Contact lens topography - Study guides, Class notes & Summaries

Contact Lens – Topography Exam Review 2024/2025 1 / 21 Zones of the Cornea for Topography: Names, Location...

Certified Ophthalmic Assistant (COA) Questions and Answers Already Passed ____ ____ ____ is a major contributing factor in contracting the parasitic organism Acanthamoeba. Contact lens wear ____ ____ is a red dye useful in evaluating the integrity of the corneal epithelium. Rose bengal ____ are used to determine sensitivity of organisms to certain drugs so that effective therapy can be carried out. Cultures ____ devices create three dimensional digital images of the optic nerve, ...

A contact lens wearer presents with acute red eyes. The fitter would most likely ask the patient: a) Do you always wash your hand before inserting your lenses b) What lens care products have you been using c) Do you have a history of blepharitis d) Have you injured your eye recently - Answer-b) What lens care products have you been using A corneal topography map of a patient with keratoconous would most likely show a/an: a) central plateau with symmetrical steepening in the mid-periphery ...

"K" is the ____ of the two meridians - flatter 4 refractive mediums - -Cornea -Aqueous -Crystalline Lens -Vitreous A ____ fitting lens is fitted flatter than K and will touch at the corneal apex with excessive movement over the cornea. It is not uncommon for this lens to fall off the eye or become easily decentered. Such a lens may cause abrasions at the corneal apex and may also cause corneal edema. - loose A lens with a steep CPC that vaults the corneal apex and touches the cornea at...

Certified Paraoptometric Test Flash Cards Exam Review 2024/2025 A+ Graded What is the measure of the finest detail the eye may detect? A. Keratometry B. Visual field C. Visual acuity D. Retinoscopy - ANS-C. Visual acuity Corneal Topography is used to screen patients before refractive surgery and diagnose refractive disorders and diseases. A. True B. False - ANS-A. True What happens when someone is diagnosed with keratoconus? A. The retina pulls away from the eyelid B. The cornea th...

What is NOT important when documenting the history of an ocular injury? - Answer-Presence of others when injury occurred Globe rupture following blunt force injury should always be suspected when - Answer-retinal detachment, vitreous hemorrhages, and a rupture of the choroid are present Sudden loss of vision in one eye MOST likely indicated - Answer-CRAO Which one of the following ocular conditions will LEAST likely present in a patient's family history - Answer-Conjunctivitis Proliferat...

What is the chart most often used to measure acuity at distance called? Snellen Chart A visual condition where the eyes make repetitive, uncontrolled movements often resulting in a reduced vision is known as? Nystagmus What is a form of strabismus in which one or both eyes turn inward? Esotropia Glaucoma causes damage to the eye? True What happens when someone is diagnosed with keratoconus? The cornea thins and bulges forward. What is not part of the case history? ...

Optometry Vocabulary Test Questions and Answers Corneal Topography - Answer-Map of the variations of curvature in the cornea Corneal Ulcer - Answer-Localized infection in anterior portion of cornea; can be bacterial, fungal, or viral; commonly secondary to contact lens overwear Diabetic Retinopathy - Answer-Changes in the retina due to longstanding or uncontrolled DM; may include hemorrhages, cotton wool spots, exudates, and neovascularization Diagnosis - Answer-The decision reached...

The answer is D. The posterior optical zone will directly affect the lens to cornea relationship of a rigid gas permeable lens. If the posterior optical zone is steepened, it will increase the sagittal depth. If it is flattened, it will decrease the sagittal depth. Changing the power, which is accomplished by changing the anterior optical zone, will not affect the sagittal depth of the lens, nor will changing its edge design. - Answer 1. The sagittal depth of a rigid gas permeable contact len...

CPSS Visual Acuity - correct answer the numerical value associated with the smallest objects the patient can see on specific eye charts at a specific distance. -cornerstone of the eye exam External Exam - correct answer Consists of 3 segments: -Confrontation Visual Field -ExtraOcular Motility -Pupil Evaluation Confrontation Visual Field (CVF) - correct answer Obtains a gross measurement of the patient's peripheral vision. It is useful in the detection of damage due to a stroke, ...