Agriculture
December 27, 2023
AquaFilter Family
Read SolutionImplemented by
Aquabox, UK
Updated on February 5, 2024
·Created on July 17, 2014
OneDollarGlasses are low-cost corrective lenses.
These glasses are designed to be low cost for people who cannot otherwise afford corrective lenses.
Target SDGs
SDG 3: Good Health and Well-Being
Market Suggested Retail Price
$7.00
Target Users (Target Impact Group)
Household
Distributors / Implementing Organizations
- Partner NGOs: Grameen Health Care, Grameen Kalyan (Bangladesh), AMPO (Burkina Faso), Horizon de l'Espoir / WEMA Home (Benin); Hostelling International (Bolivia); Renovatio / Enactus Insper (Brasil) - District Hospitals, Optometrists, Ophthalmologists - Local structures of OneDollarGlasses Assosiation.
Competitive Landscape
Direct competitors include Adspecs and Eyejusters.
Manufacturing/Building Method
People get trained on the bending machines. One person can produce about 16 frames per day.- approx 15 min per frame. Centralized quality assurance of frames. According to the number of eyeglasses distributed, the number of manufacturers may be increased. They provide a partner organization in each country with a list of characteristics, and the partner chooses people to attend the two to three week training. Of the people who begin the training, around 30% are well-suited for the job.
Intellectural Property Type
Select Type
User Provision Model
These glasses are distributed by NGOs, hospitals, and other organizations that provide vision correction services. They are manufactured by local people on a bending machine. These people are trained by OneDollarGlasses and partner organizations to be mobile opticians and to make and sell these glasses.
Distributions to Date Status
Over 10,000 pairs of glasses have been distributed to date.
Lens technology (type)
Polycarbonate lens with hardened surface, elliptic 45×28 mm
Near vision power range
+6 -> 0 D
Distance vision power range
0 -> -6 D
Glasses weight (g)
10-18g
Frame dimensions (mm)
56-70mm. Three predefined sizes may be adapted to local requirements
UV protection (ray type blocked)
UVB and most UVA rays
Frame features to adjust to face
– Bridge size variable
– Length of side pieces variable
– Length and shape of temples are fully adjustable
Minimum age of user (years)
5 years
Readjustable (yes/no)
Yes. Screwless frame.
Frame material
Stainless spring steel wire; Shrink tubing from Polyolefine
Design Specifications
The spectacle frames consist of a lightweight and flexible frame made of extremely robust, rustproof and hypoallergenic spring steel wire (1 mm). Different physiognomies can be taken into account individually when bending the frame. The elliptical polished, unbreakable lenses are given the notches and steps for fastening in the spectacle frames on the milling attachment and can be inserted in no time. Heat-shrinkable sleeves made of hypoallergenic plastic on the ear piece ends increase the wearing comfort of the glasses. Because the glasses have very little weight, they do not require nosebridges. Two coloured glass pearls give each pair of glasses its own personal design.
Technical Support
Sellers are trained to adjust temples to the face of the patient. Manufacturers are trained until they are able to produce frames according to quality criteria. Technical support available, but maintenance is not necessary.
Replacement Components
Replacement components are not available.
Lifecycle
Unknown
Manufacturer Specified Performance Parameters
Targets include:
Vetted Performance Status
Unknown.
Safety
Lenses and frames are almost unbreakable. Wire and shrink tubing are from skin friendly material. UV protection available. Hence, OneDollarGlasses pose little to no risk to their users.
Complementary Technical Systems
None
Academic Research and References
Smith K, Weissberg E, Travison TG. “Alternative Methods of Refraction: A Comparison of Three Techniques.” Optom Vis Sci. (2010)
Siemens. “OneDollarGlasses.” Empowering People Network, 2021.
Compliance with regulations
The One Dollar glasses meets all standards of the Rwandan (RBS) and the Ministry of Health.
Evaluation methods
XRF Spectrometry: * DIN EN ISO 14889 : 2003 * DIN EN ISO 8980-1 : 2004 * DIN EN ISO 8980-3 : 2005
Other Information
Unknown.
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