There are many reasons to check for stress in mounted lenses. Too much stress on a lens may not manifest itself until the day your patient exits a warm office building into sub-freezing temperatures and the lens implodes. Aside from viewing stress patterns you can determine axis in polarized lenses. This is a compact bench top model that you can hold in your hand. Operates using two AA batteries (included). 2-3/4" W x 2-3/4" H x 4" D.
Spend less time explaining vitreous floaters. This model of the eye demonstrates how floaters suspend and drift. It's a visual aid that minimizes patient confusion and cumulatively saves you hours of exam time.
Patients will easily see and quickly comprehend the how and why about "spots and floaters", without you having to give repetitive and possibly alarming explanations. A shake of the globe sends the "floaters" swirling, pausing and drifting downwards, replicating what the patient is experiencing.
The Vitreous Floater Demonstrator features mesh particles in a clear dense "vitreous fluid". The housing is made of transparent, durable molded plastic with an attractive eye applique.