What is the common age-related opacity of the crystalline lens that reduces visual acuity?

What is the common age-related opacity of the crystalline lens that reduces visual acuity?

• A. AMD.
• B. Cataract.
• C. Glaucoma.
• D. Presbyopia.

Answer: (B)

The idea here is that the lens becomes cloudy with age, blocking and scattering light before it reaches the retina. This clouding is called a cataract, and it gradually reduces visual acuity by making vision blurry, hazy, and less bright, especially in glare or dim lighting. Cataracts arise from changes in the lens proteins and fibers over time, so the problem is centered in the lens itself. Other conditions affect vision differently. Age-related macular degeneration damages the retina at the back of the eye, specifically the macula, causing loss of central vision without lens clouding. Glaucoma involves damage to the optic nerve, often with increased eye pressure, leading to progressive peripheral vision loss rather than lens opacity. Presbyopia is a loss of the eye’s ability to focus on near objects due to stiffening of the lens, but it doesn’t create a cloudy lens. So, the age-related opacity that reduces visual acuity is cataract.

The idea here is that the lens becomes cloudy with age, blocking and scattering light before it reaches the retina. This clouding is called a cataract, and it gradually reduces visual acuity by making vision blurry, hazy, and less bright, especially in glare or dim lighting. Cataracts arise from changes in the lens proteins and fibers over time, so the problem is centered in the lens itself.

Other conditions affect vision differently. Age-related macular degeneration damages the retina at the back of the eye, specifically the macula, causing loss of central vision without lens clouding. Glaucoma involves damage to the optic nerve, often with increased eye pressure, leading to progressive peripheral vision loss rather than lens opacity. Presbyopia is a loss of the eye’s ability to focus on near objects due to stiffening of the lens, but it doesn’t create a cloudy lens.

So, the age-related opacity that reduces visual acuity is cataract.