Sine Amsler Charts: a new method for the follow-up of metamorphopsia in patients undergoing macular pucker surgery

M Dimitri Bouwens; Jan C Van Meurs

doi:10.1007/s00417-002-0613-5

Sine Amsler Charts: a new method for the follow-up of metamorphopsia in patients undergoing macular pucker surgery

M Dimitri Bouwens, Jan C Van Meurs

Vitreoretinal surgery

Research output: Contribution to journal › Article › Research › peer-review

Abstract

PURPOSE: To evaluate our new method for the follow-up of metamorphopsia in patients with a macular pucker.

METHODS: Sine Amsler Charts (SAC) are a set of eight modified Amsler charts where we have replaced the straight lines by sine curves of the same frequency but with different amplitudes (grades I-VIII). The patient first examines a regular Amsler chart with the affected eye; subsequently the SAC are presented in random order to the fellow eye. With this eye the patient then selects the SAC with the amplitude that best corresponds to the metamorphopsia observed with the affected eye. After 30 min the test was repeated. A comparison of pre- and postoperative SAC scores was made in 63 patients. The correlations between preoperative visual acuity, membrane type, leakage on fluorescein angiography, preoperative SAC score, postoperative SAC score and postoperative visual acuity were analyzed.

RESULTS: Preoperative repeat testing with the SAC revealed 100% reproducibility in the grading of metamorphopsia. Postoperative SAC was unchanged in 16% of cases, one grade lower in 54%, two grades lower in 21% and more than two grades lower in 7%. Postoperative visual acuity was unchanged (i.e., within two EDTRS lines of the preoperative value) in 49% of cases, improved in 48% and decreased in 3%. A decrease in SAC score with a two-line increase in visual acuity occurred in 43% of cases.

CONCLUSION: The SAC examination is a reproducible and rapid method for the comparison of the preoperative and postoperative metamorphopsia in patients undergoing pucker surgery and it may serve as an additional outcome measure.

Original language	English
Pages (from-to)	89-93
Number of pages	5
Journal	Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie
Volume	241
Issue number	2
DOIs	https://doi.org/10.1007/s00417-002-0613-5
Publication status	Published - Feb 2003

Keywords

Aged
Epiretinal Membrane/complications
Female
Follow-Up Studies
Humans
Male
Reproducibility of Results
Vision Disorders/classification
Vision Tests/instrumentation
Visual Acuity
Vitrectomy

Access to Document

10.1007/s00417-002-0613-5

Cite this

@article{75e35733bed24c3fb99a24b92cde683a,

title = "Sine Amsler Charts: a new method for the follow-up of metamorphopsia in patients undergoing macular pucker surgery",

abstract = "PURPOSE: To evaluate our new method for the follow-up of metamorphopsia in patients with a macular pucker.METHODS: Sine Amsler Charts (SAC) are a set of eight modified Amsler charts where we have replaced the straight lines by sine curves of the same frequency but with different amplitudes (grades I-VIII). The patient first examines a regular Amsler chart with the affected eye; subsequently the SAC are presented in random order to the fellow eye. With this eye the patient then selects the SAC with the amplitude that best corresponds to the metamorphopsia observed with the affected eye. After 30 min the test was repeated. A comparison of pre- and postoperative SAC scores was made in 63 patients. The correlations between preoperative visual acuity, membrane type, leakage on fluorescein angiography, preoperative SAC score, postoperative SAC score and postoperative visual acuity were analyzed.RESULTS: Preoperative repeat testing with the SAC revealed 100% reproducibility in the grading of metamorphopsia. Postoperative SAC was unchanged in 16% of cases, one grade lower in 54%, two grades lower in 21% and more than two grades lower in 7%. Postoperative visual acuity was unchanged (i.e., within two EDTRS lines of the preoperative value) in 49% of cases, improved in 48% and decreased in 3%. A decrease in SAC score with a two-line increase in visual acuity occurred in 43% of cases.CONCLUSION: The SAC examination is a reproducible and rapid method for the comparison of the preoperative and postoperative metamorphopsia in patients undergoing pucker surgery and it may serve as an additional outcome measure.",

keywords = "Aged, Epiretinal Membrane/complications, Female, Follow-Up Studies, Humans, Male, Reproducibility of Results, Vision Disorders/classification, Vision Tests/instrumentation, Visual Acuity, Vitrectomy",

author = "Bouwens, {M Dimitri} and {Van Meurs}, {Jan C}",

year = "2003",

month = feb,

doi = "10.1007/s00417-002-0613-5",

language = "English",

volume = "241",

pages = "89--93",

number = "2",

}

Sine Amsler Charts: a new method for the follow-up of metamorphopsia in patients undergoing macular pucker surgery. / Bouwens, M Dimitri; Van Meurs, Jan C.
In: Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie, Vol. 241, No. 2, 02.2003, p. 89-93.

