Westin E, Wick B, Harrist R B
University of Houston, College of Optometry, Texas 77204-6052, USA.
Optometry. 2000 Dec;71(12):757-63.
Contact lenses are frequently fitted so that one eye is focused for distance and the other for near (monovision) in order to reduce the dependence of presbyopic patients on bifocal spectacle correction.
We surveyed Diplomates in the Cornea and Contact Lens section of the American Academy of Optometry (N = 179) regarding their estimates of success with monovision fitting and factors influencing their perception of success. Results were statistically analyzed to determine the fitting philosophies of responders estimating that they achieve high success rates (HSRs) and low success rates (LSRs), respectively.
Completed surveys were returned by 98 Diplomates (54.8%), who estimated an overall success rate of approximately 71.7% with monovision; 50.5% "totally successful" (wear monovision correction full-time without problems or need for additional correction) and 21.2% "successful" (wear monovision full-time, but experience some symptoms of blur or other discomfort, may wear over-correction at times for driving or detailed near work). Sighting dominance was the most frequently used method to determine the distant eye, followed by the plus-lens test. The HSR group tended to be more likely to take occupational factors into account when deciding which eye to use for the distance lens, and they used more flexibility in determining the near-add power. The LSR group discontinued monovision sooner than the HSR group, who continued treatment for longer than 4 weeks during the adaptation period much more often for all add ranges.
Practitioners who regard monovision treatment as very successful have somewhat different fitting philosophies than those who regard monovision as unsuccessful. Implementation of highly successful practitioners' fitting techniques may increase success with monovision contact lens fitting.
为减少老花眼患者对双焦点眼镜矫正的依赖，隐形眼镜常被验配成一只眼睛用于看远，另一只用于看近（单眼视力矫正）。
我们对美国验光学会角膜与隐形眼镜分会的会员（N = 179）进行了调查，询问他们对单眼视力矫正成功率的估计以及影响其成功率认知的因素。对结果进行统计分析，以确定分别估计自己获得高成功率（HSR）和低成功率（LSR）的应答者的验配理念。
98名会员（54.8%）返回了完整问卷。他们估计单眼视力矫正的总体成功率约为71.7%；50.5%“完全成功”（全天佩戴单眼视力矫正镜片，无问题或无需额外矫正），21.2%“成功”（全天佩戴单眼视力矫正镜片，但有一些视物模糊或其他不适症状，有时开车或进行精细近距工作时可能需过度矫正）。优势眼注视是确定看远眼睛最常用的方法，其次是正透镜试验。高成功率组在决定用哪只眼睛佩戴远用镜片时更倾向于考虑职业因素，且在确定近附加光度时更具灵活性。低成功率组比高成功率组更早停止单眼视力矫正，在适应期内，对于所有附加光度范围，高成功率组继续治疗超过4周的情况更为常见。
认为单眼视力矫正治疗非常成功的从业者与认为其不成功的从业者在验配理念上有所不同。采用非常成功的从业者的验配技术可能会提高单眼视力矫正隐形眼镜验配的成功率。
