47 e-Letters

published between 2011 and 2014

  • Quantifying Symptomatology in Convergence Insufficiency Using the Convergence Insufficiency Symptom Survey
    Eric Borsting

    We are in agreement with Horwood and associates that the Convergence Insufficiency Symptom Survey (CISS) was not designed as a screening tool for convergence insufficiency (CI) and thus should not be used as such. However, we would like to point out that their conclusion from their recent paper(1) that the "majority of subjects with clinical signs of CI (reduced convergence and fusional ranges) have no symptoms," is not...

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  • Recent trends in glaucoma surgery, accurately assessed? - A case for updated coding?
    Andrew Walkden

    We read with interest the recent article by Murphy, et al*. The authors report a six-fold increase in the use of glaucoma drainage devices (GDDs) between 2003 and 2012. They also note that non-penetrating glaucoma surgery (NPGS) and minimally-invasive glaucoma surgery (MIGS) were not analyzed due to the small numbers being undertaken. One confounder is MIGS have the same code as for GDDs & have been in the UK since...

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  • Details of participants in the study are incomplete.
    Sanjiv K Gupta

    I have read the article with great interest as it is one of the early reports of this emerging technology. Going through the article I noticed that though the inclusion criteria describe that the patients with refractive error less than 10 diopter of myopia and astigmatism less than 5 diopter were included, the results show only the average myopia and standard deviation. The range of spherical myopia is not given, though...

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  • Dua's Layer and Success of Non Penetrating Glaucoma Filtering surgery
    Sunil R Moreker

    Dear Editor,

    We read with interest the article on extension of Dua's layer into trabecular meshwork.(1)This knowledge has implications also in success of newer surgeries like deep sclerectomy. Deep Sclerectomy is a safer option to trabeculectomy but is known to fail in some cases (2)(3). Guedes et al(4) have investigated the factors affecting the success of this surgery. George Kistos et al (5) have discussed a...

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  • Reply to Response: Optical coherence tomography of the suprachoroid after CyPass Micro-Stent implantation for the treatment of open angle glaucoma
    Iqbal IK Ahmed

    We thank Huisingh and McGwin (1) for their interest and comments regarding our manuscript describing the optical coherence tomography (OCT) findings after CyPass Micro-Stent implantation for the treatment of open angle glaucoma (2). The importance of formal statistical analysis was considered at the time of submission. Given the small sample size of the study, and the descriptive nature of the study, we found that statist...

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    Fatih C. Gundogan

    Dear Editor, We congratulate Messenger et al. for their study entitled 'Characterization of uveitis in association with multiple sclerosis'.[1] The authors investigated clinical and demographic characteristics of multiple sclerosis (MS) patients with uveitis. The study has significant results including the ratios of anterior, intermediate and posterior uveitis in this group of MS patients.

    We found out that 54%...

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  • Three-year follow-up of posterior chamber toric phakic intraocular lens implantation for the correction of high myopic astigmatism in eyes with keratoconus.
    Shraddha P. Sureka

    Dear Editor,

    We read with great interest the article by Kamiya et al about use of toric implantable collamer lenses (ICL) in patients with keratoconus. [1] The results are very encouraging. However, we found some discrepancies in the study.

    The mean manifest spherical equivalent was -9.70 D, up to -13.75 D. The Amsler-Krumeich classification system stage 2 includes patients up to -8.0 D of myopia, as...

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  • Re:Reproducibility of aberrometry-based intraoperative refraction during cataract surgery, Statistical issues
    Jan O Huelle

    Dear Sirs, We are grateful to Sabour and Ghassemi for their interest in our recent article[1]. In our understanding, they query why we did not use intra class correlation (ICC) as a measure for precision. Our test-retest reliability (absolute agreement ICC) is derived from the maximum likelihood (LM) estimates of the one-way random effects model of the form: yij...

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  • An additional explanation for azithromycin's efficacy in treating meibomian gland dysfunction
    Yang Liu

    We would like to congratulate Dr. Kashkouli et al for their recently published paper "Oral azithromycin versus doxycycline in meibomian gland dysfunction: a randomized double masked open label clinical trial". The authors found that azithromycin induced a significantly better overall clinical response than doxycycline, and attributed this effect to the antibacterial and anti-inflammatory effects of azithromycin. However,...

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  • Reporting of harms in clinical trials: why do we continue to fail?
    Imran Mahmud

    O'Day and colleagues describe in their recent paper the inadequate reporting of harm in randomized controlled trials of intra-vitreal therapies for diabetic macular oedema(O'Day et al., 2014). At first glance, the results are alarming. An average of only six recommendations of the 2004 CONSORT guidelines extension covering harms were met. Ophthalmologists are not alone in their inadequate reporting, however. Several oth...

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