI), modulation transfer function (MTF) cutoff value and Strehl ratio.
結果:
OSDIとmOSI(r=0.422、p=0.005)、MTFカットオフ値(r=0.355、p=0.020)、Strehl比(r=0.446、p=0.003)との間には有意な相関が認められた。OSIはTBUTfと有意な相関があった(r=-0.213、p=0.042)。mOSI、MTFカットオフ値、Strehl比は、眼瞼縁徴候およびメイボミア評価と相関していた。さらに、角膜神経長とmOSI(r=0.239、p=0.037)、OSI(r=0.294、p=0.028)、MTFカットオフ値(r=0.282、p=0.012)、Strehl比(r=0.299、p=0.008)との間には統計的に有意な相関が認められた。
RESULTS: A significant correlation was found between the OSDI and mOSI (r = 0.422, p = 0.005), MTF cutoff value (r = - 0.355, p = 0.020), and Strehl ratio (r = - 0.446, p = 0.003). The OSI was significantly correlated with TBUTf (r = - 0.213, p = 0.042). The mOSI, MTF cutoff value, Strehl ratio were correlated with eyelid margin signs and meibomian assessments. Additionally, there was a statistically significant correlation between corneal nerve length and the mOSI (r = - 0.239, p = 0.037), OSI (r = - 0.294, p = 0.028), MTF cutoff value(r = 0.282, p = 0.012), and Strehl ratio (r = 0.299, p = 0.008).
結論:
本研究では、DED患者の客観的な視覚的質が臨床症状や徴候と相関していることを明らかにした。さらに、角膜神経と客観的な視質の関係を初めて調べたところ、角膜神経が長く広いほど客観的な視質の改善と関連していることを発見し、神経の変化がDED患者の視質低下に関連する要因である可能性を示唆しました。
CONCLUSIONS: Our study explored that objective visual quality was correlated with clinical symptoms and signs in DED patients. Furthermore, for the first time, our study explored the relationship between corneal nerves and objective visual quality and discovered that longer and wider corneal nerves were associated with better objective visual quality, which suggested that nerve changes may be a factor that related to poor visual quality in DED patients.