Accommodation and Presbyopia — Flashcards

Flashcard 1: The total refractive power of schematic eye: _____ D

Answer: 58.64

Flashcard 2: A patient with myopia more than 1D would exhibit _____ movement of red reflex when retinoscopy is done from a distance of 1m without cycloplegia.

Answer: against

Flashcard 3: Purkinje image 2 is formed from the _____ surface of the cornea and is Erect

Answer: posterior

Flashcard 4: Hyperopic Photorefractive Keratectomy (PRK) is used for the treatment of _____

Answer: Hypermetropia

Flashcard 5: Moderate myopia, when the error is _____D.

Answer: -3 to -6

Flashcard 6: The total refractive power of the human cornea is approximately: _____ D

Answer: 43

Extra: • Total refractive power of the eye (Reduced eye): 60 D • Corneal power: +43 D (approx. 2/3 of total power) • Lens power: +15 to +19 D (approx. 1/3 of total power) Note: In the 'Reduced Eye' model, the eye is simplified to a single refracting surface with a total power of 60 D. The value 43 D specifically refers to the cornea in a standard schematic eye.

Flashcard 7: Angle _____ is the angle between the line of sight and pupillary axis at the cornea

Answer: lambda

Flashcard 8: Low myopia is defined as a refractive error of ≤ _____ D.

Answer: 3

Flashcard 9: Adequacy of the accommodative power being significantly less than normal physiological limits for the patient's age is called _____

Answer: insufficiency of accommodation.

Flashcard 10: The following retinoscope is also called _____

Answer: Priestley Smith retinoscope