Neodymium:YAG laser capsulotomy: a clinical morphological analysis

Aslam, Tariq; Dhillon, Baljean

doi:10.1007/s00417-002-0578-4

Cited by 16 publications

(10 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…R 2 indicates the proportion of variation in the dependent variable (represented on the y-axis) that can be explained by the independent variable (represented on the x-axis). Eye slightly decentred ones, 29 in our study the size of capsulotomy was established as being larger than the pupillary diameter in dark conditions 30 since a smaller capsulotomy size could affect the results of automated perimetry. 31 The test-retest interval (maximum eight weeks) was short enough to postulate that no true, detectable visual field progression occurred.…”

mentioning

confidence: 80%

Effect of posterior capsular opacification removal on automated perimetry

García-Medina

Arbona-Nadal

et al. 2005

Eye

View full text Add to dashboard Cite

Purpose Although posterior capsular opacification (PCO) is a common phenomenon in a considerable number of ophthalmologic patients, no prospective controlled trials assessing its influence on automated perimetry exist. This technique continues as a standard in the diagnosis of glaucoma and neuroophthalmological diseases. The aim of the present report is to investigate the effect of PCO on automated visual field examination. Methods A total of 26 PCO affected eyes of 26 patients had Humphrey SITA standard (program 24-2) immediately before, and between 1 and 8 weeks after Neodymium : YAG capsulotomy. The effect of learning associated with repeated testing was controlled with automated perimetry before enrolment and visual fields of the fellow eye. Best-corrected visual acuity (BCVA), intraocular pressure (IOP), and global perimetric pre-and post-laser indices were compared using the Student's t-test for paired samples. Correlation and linear regression analyses were also performed. Results BCVA and mean deviation (MD) improved following capsulotomy. Pattern standard deviation (PSD), an indicator of localized defects in the field, also improved significantly when PCO was solved. Moreover, a strong association among BCVA, MD, and PSD was shown both prior to and after capsulotomy. Conclusion PCO is a heterogeneous mean opacity. This polymorphism may alter visual field results, and may even simulate the perimetric behaviour of other pathologies such as glaucoma. Consequently, the presence of PCO should be considered in the interpretation of any automated perimetry in pseudophakic patients. In addition, the values obtained before capsulotomy may partially predict the values obtained after capsulotomy.

show abstract

mentioning

confidence: 80%

Effect of posterior capsular opacification removal on automated perimetry

García-Medina

Arbona-Nadal

et al. 2005

Eye

View full text Add to dashboard Cite

show abstract

“…Retroilluminated photograph analysis by computer have been correlated with improvements in vision [22] but these tools are not available to most ophthalmologists in the examination room. Practitioners are able to subjectively estimate the amount of PCO on slit lamp examination of posterior capsule but often with more subtle PCO it is difficult to assess clinical relevance.…”

Section: Discussionmentioning

confidence: 99%

Methods of assessment of patients for Nd:YAG laser capsulotomy that correlate with final visual improvement

Aslam

Patton

2004

BMC Ophthalmol

View full text Add to dashboard Cite

BackgroundThis paper attempts to clarify the usefulness of various simple pre-operative measures in estimating the potential for a visually successful capsulotomy.Methods24 patients attending for capsulotomy had pre-operative measures of glare with BAT tester, visibility of posterior pole and grading of posterior capsular pearls and fibrosis seen at slit lamp. Visual function was measured before and after standardised capsulotomy. Correlations of the various preoperative measures with eventual visual function improvements were calculated.ResultsPearls at slit lamp and poor posterior pole visualisation were all correlated with improvements in visual acuity and contrast sensitivity after capsulotomy. Amount of fibrosis visible at slit lamp and glare assessment were not correlated with vision improvements after laser.ConclusionOf the various measures that are taken prior to Nd : YAG capsulotomy, some correlate with eventual visual improvement but for others no clinical utility was found. Practitioners should note these findings as they are especially of use in more questionable or high-risk cases to help determine whether referral for PCO treatment by Nd: YAG capsulotomy is likely to benefit the patient.

show abstract

“…Any obvious lines of capsule tear were treated with laser if deemed beneficial and overall energy used was kept to a minimum. Treatments were performed to produce small central capsulotomies of size approximately 2–3 mm diameter, in keeping with previously published research by the authors[17]. …”

Section: Methodsmentioning

confidence: 99%