End Notes

1.Information provided by DOT Glasses in 2024↩︎

2.Shopify [Link] ↩︎

3.Lenskart company official e-commerce platform, retrieved in 2023↩︎

4.Information provided by Mike Optical in 2023↩︎

5.Information provided by Weilan Optical in 2023↩︎

6.Information provided by Ouhai Glasses in 2023↩︎

7.Information provided by Pilot Optics in 2023↩︎

8.Wenzhou Hengbo company official Alibaba website [Link] ↩︎

9.Information provided by Readsun in 2023↩︎

10.Product Catalogue from VisionSpring company official website, retrieved in 2023↩︎

11.Information provided by VisionSpring. Please note that VisionSpring glasses mostly sell in the range of 1.00 - 3.00 depending on costs to import and level of quality of the glasses and frames.↩︎

12.Information provided by Zhantai Optical in 2023↩︎

13.Zeiss product catalogue [Link] ↩︎

14.Smartbuyglasses.com [Link] ↩︎

15.Conant company official Alibaba website [Link] ↩︎

16.UC: Uncoated (The lenses are not coated), HC: Hard Coat (These lenses are coated with a protective coating that increases the abrasion resistance of the lens material. It is strongly recommended that all plastic lenses be hard coated), HMC: Hard Multi-Coat (The Hard Multi-Coat is an integration of 2 types of coatings. 1. Hard Coat - to increase the abrasion resistance of the lens 2. Anti-Reflection Coat (AR) - to increase the transmittance of the lens and reduce surface reflections.), SHMC: Super Hydrophobic Multi Coating (This is an advanced multi coat which makes the lens water & oil repellent).↩︎

17.Information provided by DOT Glasses in 2024↩︎

18.Kerala Opticals, [Link] ↩︎

19.Hongchen company official Alibaba website [Link] ↩︎

20.Eyewear24. Net [Link] ↩︎

21.The benefits of Hoya’s Hi-Vision aqua coating, [Link] ↩︎

22.COC Eyewear, [Link] ↩︎

23.SW Optical company official website, [Link] ↩︎

24.Vivo Optics company official website [Link] ↩︎

25.Wanxin company official website [Link] ↩︎

26.Yoli company official Alibaba website [Link] ↩︎

27.Select company official Alibaba website [Link] ↩︎

28.Information provided by Mike Optical in 2023↩︎

29.Pilot Optics company official Alibaba website [Link] ↩︎

30.Safilo company official website, [Link] ↩︎

31.Smartbuyglasses.com [Link] ↩︎

32.VisionSpring 22-23 Product Catalog↩︎

33.Information provided by Weilan Optical↩︎

34.Readsun company official Alibaba website [Link] ↩︎

35.Readsun company official Alibaba website [Link] ↩︎

36.Information provided by Zhantai Optical↩︎

37.Essilor See Change official website, [Link] ↩︎

38.Global Vision 2020 official website, [Link] ↩︎

39.Phonak Vitus/Vitus+ User Guide [Link] ↩︎

40.Product Information provided by Phonak [Link] ↩︎

41.Indicative price provided by Phonak [Link] ↩︎

42.Product Information provided by Phonak [Link] ↩︎

43.Phonak Naida B User Guide [Link] ↩︎

44.Product information provided by Unitron [Link] ↩︎

45.Price list provided by Widex, 2020 [Link] ↩︎

46.Price list provided by Signia, 2023[Link] ↩︎

47.Ibid↩︎

48.Price listed in BDhearingstall company official website [Link] ↩︎

49.Indicative price provided by ReSound, 2023 [Link] ↩︎

50.Indicative price provided by Danavox, 2023 [Link] ↩︎

51.Indicative price provided by Interton, 2020 [Link] ↩︎

52.Information provided by Alps↩︎

53.Price listed in Acosound company official website [Link] ↩︎

54.Information provided by Kunvmed↩︎

55.NewSound company official website [Link] ↩︎

56.NewSound company official website [Link] ↩︎

57.Austar company official website [Link] ↩︎

58.Cofoe company official website [Link] ↩︎

59.Product list provided by Jinghao company official website [Link] ↩︎

60.Blatchford India Product Catalog, 2021↩︎

61.Information provided by Circleg in 2024↩︎

62.Note: PP GF stands for a compound of Polypropylene with the addition of glass fibers↩︎

