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Chapter-05 Pathlogy of the Lens

BOOK TITLE: Manual of Ocular Pathology

Author
1. Biswas Jyotirmay
2. Krishnakumar S
3. Ahuja Shweta
ISBN
9788184489125
DOI
10.5005/jp/books/11243_5
Edition
1/e
Publishing Year
2010
Pages
6
Author Affiliations
1. Sankara Nethralaya, Chennai, Tamil Nadu, India, Sankara Nethralaya, Chennai, Tamil Nadu, Ind, Sankara Nethralaya, A Unit of Medical Research Foundation, Nungambakkam, Chennai, Tamil Nadu, India, Sankara, Nethralaya, Chennai, Tamil Nadu, India, Medical Research Foundation, Sankara Nethralaya, Chennai, India, Sankara Nethralaya, Chennai, India, Medical and Vision Research Foundation, Shankara Nethralaya, Chennai, Medical and Vision Research Foundations, Chennai, Tamil Nadu, India, Medical and Vision Research Foundation Sankara Nethralaya, 18, College Road Chennai, India, Sankara Nethralaya, Medical and Vision Research Foundation, Chennai, India
2. Medical and Vision Research Foundations Sankara Nethralaya, 18, College Road, Chennai, India, Sankara Nethralaya, Chennai, India, Kumars’ Maternity and Surgical Nursing Home, Dombivli, Nirmiti Fertility and IVF Center, Thane, Fortis Hospitals, Mumbai, Maharashtra, India, Mumbai, Maharashtra, India, IAGE, ISAR; JK Women Hospital Mumbai, Maharashtra, India, IAGE, ISAR, JK Women Hospital, Mumbai, Maharashtra, India
3. Medical and Vision Research Foundations Sankara Nethralaya, 18, College Road, Chennai, India
Chapter keywords

Abstract

The basis for the various morphological changes and their different clinical presentations is the alterations that take place within the layers of the lens. Compared with the normal lens, the cataractous lens is characterized by changes in the distribution of the epithelial cells. Cataract which is the predominantly encountered cause of failing vision in clinical practice is of different types depending on the changes that can occur in the capsule, lens epithelium or substance. Thus the manifestation as sub-capsular, cortical or nuclear cataract occurs. Subluxations and dislocations of the lens have an underlying zonular weakness and such alterations in the lens may be the manifestation of systemic diseases. Histopathology of the lens evaluates the epithelium, zonular fibres and identifies the presence of pigments. 4 types of pathological changes in the lens are zonular alteration, capsular alteration, epithelial changes and lens substance changes.

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