Background: Ocular dominance is the physiological preference of one eye over the other, hence its input is favoured when there is conflicting information to the two eyes. Accommodation is the mechanism by which the eye changes focus from distant to near images and is produced by a change in the shape of the crystalline lens. The aim of this study was to compare the accommodative amplitude, facility and lag in the dominant and non-dominant eye.Methods: This cross sectional study was carried out on 80 visually normal subjects. Ocular dominance was determined using hole-in-the- card method. Amplitude of accommodation, accommodative facility and response was measured monocularly and randomly using push up method, ±2.00DS flipper lenses and Nott technique respectively.Results: Results obtained from the study showed that the right eye was dominant in 62.5% of subjects. The mean (SD) for accommodative amplitude, facility and response (lag) in the dominant eye was 11.08 (2.16) D, 10.00 (1.52) cycles per minute and 0.62 (0.27) respectively. The mean (SD) for accommodative amplitude, facility and lag in the non-dominant eye was 10.98 (2.20) D, 9.86 (1.44) cycles per minute and 0.60 (0.25) D respectively.Conclusions: It may be inferred that the dominant eye has more accommodative amplitude, facility and lag than the non-dominant eye but this difference was not statistically significant.

Background: The presence of female sex hormones has been linked to variation in intraocular pressure. Numerous studies have revealed that these hormones exert neuroprotective effect and a vascular effect on intraocular pressure regulation. This study was to determine the effect of injectable contraceptives on intraocular pressure in women of child bearing age.Methods: It was a cross-sectional study, carried out at the University of Benin Teaching Hospital involving 85 healthy Nigerian women of child bearing age (20-50 years). The women were divided into two groups 20-35 years (Mean age was 29.66±3.43) and 36-50 years (Mean age 40.66±4.41). A brief case history was conducted to gain information on their personal data, oculo-visual history and general health. Intraocular pressure (IOP) was measured at baseline and two months after injectable contraceptive.Results: There was no statistical significant difference in the IOP reading at baseline and after injectable contraceptives among women in group 20-35 (p=0.819), whereas women in group 36-50 years showed a Statistical significant difference in their IOP at baseline and after injectable contraceptives (p=0.049).Conclusions: Injectable contraceptives have significant effect on IOP of healthy women of childbearing age. Further studies involving a larger sample should be conducted over a long duration in order to achieve a better generalization of the findings on this subject matter.

Background: Some studies have demonstrated that football players may be at risk for clinically relevant increases in blood pressure (BP). BP is often associated with intraocular pressure (IOP). However, there is scarce literature on BP and IOP in football athletes. The aim of this investigation was therefore to study BP and IOP in young professional footballers and non-athletes.Methods: A cross-sectional study was conducted among nineteen (19) professional male football athletes of 18-28 years old; and nineteen (19) matched controls who were not active in any sports. All measurements were taken between 3 pm and 6 pm to lessen the effects of diurnal variations on IOP. Case history was first carried out to ascertain if the subjects were suitable for the study. Non-athletic subjects were matched with athletes according to sex, age, body mass index and random blood sugar. BP was measured in the right arm of each subject in sitting position with a mercury sphygmomanometer. IOP was measured in both eyes with a Schiotz tonometer.Results: Compared to non-athletes, the professional football athletes had significantly higher mean systolic BP (p=0.003), diastolic BP (p=0.030) and IOP (p=0.036). There was no correlation between IOP and systolic or diastolic BP in the football athletes (p>0.05).Conclusions: The young professional footballers were more predisposed to high blood pressure and ocular hypertension than the matched controls.