近視の子供におけるSS-OCTベースおよびScheimpflugベースの光学式生体測定装置の一致
Ying-Yan Qin1, Zhao-Tian Zhang1, Shu-Wen Xing1
1State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou 510060, Guangdong Province, China.
International journal of ophthalmology
|January 23, 2026
まとめ
SS-OCTおよびScheimpflug技術を用いた光学式生体測定装置は、近視の子供における眼軸長および前房深度において一致を示した。しかし、角膜測定値の違いにより、フォローアップのためにデバイスを相互利用することはできない。
科学分野:
- 眼科学
- 生物医学光学
- 小児眼鏡学
背景:
- 正確な生体測定値は、子供の近視管理において非常に重要である。
- 臨床的一貫性のために、異なる光学式生体測定装置技術を比較することが不可欠である。
研究 の 目的:
- SS-OCTベース(IOL Master 700)およびScheimpflugベース(Pentacam AXL)の光学式生体測定装置の一致を評価すること。
- 近視の子供における眼軸長、前房パラメータ、および全角膜屈折力の測定値を評価すること。
主な方法:
- 175人の近視の子供が登録された。
- 眼軸長、角膜測定値、前房深度、角膜径、および厚さが測定された。
- 級内相関係数、Bland-Altmanプロット、および乱視ベクトル解析が使用された。
主要な成果:
- 眼軸長、前房深度、および中心角膜厚において満足のいく一致が見られた。
- 角膜径、後部角膜測定値、および全角膜屈折力において臨床的に有意な差が観察された。
- デバイス間の角膜測定値および乱視測定値の不一致が指摘された。
結論:
- SS-OCTベースおよびScheimpflugベースの生体測定装置は、主要な角膜パラメータにおいて有意な違いを示した。
- これらのデバイスは、近視の子供のモニタリングには相互利用できない。
- 長期フォローアップには、単一のデバイスタイプの一貫した使用が推奨される。
関連する概念動画
Base Excision Repair
26.1K
One of the common DNA damages is the chemical alteration of single bases by alkylation, oxidation, or deamination. The altered bases cause mispairing and strand breakage during replication. This type of damage causes minimal change to the DNA double helix structure and can be repaired by the base excision repair (BER) pathways. BER corrects damaged DNA sequences by removing the damaged base and restoring the original base sequence using the complementary strand as a template.
The first step of...
The first step of...
26.1K
DNA Base Pairing
33.0K
Erwin Chargaff’s rules on DNA equivalence paved the way for the discovery of base pairing in DNA. Chargaff’s rules state that in a double-stranded DNA molecule,
33.0K
Lewis Acids and Bases
48.2K
In 1923, G. N. Lewis proposed a generalized definition of acid-base behavior in which acids and bases are identified by their ability to accept or to donate a pair of electrons and form a coordinate covalent bond.
A coordinate covalent bond (or dative bond) occurs when one of the atoms in the bond provides both bonding electrons. For example, a coordinate covalent bond occurs when a water molecule combines with a hydrogen ion to form a hydronium ion. A coordinate covalent bond also results when...
A coordinate covalent bond (or dative bond) occurs when one of the atoms in the bond provides both bonding electrons. For example, a coordinate covalent bond occurs when a water molecule combines with a hydrogen ion to form a hydronium ion. A coordinate covalent bond also results when...
48.2K
Weak Base Solutions
24.9K
Some compounds produce hydroxide ions when dissolved by chemically reacting with water molecules. In all cases, these compounds react only partially and so are classified as weak bases. These types of compounds are also abundant in nature and important commodities in various technologies. For example, global production of the weak base ammonia is typically well over 100 metric tons annually, being widely used as an agricultural fertilizer, a raw material for chemical synthesis of other...
24.9K
Ions as Acids and Bases
26.2K
Salts with Acidic Ions
Salts are ionic compounds composed of cations and anions, either of which may be capable of undergoing an acid or base ionization reaction with water. Aqueous salt solutions, therefore, may be acidic, basic, or neutral, depending on the relative acid-base strengths of the salt’s constituent ions. For example, dissolving the ammonium chloride in water results in its dissociation, as described by the equation:
Salts are ionic compounds composed of cations and anions, either of which may be capable of undergoing an acid or base ionization reaction with water. Aqueous salt solutions, therefore, may be acidic, basic, or neutral, depending on the relative acid-base strengths of the salt’s constituent ions. For example, dissolving the ammonium chloride in water results in its dissociation, as described by the equation:
26.2K
Acid–Base Equilibria: Activity-Based Definition of pH
1.2K
For an ideal solution, the pH is defined as the negative logarithm of the hydrogen ion concentration. For a non-ideal solution, an accurate measurement of the pH must consider the negative logarithm of the hydrogen ion activity rather than concentration. In such a solution, the pH can be more accurately defined as the negative logarithm of a product of the hydrogen ion concentration and its activity coefficient.
In solutions of very low ionic strength—for example, pure water—the...
In solutions of very low ionic strength—for example, pure water—the...
1.2K


