An Ophthalmoscope contains a number of components to allow the practitioner to view the fundus clearly.
- Viewing Window: Allows the physician the view the fundus of the eye
- Brow Rest: For best viewing, the brow rest typically presses gently against the practitioners’s brow or eye glasses
- Lens Wheel: Rotating changes the lens which alters the focal point. The greater the number of lenses, the more focused the view. Pocket sets typically offer 17-28 lenses. Full size instruments can provide over 60 lens options. Lens are measured in diopeters and typically available in + and –
- Illuminated lens viewing window: Displays the selected lens to the practitioner
- Power Switch: Pocket sets typically have a simple on/off power switch. Full size sets feature a reostatic power switch to permit control of light intensity
- Battery Handle: May be AC powered, rechargeable battery or alkaline. Typical voltages are 2.5v (most common in pocket sets) and 3.5v in full size premium sets
The Welch Allyn PanOptic Ophthalmoscope is the leading Ophthalmoscope model on the market. It has a 5 times greater view of the back of the eye and an increase of 26% in magnification. It provides a significantly larger view of the retina with significantly less skill required. Thanks to it’s advanced design and features, prices for the Welch Allyn PanOptic Opthalmoscope Head start from $717.54 ex GST.
The most common model on the market and the model that is most often included in Diagnostic Sets is the Welch Allyn Coaxial Ophthalmoscope. Coaxial Ophthalmoscopes require higher levels of training and skill to operate however they are often a more economical option for many practices. Prices for the Welch Allyn Coaxial Ophthalmoscope Head start from $378.15 ex GST.
Pocket sized Ophthalmoscopes have the simplest amount of features thanks to their smaller, more compact size. They offer a narrow range of filter options yet are highly portable and durable. Prices for Welch Allyn Pocket Ophthalmoscopes start from $183.08 ex GST.
Welch Allyn Ophthalmoscopes
Welch Allyn are the leading manufacturer of high quality Ophthalmoscopes. A variety of models are available with the most common being the 3.5V Coaxial Opthalmoscope, PanOptic Ophthalmoscope, Pocket LED Ophthalmoscope and Pocket Plus LED Ophthalmoscope.
With the 3.5V Coaxial and PanOptic models, you have the choice of Halogen HPX or SureColor LED globes depending on your budget and clinical needs.
The first ophthalmoscope was invented by English mathematician Charles Babbage (1792-1871) in 1847. Babbage gave the device to a physician for testing, but it was laid aside and forgotten. Four years later, German physician and physiologist Hermann von Helmholtz (1821-1894) developed his own version of the ophthalmoscope. Helmholtz was unaware of Babbage’s instrument but because he had better luck making his device known, Helmholtz is often credited as the sole inventor.