Rebleeding or secondary haemorrhage following traumatic hyphema.

Rebleeding or secondary haemorrhage is a serious complication following traumatic hyphema, it occurs with a frequency of between 6-38%. Secondary haemorrhage most often takes place between the 2nd and 6th day after the primary trauma. All patients with traumatic hyphemas seen here from 1st January 1985 to 31st December 1985 were admitted to the hospital on a prospective study protocol. Patients were included consecutively with the exception of those with suspected penetrating ocular injuries 15 cases. The determination of the visual acuity, the extent of the hyphema was categorized as follows: Group 1, small hyphema with blood occupying less than one third of the anterior chamber. Group 2, hyphema occupying one third to one half the anterior chamber. Group 3, hyphema of greater than one half to less than the anterior chamber. Group 4, total hyphema. The treatment regimens included absolute bed rest, patching that eye, no aspirin, no mydriatics or miotics, no prednisolone, no antifibrinolytic agents, tranquilizer; if increase intraocular pressure, Diamox 1 gm. orally; if there were complications such as glaucoma, blood-stained cornea, paracentesis were performed. Of 93 patients with traumatic hyphena, male 84 (90.32%), female 9 (9.68%), age 3-70 years (mean 22.24 yrs.). Rebleeding during hospitalization 3 (3.22%), if included presumed preadmission rebleeds 5, rebleed in this study total 8 (8.60%). Increased intraocular pressure and paracentesis were performed every cases of rebleeding, but the final visual acuity was 6/60 in only case (12.5%).

Corneal radius of curvature in emmetropic Thai people.

The corneal radius of curvature of 110 emmetropic Thai people from the out-patient section, Department of Ophthlmology was measured by keratometer, male 37, female 73, age 14-58 years, the mean corneal radius of curvature right eye in the vertical meridian = 7.612+0.264 mm., in the horizontal meridian = 7.726+0.257 mm., left eye in the vertical meridian = 7.610+0.269 mm., in the horizontal meridian = 7.733+0.269 mm. These corneal curvature value in Thai people were more curve than that of the European and American eye. This assume that the dimension of the Thai eye are smaller than those of the European and American eye.