1. Beyond photography: Evaluation of the consumer digital camera to identify strabismus and anisometropia by analyzing the Bruckner′s reflex
- Author
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Sadat Ao Bani, Richa Sharma, Alam Danish, and Abadan K Amitava
- Subjects
Male ,positron emission tomography ,visual acuity ,standard automated perimetry ,lcsh:Ophthalmology ,High myopia ,Photography ,Inverted internal limiting membrane flap technique ,Infectious scleritis ,oculosporidiosis ,optic nerve hypoplasia ,Child ,visual functions ,myelination ,Equipment Design ,logMAR ,spectral domain optical coherence tomography ,Child, Preschool ,Posterior open globe injuries ,visual outcome ,oligodendrocytes ,retinal nerve fi ber layer ,Amblyopia ,anisometropia ,Multiple sclerosis ,juvenile-onset primary open angle glaucoma ,Vision Screening ,Age groups ,Frequency doubling technology perimetry ,Ocular ,Humans ,Congenital ectropion ,Strabismus ,pediatric visual field testing ,electron microscopy ,zone III open globe injuries ,medicine.disease ,eye diseases ,strabismus ,macular hole ,Ophthalmology ,glaucoma ,lcsh:RE1-994 ,pachymetry ,Gujarati ,isolated abducens nerve palsy ,Kappa ,validity ,Coat′s like response ,genetic structures ,canalicular laceration repair ,photoscreening ,monocanalicular stent ,Reflex, Pupillary ,scleritis ,Central corneal thickness ,pigmented paravenous chorioretinal atrophy ,Diabetic retinopathy ,outer retinal layer thickness ,hyperhomocysteinemia ,nontraumatic ,Abducens nerve palsy ,ocular infection ,microbial scleritis ,Middle Aged ,tuberculosis ,Female ,Glaucoma severity ,Adult ,down syndrome ,Adolescent ,retinal nerve fiber layer thickness ,congenital lax upper eyelid syndrome ,nerve fiber layer ,Brief Communication ,Young Adult ,renal transplant ,medicine ,digital camera ,repeatability ,Rhinosporidium ,Anisometropia ,optic neuritis ,optical coherence tomography ,Retinochoroiditis radiata ,business.industry ,Inner retinal layer thickness ,Axon diameter ,Reproducibility of Results ,visual field defects ,congenital floppy eyelid syndrome ,Dacryocystectomy ,macular hole surgery ,20G Silicone rod ,congenital eyelid imbrication syndrome ,Reflex ,Optometry ,posterior to rectus insertion ,pathology ,business ,juvenile glaucoma ,reduced vision - Abstract
Amblyopia screening is often either costly or laborious. We evaluated the Canon Powershot TX1 (CPTX1) digital camera as an efficient screener for amblyogenic risk factors (ARF). We included 138 subjects: 84-amblyopes and 54-normal. With the red-eye-reduction feature off, we obtained Bruckner reflex photographs of different sized crescents which suggested anisometropia, while asymmetrical brightness indicated strabismus; symmetry implied normalcy. Eight sets of randomly arranged 138 photographs were made. After training, 8 personnel, marked each as normal or abnormal. Of the 84 amblyopes, 42 were strabismus alone (SA), 36 had anisometropia alone (AA) while six were mixed amblyopes (MA). Overall mean sensitivity for amblyopes was 0.86 (95% CI: 0.83-0.89) and specificity 0.85 (95% CI: 0.77-0.93). Sub-group analyses on SA, AA and MA returned sensitivities of 0.86, 0.89 and 0.69, while specificities were 0.85 for all three. Overall Cohen's Kappa was 0.66 (95% CI: 0.62-0.71). The CPTX1 appears to be a feasible option to screen for ARF, although results need to be validated on appropriate age groups.
- Published
- 2013