AIM: to observe clinical effects of corneal limbus stem cell autograft in treating moderate-severe ocular alkaline burn by stages.

目的：观察分期人自体角膜缘干细胞移植治疗中重度眼部碱烧伤的临床效果。

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Lasik is best for moderate, not severe, vision problems.

镭射视力矫正手术对中等而不严重的视力问题最有效。

《柯林斯英汉双解大词典》

Several pupils were designated as having moderate or severe learning difficulties.

几名学生被认定有一定或严重学习困难。

《牛津词典》

The Verdict: Home testing is fairly accurate for people with moderate-to-severe apnea, but it may miss mild cases, doctors say.

WSJ: A Test for Sleep Apnea From Your Own Bedroom

Generally, people who have mild acne can be treated with topical treatments, and those with moderate acne through a combination of topical and systemic treatments such as isotretinoin, says David Pariser, dermatology professor at Eastern Virginia Medical School in Norfolk and principal investigator of clinical trials with Oslo-based specialty drug maker Photocure, which is developing a photodynamic treatment for moderate-to-severe acne.

WSJ: As More Adults Get Acne, New Photodynmic Treatments Use Light

Donepezil is approved in the U.S. for all stages of Alzheimer's while memantine is approved for moderate-to-severe Alzheimer's.

CNN: Hard to tell, but drug helps as Alzheimer's progresses