Medarchitect Ophthalmic Pinhole Occluder - Black Purple Blue (Purple)

Description

• Multiple pinhole occluder flipper made of high impact resistant plastic. Can be sterilized with any non-solvent based germicide.
• Occluder is suitable for patients of any age, even children catch on quickly.
• Occluder is a versatile tool, it provides so many features for Ophthalmic and Optometric exams.
• Various color options to choose from: black, blue, purple.
• Customer Satisfaction GuaranteeIf you are not 100% satisfy with the purchase for any reason, don't hesitate to contact us to request a refund or replacement.

What is the pinhole occluder?
A pinhole occluder is an opaque disk with one or more small holes through it, used by ophthalmologists, orthoptists and optometrists to test visual acuity. The occluder is a simple way to focus light, as in a pinhole camera, temporarily removing the effects of refractive errors such as myopia. Because light passes only through the center of the eye's lens, defects in the shape of the lens (errors of refraction) have no effect while the occluder is used.
What does the pinhole occluder do?
The ophthalmologist, orthoptist or optometrist can estimate the maximum improvement in a patient's vision that can be attained by lenses to correct errors of refraction. This can be used to distinguish visual defects caused by refractive error, which improve when the occluder is used, from other problems, which do not. The pinhole occluder can also be used in testing visual acuity in mydriatic patients. In this case the pinhole occluder compensates for the inability to contract the iris assisting the eye in obtaining a retinal projection similar to that of a non-cycloplegic eye.
How to use?
Squinting and looking through a tiny hole made with a finger works similarly to a pinhole occluder, by blocking light through the outer parts of the eye's lens. An improvised pinhole has a similar but better effect. The same principle has also been applied as an alternative to corrective lenses: a screen of pinholes is mounted on an eyeglass frame and worn as pinhole glasses.
Differential diagnosis :
pinhole worsen vision: Macular diseases, central lens opacities
Vision static with pinhole: Amblyopia

Shipping and Returns

• We offer tracked shipping on all orders. Tracking information will be shared as soon as the order is dispatched.
• Please check the delivery estimate before adding a product to the cart. This is displayed for every product on the website.
• Available shipping methods and charges will be displayed at the time of checkout, depending on your exact location.
• All customers are entitled to a return window of 14 days, starting from the date of delivery of the product(s).
• Customers are advised to read our return policy for details of the return process, eligibility, refunds as well as cancellations or exchanges.
• In case of any issues or concerns about Shipping or Returns, please contact us and we will be happy to help.