Research output: Contribution to journal › Article › Research › peer-review

TY - JOUR

T1 - Sine Amsler Charts

T2 - a new method for the follow-up of metamorphopsia in patients undergoing macular pucker surgery

AU - Bouwens, M Dimitri

AU - Van Meurs, Jan C

PY - 2003/2

Y1 - 2003/2

N2 - PURPOSE: To evaluate our new method for the follow-up of metamorphopsia in patients with a macular pucker.METHODS: Sine Amsler Charts (SAC) are a set of eight modified Amsler charts where we have replaced the straight lines by sine curves of the same frequency but with different amplitudes (grades I-VIII). The patient first examines a regular Amsler chart with the affected eye; subsequently the SAC are presented in random order to the fellow eye. With this eye the patient then selects the SAC with the amplitude that best corresponds to the metamorphopsia observed with the affected eye. After 30 min the test was repeated. A comparison of pre- and postoperative SAC scores was made in 63 patients. The correlations between preoperative visual acuity, membrane type, leakage on fluorescein angiography, preoperative SAC score, postoperative SAC score and postoperative visual acuity were analyzed.RESULTS: Preoperative repeat testing with the SAC revealed 100% reproducibility in the grading of metamorphopsia. Postoperative SAC was unchanged in 16% of cases, one grade lower in 54%, two grades lower in 21% and more than two grades lower in 7%. Postoperative visual acuity was unchanged (i.e., within two EDTRS lines of the preoperative value) in 49% of cases, improved in 48% and decreased in 3%. A decrease in SAC score with a two-line increase in visual acuity occurred in 43% of cases.CONCLUSION: The SAC examination is a reproducible and rapid method for the comparison of the preoperative and postoperative metamorphopsia in patients undergoing pucker surgery and it may serve as an additional outcome measure.

AB - PURPOSE: To evaluate our new method for the follow-up of metamorphopsia in patients with a macular pucker.METHODS: Sine Amsler Charts (SAC) are a set of eight modified Amsler charts where we have replaced the straight lines by sine curves of the same frequency but with different amplitudes (grades I-VIII). The patient first examines a regular Amsler chart with the affected eye; subsequently the SAC are presented in random order to the fellow eye. With this eye the patient then selects the SAC with the amplitude that best corresponds to the metamorphopsia observed with the affected eye. After 30 min the test was repeated. A comparison of pre- and postoperative SAC scores was made in 63 patients. The correlations between preoperative visual acuity, membrane type, leakage on fluorescein angiography, preoperative SAC score, postoperative SAC score and postoperative visual acuity were analyzed.RESULTS: Preoperative repeat testing with the SAC revealed 100% reproducibility in the grading of metamorphopsia. Postoperative SAC was unchanged in 16% of cases, one grade lower in 54%, two grades lower in 21% and more than two grades lower in 7%. Postoperative visual acuity was unchanged (i.e., within two EDTRS lines of the preoperative value) in 49% of cases, improved in 48% and decreased in 3%. A decrease in SAC score with a two-line increase in visual acuity occurred in 43% of cases.CONCLUSION: The SAC examination is a reproducible and rapid method for the comparison of the preoperative and postoperative metamorphopsia in patients undergoing pucker surgery and it may serve as an additional outcome measure.

KW - Aged

KW - Epiretinal Membrane/complications

KW - Female

KW - Follow-Up Studies

KW - Humans

KW - Male

KW - Reproducibility of Results

KW - Vision Disorders/classification

KW - Vision Tests/instrumentation

KW - Visual Acuity

KW - Vitrectomy

U2 - 10.1007/s00417-002-0613-5

DO - 10.1007/s00417-002-0613-5

M3 - Article

C2 - 12605261

SN - 0721-832X

VL - 241

SP - 89

EP - 93

JO - Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie

JF - Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie

IS - 2

ER -

Sine Amsler Charts: a new method for the follow-up of metamorphopsia in patients undergoing macular pucker surgery

Abstract

Keywords

Access to Document

Fingerprint

Cite this