Stereoacuity changes after laser in situ keratomileusis.

Purpose: To study changes in near and distance stereoacuity after laser in situ keratomileusis (LASIK).

Methods: A prospective interventional study was conducted at an apex tertiary care ophthalmology center in India. Near and distance stereoacuity was tested in 40 patients (80 eyes) who underwent LASIK for myopic correction and got unaided vision of 0.

Models for primary eye care services in India.

Blindness and visual impairment continues to be a major public health problem in India. Availability and easy access to primary eye care services is essential for elimination of avoidable blindness. 'Vision 2020: The Right to Sight - India' envisaged the need for establishing primary eye care units named vision centers for every 50,000 population in the country by the year 2020.

Agreement between diurnal variations of intraocular pressure by Tono-Pen and Goldmann applanation tonometer in patients on topical anti-glaucoma medication.

To estimate agreement in diurnal variations of intraocular pressure (IOP) by Tono-Pen (TP) and Goldmann applanation tonometer (GAT) in glaucoma patients on topical anti-glaucoma medication(s). IOP was measured at every 3 h from 7 a.m.

Prevalence of myopia and its risk factors in urban school children in Delhi: the North India Myopia Study (NIM Study).

Purpose: Assess prevalence of myopia and identify associated risk factors in urban school children.

Methods: This was a cross-sectional study screening children for sub-normal vision and refractive errors in Delhi. Vision was tested by trained health workers using ETDRS charts.

Graft rejection in pediatric penetrating keratoplasty: Clinical features and outcomes.

Purpose: Early presentation of rejection facilitates early initiation of treatment which can favor a reversible rejection and better outcome. We analyzed the incidence, clinical features including rejection-treatment period and outcomes following graft rejection in our series of pediatric corneal graft.

Materials And Methods: Case records of pediatric penetrating keratoplasty (PK) were reviewed retrospectively, and parameters noted demographic profile, indication of surgery, surgery-rejection period, rejection-treatment interval, graft outcome, and complications.

Accuracy of visual assessment by school teachers in school eye screening program in delhi.

Background: Although school eye screening is a major activity of the National Program for Control of Blindness, inadequate evidence exists about accuracy of school teachers in screening.

Objectives: Compare quality of referral for subnormal vision by school teachers and primary eye care workers (PECW) in school children and to establish appropriate cutoff for identification of subnormal vision in school going children.

Materials And Methods: This was a cross-sectional study involving school children studying in classes 1 to 9 in different schools of Delhi evaluated for sub-normal vision.

Corneal Polishing After Pterygium Excision With Motorized Diamond Burr: A Randomized Control Trial.

Purpose: To evaluate outcomes of motorized diamond burr polishing versus manual polishing after pterygium excision.

Setting: Dr. Rajendra Prasad Center for Ophthalmic Sciences, New Delhi.

A safe technique for in-the-bag intraocular lens implantation in pediatric cataract surgery.

Purpose: To describe a safe technique for in-the-bag intraocular lens (IOL) implantation in pediatric cataract patients who undergo lens aspiration with primary posterior capsulorhexis and anterior vitrectomy.

Methods: Sixty eyes of 45 consecutive patients with congenital/developmental cataract underwent lens aspiration with primary posterior continuous curvilinear capsulorhexis (PCCC) with anterior vitrectomy and in-the-bag IOL implantation using the described technique of IOL implantation using anterior capsule as support.

Results: All eyes had stable IOL at the end of surgery and none of the eyes had lens decentration/dislocation in posterior vitreous.

Comparison of polymerase chain reaction and standard microbiological techniques in presumed bacterial corneal ulcers.

To assess utility of PCR in the diagnosis of bacterial corneal ulcer and to compare sensitivity and specificity of this technique with conventional laboratory methods. A prospective nonrandomized investigative study conducted on 122 eyes of presumed bacterial keratitis. Samples were collected for bacterial and fungal culture and Gram stain smear.

Efficacy of oral valproic acid in patients with retinitis pigmentosa.

Purpose: To evaluate the efficacy of valproic acid (VPA) on visual function in patients with retinitis pigmentosa (RP).

Methods: Thirty patients (60 eyes) with typical RP were recruited for the study. Of these, 15 patients received oral VPA (500 mg once daily) for a period of 1 year (group 1) and the remaining 15 received no treatment (group 2) and served as controls.

Bilateral intraocular dirofilariasis.

