Sharma Anuj, Phulke Sonia, Agrawal Anugya, Kapoor Isha, Bansal Rakesh Kumar
Department of Ophthalmology, Government Medical College and Hospital (GMCH-32), Sector 32, Chandigarh, 160030, India.
Clin Ophthalmol. 2021 Feb 16;15:617-622. doi: 10.2147/OPTH.S291467. eCollection 2021.
To assess the demography, magnitude, and type of corneal astigmatism in patients undergoing cataract surgery in North India.
It is a clinic-based, cross-sectional, observational study. Keratometric values and demographic data were collected for eligible patients who had undergone phacoemulsification at a tertiary eye care center between January 2010 and December 2017, using a non contact, optical low coherence reflectometry (OLCR).
A total of 3597 eyes were recruited for the study. There were 1810 (50.3%) females and 1787 (49.7%) males. The mean age was 59.121±15.19 (range 5-100 years). A total of 3559 eyes were qualified for astigmatism analysis. The mean corneal astigmatism among all patients was 1.17±1.15 D (range 0-12.5 D). There was no astigmatism in 99 eyes (2.78%), with-the-rule (WTR) in 1062 eyes (29.83%), against-the-rule (ATR) in 1843 eyes (51.72%) and oblique astigmatism (OA) in 555 eyes (15.59%). The tendency of a gradual change from with the rule (WTR) to against the rule (ATR) astigmatism was noted as the age advanced.
In the present study around 56.69% of eyes had corneal astigmatism of <1.0 D that can be managed by simple cost-effective keratorefractive procedures especially in developing countries. However, our 40.49% patients had >1.0 D of corneal astigmatism, which may benefit by toric intraocular lenses.
评估印度北部接受白内障手术患者的角膜散光的人口统计学特征、程度和类型。
这是一项基于诊所的横断面观察性研究。使用非接触式光学低相干反射ometry（OLCR），收集了2010年1月至2017年12月期间在三级眼科护理中心接受超声乳化手术的符合条件患者的角膜曲率计值和人口统计学数据。
共招募了3597只眼睛进行研究。女性1810例（50.3%），男性1787例（49.7%）。平均年龄为59.121±15.19岁（范围5 - 100岁）。共有3559只眼睛符合散光分析条件。所有患者的平均角膜散光为1.17±1.15 D（范围0 - 12.5 D）。99只眼睛（2.78%）无散光，顺规散光（WTR）1062只眼睛（29.83%），逆规散光（ATR）1843只眼睛（51.72%），斜向散光（OA）555只眼睛（15.59%）。随着年龄增长，注意到散光有从顺规（WTR）逐渐变为逆规（ATR）的趋势。
在本研究中，约56.69%的眼睛角膜散光<1.0 D，可通过简单且经济有效的角膜屈光手术进行处理，尤其是在发展中国家。然而，我们40.49%的患者角膜散光>1.0 D，这可能受益于散光人工晶状体。
