Attitude and beliefs of Nigerian undergraduates to spectacle wear.

BACKGROUND: Uncorrected refractive error is a common cause of preventable visual impairment. Glasses are the cheapest and commonest form of correction of refractive errors. To achieve this, patients must exhibit good compliance to spectacle wear. Patients' attitude and perception of glasses and eye health could affect compliance to spectacle wear. OBJECTIVE: To determine the attitude and beliefs of Nigerian undergraduates to spectacle wear. METHOD: A cross sectional study of 500 undergraduates of the University of Benin, Nigeria. Age range was from 18 to 30 years, mean age 23 ± 2.7 years. There were 269 males and 231 females. Semi structured questionnaires were distributed to the participants and collected same day after completion. RESULTS: Two-thirds (68%) of the total population studied had not heard of refractive error. About a third (38%) believed wearing eyeglasses was one of the methods used to correct refractive error. Half (50%) believed they would wear spectacles if prescribed with one by their doctor. Sixty-four percent believed eyeglasses are harmful to the eyes; and 65% did not know that eyeglasses could be used to relieve other forms of ocular discomfort like headache and tearing. Fifty-seven per cent of respondents saw people who wore eyeglasses as visually handicapped, while 60% believed that eyeglasses were meant for old people. Majority of the respondents (56%) believed that they would be teased if they wore glasses. CONCLUSION: Knowledge of refractive errors and acceptance of glasses for the correction of refractive errors among Nigerian undergraduates is not encouraging. Public enlightenment programs to promote benefits of wearing prescribed spectacles are needed.

Adhesive capabilities of Staphylococcus aureus and Pseudomonas aeruginosa isolated from tears of HIV/AIDS patients to soft contact lenses.

Fifty conjunctival swab samples collected from ELISA confirmed HIV/AIDS seropositive patients who were referred to the HIV/AIDS laboratories of the University of Benin Teaching Hospital and Central Hospital both based in Benin City, Nigeria were aseptically cultured on appropriate media by standard methods. The resulting isolates/strains, after identification by standard methods, were tested for their ability to adhere to two hydrophobic non-ionic daily wear silicone hydrogel soft contact lenses (i.e. lotrafilcon B, WC 33% and polymacon, WC 38%) as well as to two hydrophilic ionic conventional extended wear silicone hydrogel soft contact lenses (i.e. methafilcon A, WC 55% and omafilcon A, WC 60%) by the adhesiveness/slime production modified vortex/Robin device method. Evidence of adhesiveness/slime production was indicated by presence of a visible stained film lining the surface of the contact lens which was measured and recorded as strong or weak according to the density of the adhered bacterial film. Fourteen (28.0%) Staphylococcus aureus strains and 10 (20.0%) Pseudomonas aeruginosa strains were obtained among other organisms. Staphylococcus aureus strains adhered in decreasing order to lotrafilcon B (55.4 ± 4.7), polymacon (46.4 ± 8.4), methfilcon A (46.4 ± 8.4) and omafilcon A (25.0 ± 6.4) with no significant difference in adhesive strengths of individual strains (P > 0.05). Pseudomonas aeruginosa strains also recorded decreasing adhesive strengths to lotrafilcon B (37.5 ± 8.2), polymacon (28.6 ± 6.3), methafilcon A (26.8 ± 5.5) and omafilcon A (23.2 ± 5.5) also with no significant difference in adhesive strengths of individual strains (P > 0.05). Attachment strengths of Staph. aureus strains to all four contact lenses were higher than those of Pseudomonas aeruginosa strains. Both organisms adhered most to hydrophobic lotrafilcon B and least to hydrophilic omafilcon A. This invitro adhesion studies revealed that daily wear silicone hydrogel low water content, non-ionic contact lenses are more prone to bacterial adhesion than the conventional extended wear hydrogel high water content, ionic contact lenses and hence, there is more risk of microbial adhesion to the former compared to the latter. Other implications are highlighted.

Ocular leprosy in institutionalized Nigerian patients.

OBJECTIVE: This study was aimed at presenting the profile of ocular lesions observed in the in-mates on multidrug treatment, of a leprosy rehabilitation centre in Nigeria. DESIGN: Cross-sectional. METHOD: One hundred patients were selected by systematic random sampling. Sixty-nine had ocular involvement and were the subjects of this study. The age range was 15 to 80 years with a mean age of 51 years. There were 57 males (82.6%) and 12 females (17.4%). The range of duration of treatment was two months to 30 years, with a mean of 15 years. Examination of the anterior and posterior segments of the globe and its adnexa was carried out using Penlight, magnifying loupe and direct ophthalmoscope. Visual acuity was recorded using the Snellen charts. RESULTS: Lepromatous leprosy patients had the greatest incidence of ocular lesions. Ocular lesions were more in patients who have had leprosy for ≥ 15 years. Madarosis (72.5%) and lagophthalmos (29.0%) were the commonest lesions. Corneal involvement was seen in 36.2%. Conjunctivitis in 14.5% . Trichiasis in 10.1% and ectropion in 8.7% . 17.4% were legally blind (VA≤3/60) in the better eye, and 17.4% had cataract in at least one eye. There was no statistically significant difference in the incidence of ocular lesions among males and females, and between patients with Lepromatous and Tuberculoid leprosy. CONCLUSION: Ocular complications are common and sight threatening in leprosy patients. Regular screening and outreach by eye care providers should be incorporated into leprosy care programmes.

The influence of socioeconomic and nutritional status on menarche in Nigerian school girls.

A study of 352 randomly selected secondary school girls in an urban population in Southern Western Nigeria revealed a mean menarcheal age of 13.94 +/- 1.31 years and that 76.8% of girls attained menarche between ages 13 and 15 years. Age-matched pre- and post-menarcheal girls did not differ significantly in biophysical measurements, however, nutritional status was strongly and positively associated with attainment of menarche. School girls from the upper socio-economic class reached menarche 11 months earlier than the lower socio-economic counterparts. A significant finding of this study is that the declaration rate in age at menarche was slowest in girls from high socio-economic households. This deceleration was not influenced by body mass suggesting that socio-economic factors play a unique role in the secular trend widely reported in menarcheal age.