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Cataract Specialist in Kolkata

Types of Cataract

Types of Cataract

Posterior subcapsular cataracts

Posterior sub-capsular cataract: As the name suggests, it is located in the posterior cortical layer. Becomes visually significant when it involves the visual axis.Often seen in the relatively younger age group. Symptoms of glare and poor vision in bright light conditions are typical. Near vision may be significantly reduced.

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Types of Cataract

Nuclear cataracts

Nuclear Cataract: This occurs when the opacity involves primarily the nucleus of the lens. Usually involves both eyes but may be asymmetrical. In its advanced form, it becomes hard and brown in colour, called brunescent cataract.

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Types of Cataract

Cortical cataracts

Cortical Cataract: Cortical cataracts form due to local swelling and disruption of lens fibres. It can involve both eyes but may be asymmetrical. Its effect on vision depends on its location in relation to the visual axis. It can commonly cause glare.Progression of cortical cataract may be variable. In the advanced stages, it may progress from mature to hypermature and ultimately to the morgagnian forms.

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Types of Cataract

Congenital cataracts

Congenital cataracts are generally present at birth or may develop within the first year of life. It may be found in one or both eyes. Congenital cataracts may present in various forms, like, lamellar, sutural, coronary, polarCongenital cataracts are generally present at birth or may develop within the first year of life. It may be found in one or both eyes. Congenital , cerulean, nuclear, capsular, complete and membranous. Lamellar is the commonest type. Best cataract surgeon in Kolkata

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Management of Cataract

Signs and Symptoms of cataract

Decreased visual acuity: This is the commonest presenting feature. The degree of loss of vision will depend on the type and grade of cataract. Even a small posterior sub-capsular opacity may lower vison for near work, to a great extent.

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Preoperative Tests

External examination Slit lamp examination Retina evaluation Special Test – Potential Acuity Estimation, Visual Fied Testing Biometry Corneal Topography Evaluation of General Health

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Indications for Cataract Surgery

Desire for improved of visual function, is the commonest indication. Phacolytic glaucoma Phacomorphic glaucoma Phacoantigenic uveitis Dislocation of lens In situations where cataract obscures fundus view and management of other ocular diseases are impaired, cataract specialist in Kolkata. In any situation where, cataract adversely affects daily activities

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Surgery for cataract

Intra-capsular Cataract Extraction Extra-capsular Cataract Extraction Small incision Cataract Surgery Phaco-emulsification Femtosecond laser assisted best cataract surgeon in Kolkata

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Intra Ocular Lens

Types according to anatomical placement of IOL in the eye

Types according to anatomical placement of IOL in the eye Posterior Chamber Intra-Ocular Lens Anterior Chamber Intra-Ocular Lens Scleral Fixation Lens Iris Fixation Lens

Types according to design of the IOL

Muli-piece IOL and Single piece IOL Monofocal and Multifocal IOL Aspheric IOL Toric IOL Accomodating and pseudoaccomodating IOL.

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