By American Academy of Ophthalmology, Steven I. Rosenfeld, MD
Studies the anatomy, body structure, embryology, and pathology of the lens. additionally offers an outline of lens and cataract surgical procedure, and describes the issues of surgical procedure.
Read or Download 2007-2008 Basic and Clinical Science Course Section 11: Lens and Cataract PDF
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Additional resources for 2007-2008 Basic and Clinical Science Course Section 11: Lens and Cataract
31 This broken lens could also be subtarsal (under the upper lid) or tucked in the lower conjunctival fornix. Red Eye 2. 4% or amethocaine 1%. 3. Use a slit lamp if available. 4. Examine the lower conjunctival fornix by (Fig. 32): ■ making the patient look up while you pull their lower lid down ■ ask them to look left and right whilst looking up ■ look for the lens in the folds of conjunctiva. 5. Evert the upper lid – to do this (see p. 32): ■ ask the patient to look down and keep looking down ■ place the wooden stick of a cotton bud horizontally across the mid portion of the upper lid – grasp their eyelashes firmly and gently rotate the lid upwards over the stick ■ ensure that they are still looking down – you cannot evert otherwise ■ remove the stick and hold the eyelid in position by holding the lashes ■ make the patient look left and right again to see if lens is exposed ■ if lens not found, sweep the cotton bud under the upper lid – uncomfortable.
18c) ■ fold one patch in half and place over the closed eye ■ place the other patch on top and tape down firmly. 1. Discharge on chloramphenicol ointment 1% four times daily for 1 week. 2. Advise patient to leave out contact lenses during treatment. Referral and Follow Up ■ ■ review after 24 hours if not settling optician once settled for contact lens check. LOST CONTACT LENS (Fig. 31) Features ■ ■ may occur spontaneously or following trauma – typically sports related often difficult to see with naked eye.
5% hourly (add 4 ml sterile water to 80 mg/2 ml phial of IV Genticin). 6. Atropine 1% drops three times daily. Dendritic Ulcers 1. Zovirax ointment 3% five times a day for 5 days – ensure that this is the eye preparation and not for skin use. 2. Cyclopentolate 1% drops twice daily. 3. Small dendritic ulcer will usually resolve within 5–7 days on adequate treatment. Marginal Ulcers 1. Chloramphenicol ointment four times daily for 1 week. 2. Cyclopentolate 1% drops twice daily if the eye is very painful.