Ocular dirofilariasis mostly presents as a subconjunctival or eyelid lesion. Intraocular dirofilarial infestation is rare. We report a case of a young woman who was accidentally detected to have a live motile worm in the anterior segment in one eye and a cystic lesion on the optic disc in the other eye.

Correlation between clinical features, magnetic resonance imaging, and histopathologic findings in retinoblastoma: a prospective study.

Objective: To correlate clinical features with histopathology findings in advanced intraocular retinoblastoma and to determine the diagnostic accuracy of magnetic resonance imaging (MRI) in detecting tumor invasion.

Design: Prospective, nonrandomized case series.

Participants: We included 75 patients with group E retinoblastoma.

Invasive aspergillosis of orbit in immunocompetent patients: treatment and outcome.

Objective: Invasive sino-orbital aspergillosis in immunocompetent patients is a rare clinical entity and often misdiagnosed. Invasive sino-orbital aspergillosis is potentially fatal; however, mortality may be avoided with timely treatment. Presently, there are no universal guidelines for its treatment.

Primary orbital mycosis in immunocompetent infants.

Fungal orbital infections are rare among children, especially in immunocompetent infants. Two infants presented to us with unilateral proptosis and swelling of the eyelids and periorbital area. Imaging showed an intraorbital mass causing proptosis and bony orbital expansion.

Comparison of the diagnostic ability of Moorfield's regression analysis and glaucoma probability score using Heidelberg retinal tomograph III in eyes with primary open angle glaucoma.

Purpose: To compare the diagnostic performance of the Heidelberg retinal tomograph (HRT) glaucoma probability score (GPS) with that of Moorfield's regression analysis (MRA).

Materials And Methods: The study included 50 eyes of normal subjects and 50 eyes of subjects with early-to-moderate primary open angle glaucoma. Images were obtained by using HRT version 3.

Effect of cataract surgery on retinal nerve fiber layer thickness parameters using scanning laser polarimetry (GDxVCC).

Purpose: To study the effect of cataract extraction on the retinal nerve fiber layer (RNFL) thickness, and assessment by scanning laser polarimetry (SLP), with variable corneal compensation (GDx VCC), at the glaucoma service of a tertiary care center in North India.

Materials And Methods: Thirty-two eyes of 32 subjects were enrolled in the study. The subjects underwent RNFL analysis by SLP (GDx VCC) before undergoing phacoemulsification cataract extraction with intraocular lens (IOL) implantation (Acrysof SA 60 AT) four weeks following cataract surgery.

The effect of different doses of intracameral bevacizumab on surgical outcomes of trabeculectomy for neovascular glaucoma.

Purpose: To prospectively evaluate the effect of 1.25 mg and 2.5 mg intracameral bevacizumab on surgical outcomes of trabeculectomy for neovascular glaucoma (NVG), with primary outcome measures being the regression of neovascularization of iris (NVI) and reduction of intraocular pressure (IOP).

Bilateral iridocorneal endothelial syndrome in a young girl with Down's syndrome.

We describe the occurrence of bilateral iridocorneal endothelial (ICE) syndrome with glaucoma in a young girl with Down's syndrome. A 16-year-old girl with Down's syndrome was found to have secondary glaucoma in the right eye with features of progressive iris atrophy in both eyes. She was uncontrolled on maximum tolerable medical therapy for glaucoma.

Ophthalmic manifestations of HIV infections in India in the era of HAART: analysis of 100 consecutive patients evaluated at a tertiary eye care center in India.

Purpose: To evaluate ophthalmic manifestations in patients with Human Immunodeficiency Virus (HIV) infection in the era of highly active antiretroviral therapy (HAART) at the apex institute for eye healthcare in India.

Method: This prospective study was undertaken between October 2004 and December 2005. A complete ophthalmological and systemic examination was performed on each patient.

Evaluation of distance and near stereoacuity and fusional vergence in intermittent exotropia.

Aim: To evaluate the role of distance and near stereoacuity and fusional vergence in patients with intermittent exotropia [X(T)] and their change after surgery.

Materials And Methods: This prospective interventional institution-based clinical study included 31 cases of X(T) requiring surgery and 33 age, sex-matched controls. All subjects underwent complete orthoptic assessment including near stereopsis (Randot stereogram) and distance stereopsis by polaroid stereo-projector apparatus using special paired slides and fusional vergence assessment at distance and near prism bar at baseline and one week, one month, three months and six months after surgery in X(T).