The document summarizes sleep apnea and its ocular manifestations. Obese middle-aged men with sleep apnea often experience excessive daytime sleepiness, disruptive snoring, and witnessed apneas during sleep. Common ocular manifestations of sleep apnea include asthenopia, CPAP-associated red eye, floppy eyelid syndrome, non-arteritic anterior ischemic optic neuropathy (NAION), papilledema, and normal tension glaucoma. Sleep apnea has been linked to an increased risk of developing these eye conditions.