63.Note: TPU stands for a compound of Polypropylene with the addition of glass fibers↩︎

64.Note: EPP stands for Expanded Polypropylene↩︎

65.Information provided by EXONEO in 2024, the price is Ex-works price↩︎

66.Note: 1) K1 activity level has the ability or potential to use a prosthesis for transfers or ambulation on level surfaces at fixed cadence. Typical of the limited and unlimited household ambulator 2) K2 activity level as the ability or potential for ambulation with the ability to traverse low-level environmental barriers such as curbs, stairs, or uneven surfaces. Typical of the limited community ambulator [Link] ↩︎

67.Mobility India Product Catalog, [Link] ↩︎

68.Indicative price provided by Proted, 2021↩︎

69.Price listed in Rehab Impulse company official website, 2023↩︎

70.Indicative retail price provided by ST&G, 2021↩︎

71.Blatchford India Product Catalog, 2021↩︎

72.Note: PA GF stands for polyamide with glass fiber↩︎

73.Information provided by EXONEO in 2024, the price is Ex-works price↩︎

74.Indicative price provided by Proted, 2021↩︎

75.Price listed in Rehab Impulse company official website, 2023↩︎

76.New Aosuo company official export price list, 2023↩︎

77.Note: Price varies because of different sales volume.↩︎

78.Jingbo company official price list, 2023 (Note: the original price in ¥RMB)↩︎

79.Camfore company official price list, 2023↩︎

80.Note: Price varies because of different material used↩︎

81.Information provided by EXONEO in 2024, the price is ex-works, and the minimum order quantity (MoQ) is 50 pcs.↩︎

82.FPC Alibaba retail price in 2023↩︎

83.Note: Price varies because of different sales volume↩︎

84.Indicative price provided by IB-ER, 2021↩︎

85.Indicative price provided by Metiz, 2021↩︎

86.Price listed in Rehab Impulse company official website, 2023↩︎

87.Shijiazhuang Wonderfu official price list, 2023↩︎

88.Indicative retail price provided by ST&G, 2021↩︎

89.New Aosuo company official export price list, 2023↩︎

90.Jingbo company official price list, 2023↩︎

91.Camfore company official price list, 2023↩︎

92.FPC Alibaba retail price in 2023↩︎

93.Note: Price varies because of different sales volume.↩︎

94.Indicative price provided by IB-ER, 2021↩︎

95.Indicative price provided by Metiz, 2021↩︎

96.Price listed in Rehab Impulse company official website, 2023↩︎

97.Shijiazhuang Wonderfu official price list, 2023↩︎

98.Indicative retail price provided by ST&G, 2021↩︎

99.A speech synthesizer is a technology that converts written text or symbols into spoken words, allowing for audible output of digital content.↩︎

100.As of Android 13 BrailleBack is no longer required to connect to a braille display.↩︎

101.Index: Green = High range model chosen for comparative; Orange = Mid range model chosen for comparative; Blue = Low range/budget model chosen for comparative↩︎

102.Product catalogue provided by CE Mobility [Link] ↩︎

103.Information provided by Colours ↩︎

104.Information provided by DDO↩︎

107.Clasp product catalogue [Link] ↩︎

108.Information provided by Colous↩︎

109.Note: There is also a Razorblade junior version whose primary users are kids)↩︎

110.Note: There is also a Saber junior version whose primary users are kids↩︎

111.Invacare product catalogue [Link] ↩︎

112.Permobil product catalogue [Link] ↩︎

113.CE Mobility product catalogue [Link] ↩︎

114.Information provided by DDO↩︎