Volk Optical Laser Lenses

Distributor Product Presentation December, 2009

Overview

• Volk Optical has introduced two new high resolution (HR) lenses for laser photocoagulation – The HR Wide Field for Pan Retinal Photocoagulation (PRP) – The HR Centralis for focal and grid laser therapy • Both lenses feature double aspheric designs and high grade, low dispersion glass which gives superior imaging quality.

• Both lenses may also be used as diagnostic lenses only.

• The lenses improve upon and replace the previous generation Superquad 160 and Area Centralis lenses.

• Primary conditions diagnosed and treated are diabetic retinopathy and maculopathy.

• Lenses can also be used to diagnose and treat other conditions such as retinal tears, breaks and holes.

HR Centralis Lens

• Lens for detailed posterior pole examination and laser focal/grid treatment • Lens is an upgrade or replacement for: – Volk Optical Area Centralis – Ocular Mainster 1X Retina – Ocular Mainster Focal/Grid • Main sales argument is better image quality and stereopsis at the extreme of the lens view • • Specifications: FOV 74º, magnification 1.08x, laser spot 0.92x

Link to lens page on Volk Optical website

Features and Benefits

• Enhanced double aspheric design eliminates distortion and improves stereopsis to the periphery of the view • Superior, high grade, low dispersion glass delivers unsurpassed resolution • Improved capability with pupils as small as 4mm • Reduced sized housing helps manipulation within the orbit

HR Wide Field Lens

• Lens for extreme wide field examination and laser PRP treatment • Lens is an upgrade or replacement for: – Rodenstock pan fundus lens – Volk Optical Superquad 160 – Ocular Instruments Mainster PRP 165 • Main sales argument is better image quality at the extreme periphery of the lens view • • Specifications: FOV 160º, magnification 0.5x, laser spot 2.0x

Link to lens page on Volk Optical website

Features and Benefits

• Widest field of view and treatment area to the ora serrata • Superior, high grade, low dispersion glass design eliminates distortion at the extreme periphery • Much smaller and easier to manipulate within patient’s orbit • Short length of lens helps manipulate in front of laser

Diabetes Overview

• Diabetic retinopathy serious complication of diabetes mellitus • Commonest cause of blindness in 20-74 age range • Two stage progression with recognised opthalmoscopically visible signs: – Background Diabetic Retinopathy • Microaneurysms – Proliferative Diabetic Retinopathy • Retinal haemorrhages, cotton wool spots • Diabetic maculopathy is involvement of macula

Diabetic Retinopathy

• Early stage background diabetic retinopathy – Hemorrhages and ‘cotton wool’ spots • Proliferative diabetic retinopathy – Neovascularisation with weak ateries which bleed into vitreous ’floaters’

Laser Therapy 1

• •

Pan Retinal Photocoagulation (PRP)

Objective is to destroy oxygen deprived tissue and prevent neovacularisation Lenses used are: –

HR Wide Field

– Superquad 160 • •

Focal/grid therapy

Photocoagulation near macula Lenses used are: –

HR Centralis

– Area Centralis

Laser therapy 2

Lens summary

•

Diagnostic

–

Digital Wide Field

• Slit lamp diagnostic retinal screening even through non-dilated pupil –

Digital High Mag

• Slit lamp examination of nerve fibre layer, macula and optic disk –

Digital 1.0x

• Optic disc measurement and photographic recording •

Treatment

–

H-R Wide Field

• Panretinal Photocoagulation (PRP) for diabetic retinopathy • Retinal breaks and tears –

HR Centralis

• Focal/Grid Laser for diabetic macula oedema, microaneurysms and haemorrhage • Macular hole