Which measurement is included in accommodative disorder testing?

• A. Amplitudes
• B. Color Vision
• C. Astigmatism Cylinder
• D. Intraocular Pressure

Answer: (A)

Amplitude of accommodation directly measures how much the eye can increase its lens power to focus from distance to near, making it the central metric when evaluating accommodative disorders. By testing the near point or using minus-lens methods, clinicians gauge the dioptric range the eye can achieve and compare it to age-based norms. A reduced amplitude signals accommodative insufficiency, which shows up as blur, fatigue, and difficulty sustaining near work. In contrast, color vision, astigmatism cylinder, and intraocular pressure assess other aspects of vision and eye health—color vision for chromatic discrimination, astigmatism for refractive error, and IOP for glaucoma risk—so they are not measures of the accommodative system.