Visual acuity as measured with Landolt C chart and Early Treatment of Diabetic Retinopathy Study (ETDRS) chart.

Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie
Hsi-Kung KuoChih-Hsin Chen

Abstract

We compared the Landolt C chart checked under normal clinical conditions and the Early Treatment of Diabetic Retinopathy Study (ETDRS) chart, using standard clinical research protocols for subjects with normal vision, cataract and maculopathy. This prospective, comparative study was approved by the hospital Institutional Review Board. Patients with cataract and maculopathy were included, with the normal fellow eyes analyzed as normal vision group. Differences between the two charts were analyzed using Student's t-test. Normal and cataract eyes showed no statistically significant differences between methods. In the maculopathy group, ETDRS acuity (0.714 ± 0.393) was better than Landolt C acuity (0.845 ± 0.579), but the differences were not statistically significant (p = 0.152). Furthermore, if after dividing visual acuity into subgroups, >20/200 and ≤20/200 by Landolt C acuity, the latter subgroup had significant differences between the two tests (p < 0.001). ETDRS acuity (1.014 ± 0.319) was better than Landolt C acuity (1.419 ± 0.385). The average acuity difference was 4 lines. For maculopathy patients with VA ≤ 20/200, the ETDRS chart had a better score than the Landolt C chart.

Associated Clinical Trials

References

Jun 13, 1998·Optometry and Vision Science : Official Publication of the American Academy of Optometry·T W RaaschM A Bullimore
Jan 14, 2000·Acta Ophthalmologica Scandinavica·J Siderov, A L Tiu
Apr 18, 2000·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·C W McMonnies
Jun 1, 2000·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·C W McMonnies, A Ho
Aug 31, 2000·Optometry and Vision Science : Official Publication of the American Academy of Optometry·J E Lovie-Kitchin, B Brown
Mar 27, 2001·The British Journal of Ophthalmology·D A RosserI E Murdoch
Jul 29, 2003·Investigative Ophthalmology & Visual Science·Daniel A RosserDavid A H Laidlaw
Oct 1, 2003·American Journal of Ophthalmology·Paisan RuamviboonsukPatcharapim Masayaanon
Dec 1, 2005·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Ava K KiserGislin Dagnelie
Aug 1, 2006·Investigative Ophthalmology & Visual Science·Walter WittichDonald H Watanabe
May 24, 2008·Ophthalmologica. Journal international d'ophtalmologie. International journal of ophthalmology. Zeitschrift für Augenheilkunde·Tanya Natasha MoutrayA J Jackson
Oct 3, 2008·Investigative Ophthalmology & Visual Science·Michael A WilliamsA Jonathan Jackson

❮ Previous
Next ❯

Citations

May 29, 2014·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Simone KoenigSven P Heinrich
Aug 19, 2015·Telemedicine Journal and E-health : the Official Journal of the American Telemedicine Association·Soolienah RhiuJae-Hyung Kim
Sep 11, 2012·Clinical & Experimental Ophthalmology·Lauren N AytonChi D Luu
Jan 10, 2013·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Eleni PoulereSotiris Plainis
Nov 11, 2016·Journal of Current Ophthalmology·Saeedeh GhorbanhosseiniMehdi Khabazkhoob
Apr 21, 2018·Indian Journal of Ophthalmology·Kalpa NegiloniKrishna Kumar Ramani
Jan 15, 2013·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Sotiris PlainisJoanna Moschandreas
Mar 6, 2019·Scientific Reports·Li-Ting TsaiChien-Chung Chen
May 19, 2020·Evidence-based Complementary and Alternative Medicine : ECAM·Yue ZhaoXiaofei An
Jun 28, 2021·International Ophthalmology·Teresa Lupión DuránJosé Manuel García-Campos
Aug 8, 2021·International Journal of Environmental Research and Public Health·María Carmen Sánchez-GonzálezConcepción De-Hita-Cantalejo
Sep 18, 2021·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Andrew CarkeetYee Teng Goh

❮ Previous
Next ❯

Related Concepts

Related Feeds

Birth Defects

Birth defects encompass structural and functional alterations that occur during embryonic or fetal development and are present since birth. The cause may be genetic, environmental or unknown and can result in physical and/or mental impairment. Here is the latest research on birth defects.