a. Excessive light refraction d. Corrected with concave lens e. Image focused in front of retina
d. Loss of accommodation associated with age
a. Use a penlight to shine a light obliquely over the eyeball
a. LASIK d. Photorefractive keratectomy (PRK) e. Surgical implantation of intraocular lens
d. May be able to perform many tasks and activities with vision enhancement techniques
a. Address the patient, not others with the patient, in normal conversational tones b. Face the patient and make eye contact c. Introduce self when approaching the patient and let the patient know when you are leaving d. Orient to sounds, activities, and physical surroundings e. Use a sighted-guide technique to ambulate and orient patient **Do not move objects positioned by the patient without the knowledge and consent of the patient; ask the patient what help is needed and how to provide it.
c. Cover the eye with a dry sterile patch and a protective shield
b. Acute bacterial conjunctivitis
a. Keratitis
d. Frequent and thorough hand washing to avoid spreading the infection
a. Ocular pain b. Photophobia f. Decreased visual acuity
d. Vision enhancement techniques may improve vision until surgery becomes an acceptable option to maintain desired activities
c. A gradual loss of vision with abnormal color perception and glare
a. Assess the visual acuity in the unoperated eye to plan the need for postoperative assistance
a. Cryopexy d. Laser photocoagulation
a. Specific positioning and activity restrictions are likely to be required for several days
b. Emphasize the use of vision enhancement techniques to improve what vision is present
c. Completely cover all the skin to avoid a thermal burn from sunlight
c. Promoting regular measurements of intraocular pressure for early detection and treatment of glaucoma
a. Gradual loss of peripheral vision d. May be caused by increased production of aqueous humor f. Resistance to aqueous outflow through trabecular meshwork
a. Caused by lens blocking papillary opening c. Causes loss of central vision with corneal edema e. Causes sudden, severe eye pain associated with nausea and vomiting f. Treated with hyperosmotic oral and IV fluids to lower intraocular pressure
Drug Rationale for use Betaxolol-An andrenergic blocking agent that decreases aqueous humor production Dipivefrin-An andrenergic agonist that decreases the production of aqueous humor and enhances outflow facility Carbachol-A cholinergic agent that stimulates iris sphincter contraction, leading to miosis and opening of the trabecular network, increasing aqueous outflow Acetazolamide-A carbonic anhydrase inhibitor that decreases aqueous humor production
b. Monitor patients at risk for drug-induced ototoxicity for tinnitus and vertigo
Guiding jet planes to and from airport gates (1) Sitting in front of amplifiers at a rock concert (2) Using a chainsaw continuously for 2 hours (3) Heavy factory noise for 8 hours (4) Noisy restaurant for 12 hours (5) Working in a quiet home office for 8 hours (6)