JCRS Highlights

THOMAS KOHNEN European Editor of JCRS

VOL: 47 ISSUE: 10 OCTOBER 2021

MULTIFOCAL IOL COMPLAINTS IN REVIEW

Blurred vision and dysphotopsias are the main complaints reported by patients dissatisfied with their multifocal IOLs, but most cases can be resolved by treating the cause of the visual disturbance, said Nick Mamalis MD in a guest editorial commemorating the 25th anniversary of the combined JCRS Journal. He notes the reported aetiologies for visual disturbances include residual ametropia, PCO, and a large pupil. Most cases are amenable to interventions such as refractive surgery, spectacles, and YAG laser capsulotomy, and IOL exchange is seldom required. The loss of contrast sensitivity can also give rise to dysphotopsias such as haloes and starbursts. Patient personality significantly affects perception and tolerance of these phenomena. N Mamalis, “Complications of multifocal intraocular lenses: What have we learned?”; 47(10): 1256–1257.

BIOMECHANICAL INDEX FOR ECTASIA

A new study suggests the combined biomechanical index (CBILVC) is highly sensitive and specific in distinguishing stable corneas from those with ectasia after laser vision correction. The CBI-LVC index is based on the Corneal Dynamic Response to air pressure, as recorded with the CorVis ST (Oculus) Scheimpflug camera. The retrospective, multicentre, clinical study included 736 eyes of 736 patients, 51 of whom had postLVC ectasia. The authors first used logistic regression analysis to determine the combination of corneal dynamic response parameters with the strongest correspondence to ectasia. In the validation dataset, the CBI-LVC index had a sensitivity of 93.3% and a specificity of 97.8%. The authors noted since the CBI-LVC index involves only biomechanical parameters, it can detect ectasia in eyes that have undergone laser vision correction, even when their corneas are normal in terms of topography and pachymetry. P Vinciguerra et al., “Detection of post laser vision correction ectasia with a new combined biomechanical index “; 47(10):1314–1318.

LAMINAR AIRFLOW IN CATARACT SURGERY

A mobile laminar airflow (LAF) device appears to be highly effective in reducing the amount of particulate matter and lint fibres within the sterile surgical field during cataract surgery, new research suggests. In a prospective case series involving 116 patients undergoing cataract surgery, those who underwent the procedures using a mobile LAF device had a significantly greater reduction, compared to controls, in the number of airborne particles sized 0.5 mm, 1.0 mm, and 1.5 mm entering the sterile surgical field. A companion study showed that significantly fewer lint fibres fell into the sterile surgical field in eyes undergoing cataract surgery with the LAF device compared to surgeries conducted without it. RH. Osher et al., “Purifying air over the operating field with a new mobile laminar airflow device to reduce the possibility of airborne contamination”, 47:1327–1332.