The effectiveness of refractive correction for low vision patients in Taiwan

Joint Event on 3^rd International conference on Neuroscience, Neuroradiology and Imaging & World Congress on Clinical, Pediatric and Neuro Ophthalmology

October 03-04, 2018 Osaka, Japan

Cheng Ching-Ying, Tsai, Lung-Hui, Hsieh Hsi-Pao, Chen Po-Sen, Jou Chia-Lin and Tseng Kai-Yuan

Chung Shun Medical University, Taiwan
Mennonite Christian Hospital, Taiwan
National Taiwan Normal University, Taiwan
National Dong Hha University, Taiwan

Posters & Accepted Abstracts: J Pediatr Neurol Med

Abstract :

Purpose: To investigate refractive correction (including refractive lenses and filter lenses) efficiency for patients with low vision.

Method: There were totally 220 patients from 7 to 99 years of age (51.31±19.54) who were referred from Taiwan Resource Portal of Assistive Technology, the Ministry of Health and Welfare during 2016 to 2017, patients who could not identify hand moving at 40 cm were excluded in the study. There were 119 males (54.1%) and 101 females (45.9%); 42 (19.1%) patients were identified as mild visual impaired, 76 (34.5%) were moderate and 102 (46.4%) were severe.

Result: Eye disease and examination data were listed. 90% patients showed more or less refractive errors (sphericalâ?¤-0.75D, â?¥+0.75D or astigmatism over 0.50D) and about half of patientsâ?? visual acuity could be promoted by refractive correction, the best corrective VA (LogMAR value) were significant effective when comparing with un-correction (LogMAR VA mean difference=0.17±0.3, t=7.285, p=0.000); in addition, eye frame prescription was also positive correlated with light sensitivity or photophobia (Pearson X²=4.028, p=0.045), nystagmus (Pearson X²=8.477, p=0.004) and visual field (Pearson X²=10.192, p=0.001). Moreover, filter lenses were also correlated with presbyopia patients (Pearson X²=4.408, p=0.044), light sensitivity or photophobia (Pearson X²=18.630, p=0.000) and contrast sensitivity (Pearson X²=27.293, p=0.000).

Conclusion: Refractive correction is the first step when proceeding low vision examination, patientsâ?? VA increased about 1.48 times and might decrease near ADD from 16.7D (uncorrection LogMAR VA 1.2) to 10.0D (after correction LogMAR VA 1.0). In the meanwhile, light sensitivity or photophobia, nystagmus, contrast sensitivity and even visual field were improved. To yield twice the result with half the effort, refractive correction plays the main role before prescribing low vision aids.

Biography :

E-mail: ldiioul.tw@gmail.com