In the tissue of the iris of most vertebrates there are special muscles, the dilator and the sphincter, which regulate the entry of light rays into the eye by dilating and contracting the pupil; the iris thus performs the role of a diaphragm. Eye color depends on the pigmentation of the ...
Before surgery, patients receive dilating drops to make the pupil as large as possible. The surgeon makes a tiny incision, usually with a small pointed scalpel, between the clear and white part of the eye to gain access to thelens capsule, a thin membrane similar in thickness to a plastic ...
Anesthesia is meant to make the patient comfortable and the choice depends on the patient’s cooperation, condition of the eye, and the surgeon’s expertise. Attempting topical anesthesia in an uncooperative patient, non-dilating pupil or a novice surgeon can result in disaster. Use of blunt kni...
1. The drugs that can pass across the blood brain barrier are A. small in molecular weight and ionized drugs B. small in molecular weight and nonionized drugs C. large in molecular weight and ionized drugs D. large in molecular weight and nonionized drugs E. all of above are not true ...
Before surgery, patients receive dilating drops to make the pupil as large as possible. The surgeon makes a tiny incision, usually with a small pointed scalpel, between the clear and white part of the eye to gain access to thelens capsule, a thin membrane similar in thickness to a plastic...
Although we did not directly measure the pupil size in our study, the statistically significant increase in ACD observed in the atropine group, compared to the control group, suggests a significant pupil-dilating effect of 0.03% atropine eye drops. In contrast to the present study findings, a ...