Which stage of cataract is considered best for surgical correction?

• A. Immature cataract
• B. Mature cataract
• C. Hypermature cataract
• D. Morgagnian cataract

Answer: (A)

The timing of cataract surgery is best when the lens is partially opacified but not yet liquefied. In an immature cataract, opacity has begun but the rest of the lens remains relatively clear, and the capsule is still sturdy. This combination makes the eye easier to visualize and the lens easier to remove: the anterior capsule can be opened cleanly, the nucleus and cortex are not yet softened or dispersed, and there’s less risk of cortical leakage or sudden shifts in the anterior chamber. These factors translate into a safer, more controlled extraction with fewer intraoperative surprises and a smoother recovery.

In contrast, a mature cataract is fully opaque, which can make visualization challenging and increase the difficulty of a precise capsulorhexis, even though removal is possible. Hypermature and Morgagnian cataracts involve liquefaction of the cortex and often a more fragile capsule, with risks such as phacolytic or phacomorphic glaucoma, leakage of lens material, and potential loss of zonular support, all of which complicate surgery. Therefore, the immaturity stage represents the optimal balance for safer surgical correction.