Optometry and Vision Science (OVS) Announces - August 2015
Coming in the August 2015 Optometry & Vision Science
Here are brief highlights. The online and printed copy will be available early-August. E-Publication Ahead-of-Print now available for all these articles at http://journals.lww.com/optvissci
Anthony J. Adams, OD, PhD, FAAO Editor-in-Chief
Differential Diagnosis Between Pigmented Fundus Lesions
Optometrists serve a critical role as primary eye-care practitioners. One commonly faced challenge is the differential diagnosis of pigmented lesions in the ocular fundus. Our authors provide a systematic review of lesions affecting the retinal pigmented epithelial cells using imaging modalities and other descriptive factors to provide a chair-side guide to assist the clinician in differential diagnosis.
Its Not Just Macular Edema in Uveitis
High definition optical coherence tomography (HD-OCT) scans of 413 eyes with uveitis over 2.5 years and found macular abnormalities in almost 60% out of the examined eyes. Vitreo-retina interface disorders constituted 23%. Since macular abnormalities are more frequent in uveitis compared to the general population, the authors recommend screening uveitis patients with HD-OCT.
What’s the Preferred Retinal Locus in Binocular Vision Loss? A New Instrument
Patients with central vision loss use a part of eccentric retina to perform visual tasks. This area, the Preferred Retinal Locus (PRL), until now could to identified with monocular imaging instruments. The authors use a new eye-tracker method to identify the location on the retina of the PRLs for the two eyes simultaneously. They find that all but one of 9 patients had PRLs in corresponding locations in the two eyes and at least one PRL always fell onto functional retina during binocular viewing.
Blue-Light Crosslinking for Human Scleral Reinforcement: Future Myopia Option?
The authors evaluated the biomechanical effects of collagen cross-linking (CXL) by riboflavin/blue light (460 nm) on 42 human scleral samples (10mm diameter) of donated human eyes. They found significant (3X greater) increase in biomechanical scleral strength at the optimal radiation level and suggest that the procedure may be relevant as a future novel method for slowing progressive myopia.
Is Severe Glaucomatous Visual Field Damage Associated with Thin Corneas?
Comparing about 60 participants with primary open angle glaucoma (POAG) and control group revealed a significantly greater intra-subject asymmetry in corneal central thickness (CCT) and a higher prevalence of significant intra-subject CCT difference in POAG patients as compared to normal subjects.
Alignment of IOLs for Pseudophakes with Single Source Purkinjemeter
Our authors use an infrared (IR) purkinjemeter and software approaches for measuring tilt, and decentration horizontally and vertically with 9-15 images to calculate intraocular lens (IOL) misalignment using Purkinje images. They propose 6 images are needed, statistically, to obtain reliable reproducible measures of lOL lens misalignment.
Judging Bulbar Redness Objectively
Our authors examine validity and reliability of a novel objective method of clinical assessment of bulbar redness (BR) of the conjunctiva using a newly developed corneal topographer. They compare this to three other subjective measures of BR and find good correlation.
Test-Retest Repeatability of Associated Phoria
Our authors looked at test-retest repeatability of the distance and near associated phoria tests for the MKH-Haase charts and other common clinical tests. They showed MKH-Haase charts and most of other common clinical tests had good repeatability at distance and near.
Near Work Impact on a Myopic Child's Posture
How do writing, reading, and playing handheld video games affect the posture of myopic children? The near-vision posture of 120 Chinese myopic schoolchildren was measured during these tasks by continuously recording working distance and head declination. Very close working distances were observed for Chinese myopic schoolchildren, particularly when they played handheld video games, raising concerns about myopia progression.
Sarcoidosis with Cicatrizing Conjunctivitis
The authors’ case reports emphasize the need for conjunctival biopsy in any patient with cicatrizing conjunctivitis. In these cases the cicatrizing conjunctivitis was a rare complication associated with sarcoidosis.
Bilateral Ocular Toxocariasis with Different Eye Presentations
Our authors report a rare case of bilateral ocular toxocariasis with a different clinical presentation in each eye. The patient was diagnosed with ocular toxocariasis using a serum enzyme-linked immunosorbent assay (ELISA) analysis of intraocular fluids and both eyes were successfully treated medically or surgically.
Genetic Tool to the Rescue in Best Vitelliform Macular Dystrophy
Best disease is an uncommon retinal dystrophy with bilateral central macular lesions of lipofuscin material. The authors describe an unusual case of Best disease presenting as bilateral solitary eccentric vitelliform lesions without macular involvement. Multimodal testing, including EOG, ERG, OCT, FAF, FA, and genetic sequencing analysis of BEST1 were included. The latter revealed a novel mutation.
Connecting Lumbar Surgery Seizure and Hemorrhagic Retinopathy
Our authors claim to report the first case of bilateral multiple, deep hemorrhagic retinopathy following lumbar surgery accompanied by a seizure. They urge consideration of eye examination following episodes of seizure, particularly following lumbar surgery.