Skip to main content
Log in

Medical treatment of senile cataract: clinical investigation of bendazac-lysine using objective and subjective methods

  • Clinical Investigations
  • Published:
Graefe's Archive for Clinical and Experimental Ophthalmology Aims and scope Submit manuscript

Abstract

A modified Zeiss slit lamp coupled with a digital image-processing system was used to evaluate objectively changes in lens transparency over 1 year at 4-month intervals in 150 eyes of 92 patients affected by early senile cataract. A total of 59 patients were treated daily with 1.5 g bendazac-lysine, and 33 patients constituted the control group. At follow-up, visual acuity was also tested using Snellen letter charts at variable contrast to provide an additional parameter closer to traditional methods. Results indicate that the minimal angle of resolution at 10% contrast (MAR10) and the mean gray-level value of the lens image obtained by retroillumination (MLR) are sensitive to early changes in lens transparency. Using MAR10 as a parameter, the control group showed a significant, progressive worsening of the lens status over 12 months, whereas the treated group exhibited no significant changes. MRL indicated the same behaviour as MAR10, although lens damage was detected later in the control group. The results show that bendazac-lysine may delay the formation of lens opacities.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. Baraldi P, Bocca E, Fonda S, Mazza C, Penne A, Vespignani V (1985) New methods for studying lens opacities. Results of a double-blind pilot study on the effect of bendazac-lysine in senile cataract. Ann Oftalmol Clin Ocul 111:1085–1102

    Google Scholar 

  2. Baraldi P, Fonda S, Vecchi D, Penne A, Biondini S, Bocca E, Mazza C, Luppi L, Vespignani V, Toschi G, Benassi B (1986) Coupling a digital image processing system and a slit lamp enables new biometric and densitometric measurements to be performed. In: Blodi F, Brancato R, Cristini G, D’Ermo F, Esente I, Musini A, Philipson B, Pintucci F, Ponte F, Scuderi G (eds) Proceedings of the 25th International Congress of Ophthalmology. Kugler and Ghedini, Rome, pp 222–230

    Google Scholar 

  3. Baraldi P, Fonda S, Murari C, Biondini S, Vecchi D (1987) An image processing system for ophthalmology: densitometry and 3D reconstruction. Proc IEEE Eng Med Biol 3:1345–1346

    Google Scholar 

  4. Bocca E, Baraldi P, Fonda S, Penne A, Vespignani V, Mazza C, Luppi ML, Biondini S, Benassi B, Toschi PG (1986) Quantitative analysis of anterior segment transparency: new accessories for the slit lamp. J Ophthalmic Photogr 9:101–103

    Google Scholar 

  5. Brown NAP, Bron AJ (1985) Medical therapy in the prevention of cataract. Trans Ophthalmol Soc UK 104:748–754

    PubMed  Google Scholar 

  6. D’Ermo F, Ponte F, Laties AM (eds) (1986) Recent developments in the pharmacological treatment of cataract. Kugler and Ghedini, Rome, pp 33–41, 49–52, 59–68, 124–137

    Google Scholar 

  7. Fonda S, Baraldi P, Vecchi D, Bocca E (1986) Modification of the slit lamp for digital image processing of the anterior segment of the eye. Graefe’s Arch Clin Exp Ophthalmol 224:284–287

    Article  CAS  Google Scholar 

  8. Fonda S, Biondini S, Murari C, Baraldi P, Penne A, Bocca E, Mazza C, Luppi ML, Toschi PG, Benassi B (1986) Digital image processing techniques for anterior segment images: 3D reconstruction and densitometry. In: Blodi F, Brancato R, Cristini G, D’Ermo F, Esente I, Musini A, Philipson B, Pintucci F, Ponte F, Scuderi G (eds) Proceedings of the 25th International Congress of Ophthalmology. Kugler and Ghedini, Rome, pp 2781–2786

    Google Scholar 

  9. Hockwin O (1985) The causes and prevention of cataract blindness. Endeavour 9:132–138

    Article  PubMed  CAS  Google Scholar 

  10. Hockwin O, Eckerskorn U, Schmidtmann W, Dragominescu V, Korte I, Laser H (1984) Epidemiological study of the association between lens cataract and case history, blood composition, and enzymes involved in lens carbohydrate metabolism. Lens Res 2:23–41

    Google Scholar 

  11. Kador PF (1983) Overview of the current attempts toward medical treatment of cataract. Ophthalmology 90:352–364

    PubMed  CAS  Google Scholar 

  12. Sanders RR, De Gregorio M, Pioggia M (1986) Bendazac-lysine (Bendalina) as an anticataract agent. Review of basic clinical data. In: Blodi F, Brancato R, Cristini G, D’Ermo F, Esente I, Musini A, Philipson B, Pintucci F, Ponte F, Scuderi G (eds) Proceedings of the 25th International Congress of Ophthalmology. Kugler and Ghedini, Rome, pp 2488–2494

    Google Scholar 

  13. Silvestrini B, Catanese B, Barillari G, Iorio G, Valeri P (1983) Basic data supporting the use of thel-lysine salt of bendazac in cataract. Int J Tiss React 5:217–255

    CAS  Google Scholar 

  14. World Health Organization (1985) Revised draft — guidelines for the clinical investigation of anticataract drugs in senile cataract. WHO Regional Office for Europe, Geneva

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Additional information

Supported in part by grants from the MPI (40%)

Rights and permissions

Reprints and permissions

About this article

Cite this article

Baraldi, P., Fonda, S., Toschi, P. et al. Medical treatment of senile cataract: clinical investigation of bendazac-lysine using objective and subjective methods. Graefe’s Arch Clin Exp Ophthalmol 228, 105–111 (1990). https://doi.org/10.1007/BF02764301

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02764301

Keywords

Navigation