eLetters

626 e-Letters

  • Inversed optokinetic nystagmus

    Editor,
    We read with interest the article by Valmaggia et al[1] who studied OKN in patients with macular degeneration. They noted abnormalities of OKN gain only in patients with large central scotomas. Therefore an intact macula seems not to be necessary for the generation of OKN. This implicitly suggests an important role of the peripheral retina in eliciting an OKN. In this context, it is interes...

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  • TDLC in inflammatory glaucoma

    Editor,
    I read the article by Schlote et al with interest. The aim of their study was to determine the safety and effectiveness of transscleral diode laser cyclophotocoagulation (TDLC) in post inflammatory eyes with refractory glaucoma. In addition, the authors have rightly pointed out that management of inflammatory glaucoma is still a dilemma as many of the antiglaucoma drugs are either contraindica...

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  • Intravitreal injection of crystalline cortisone in treatment of retinal vasoproliferative

    Editor,
    We would like to congratulate Heimann and colleagues for their study on 21 patients presenting with retinal vasoproliferative tumours treated by cryotherapy, brachytherapy or enucleation. We wonder whether an intravitreal injection of crystalline cortisone, as single procedure or in combination with the strategies described by the authors' study, may be an additional option in the therapeutic...

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  • Schaffer's sign

    Editor,
    We read Tanner et al's paper on the predictive value of vitreous pigment (Schaffer's sign) for retinal breaks in posterior vitreous detachment1 with great interest. Based on their figures, patients who have a negative Schaffer's sign had a 1% chance of having a retinal tear or hole and a 0.5% chance of having a lesion for which prophylaxis was thought to be appropriate. Thus Schaffer's sign ha...

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  • Cause of vitamin A deficiency in coeliac disease

    Editor,
    With great interest we read the case report by Dr. Alwitry on "Vitamin A deficiency in coeliac disease", which raises the question whether a deficiency of vitamin A with subsequent keratomalacia may be caused by this disorder. However, although coeliac disease cannot be excluded as a cause of reduced vitamin A absorption,[1] Alwitry's report does not convincingly show that the vitamin A deficie...

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  • Tonometry and central corneal thickness

    Editor,
    I read the article by Bechmann et al with interest, and I congratulate the authors on their work. In the discussion, they cover the entire subject of tonometry on the basis of the central corneal thickness (CCT). With the increasing number of corneal refractive procedures performed every year, this point will be associated with much uncertainty for diagnosing glaucoma in the near future. Appare...

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  • Capsularrhexis with dye

    Dear Sir,
    In India, we very commonly see mature cataracts. Doing capsulorhexis with injection of dye is done very routinely by many of us. Forunately no untoward reaction has been reported so far. This helps us to carry out the phaco procedure with ease.

  • Mooren's ulcer in Cameroun

    Dear Sir,
    I was fascinated by Cheng and colleagues' article on Mooren's ulcer in China. During the past 6 years I have worked for 3 years as an ophthalmologist in rural Cameroun. I submit to you my experiences of Mooren's ulcer there :

    Patients: 5 (4 male, 1 female).
    Age: 1 patient aged 48 years, the rest all late teens and twenties.

    Out of 3 patients we tested (foll...

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  • Perception of pain during anaesthesia

    Editor,
    We read with interest the paper by Minasian et al. They quote that pain experienced during an injection is related to the temperature of the injection and the speed of delivery of the solution.[1] [2]

    In their article, they have used all anaesthetics at room temperature. We have been pre-warming our anaesthetic solutions routinely for cataract surgery. We use a heat pad (Dreamland appliance...

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  • Visual field defects after vitrectomy with fluid-air exchange

    Editor,
    The paper by Cullinane and Cleary presents an excellent prospective study of peripheral visual field loss in patients undergoing macular hole surgery. The authors compared vitrectomy with complete posterior cortical vitreous peeling to limited vitrectomy with removal of cortical vitreous off the macula, but not off the optic nerve head or the peripheral retina. The authors showed a statistically...

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