This point is not necessarily at the geometric center of the cornea and is found by locating the center of the pupil while the patient is maintaining fixation coaxially with the surgeon. However, the pupil does
If the pupil does not dilate sufficiently with the steps described so far, you can proceed to pupil stretching, using iris hooks, or inserting a pupil-expansion ring. Any of these processes can create a maximum pupillary opening of about the same circumference or perimeter, which means that ...
If the pupil does not dilate sufficiently with the steps described so far, you can proceed to pupil stretching, using iris hooks, or inserting a pupil-expansion ring. Any of these processes can create a maximum pupillary opening of about the same circumference or perimeter, which means that t...
MIOSIS: the affected pupil is smaller than the opposite pupil. It does not dilate when the eye is shaded. PTOSIS: the affected eyelid droops and may be slightly raised voluntarily.Ptosisis less marked than with a IIInerve palsy. DISTURBANCE OF SWEATING: depends on the site of the lesion.Ab...
Also calledAdie's tonic pupilortonic pupil, this is a rare neurological disorder where one pupil is larger than normal and is slow to react to light. Sometimes, the pupil does not constrict at all. This pupil abnormality may be accompanied by poor or absent tendon reflexes. When this occurs...
I'm skeptical that my pupil does not fully dilate under light polluted skies. When I compare my 10x50s with my 10 x 70s, I see considerably more stars in M6 and M7 with the larger aperture. Both binos are measured at full aperture. They're low and on the hoizon, the skyglow is ...
In low-light conditions, the pupil dilates so more light can reach the retina to improve night vision. In bright conditions, the pupil constricts to limit how much light enters the eye (too much light can cause glare and discomfort, and it may even damage the lens and retina). ...
The surgical insertion of an intra-ocular contact lens into the posterior chamber in front of the natural lens to correct the defect is not undertaken today if the pupil does not dilate with drugs to at least a 5 mm diameter. The present device can be used to sufficiently dilate the iris...
During phacoemulsification surgery and vitreo-retinal surgery, when the pupil does not dilate with medicated drops, a device is required for mechanical enlargement of the pupil. Such a device has to maintain the pupil in the enlarged state and prevent it from collapsing for the entire duration of...
pupil可以用作名词 pupil的基本意思是“同学”,指由老师亲自照看和指导的对象,尤指中学校生。在美式英语里, pupil仅指“学校生”。当侧重于从学习的角度或从对老师敬重的角度时, pupil还可指私人老师或学者指导的“门徒,弟子”,此时pupil没有年龄或学历的限制。pupil后面通常接in引起的短语,说明是“哪方面的同学...