investigation of different RGP lens fitting in a keratoconic population at assir central hospital

To assess the effect of rigid contact lens design and keratoconus severity when selecting initial lens back optic zone radius [BOZR] for keratoconus contact lens fitting. Seventy new keratoconus patients [56 female, 14 male; mean age 19.5 [SD 5.0] years; range 11-28 years] were recruited from referrals to the Department of Ophthalmology, Assir Central Hospital. Patients were classified for keratoconus severity according to keratometry reading, and then fitted with multicurve [McGuire Steep or Regular], tricurve or Percon continuous curve rigid lens designs, visual acuity check and slit-lamp examination were also performed for all Patients. [i] Percon lens is suitable for early corneal curvature changes; [ii] The tricurve lens is able to fit a wide range of corneal shapes from mild to severe keratoconus; [iii] The McGuire lenses are better suited for the moderate to severe forms of keratoconus, and the different lens diameters do not appear to influence the lens choice. BOZR correlated strongly with the keratometry readings [p< 0.001], but not with corneal eccentricity [p= 0.203]. Severity of keratoconus strongly influences the optimum lens design and BOZR. Tricurve or multicurve lens designs are better suited for advanced keratoconus, while Percon curve lenses are only suitable for very early stages of the disease

Incidence of glaucoma capsulare in 100 consecutive patients with pseudoexfoliation syndrome

Purpose The aims of this prospective study were to determine the incidence of glaucoma in patients with pseudoexfoliation syndrome and to compare the age and sex distribution in unilateral and bilateral cases. Methods One hundred consecutive patients with pseudoexfoliation syndrome detected during routine examination were studied. Patients with a known history of glaucoma as well as patients with uveitis or history of ocular trauma were excluded from the study. All patients underwent complete ophthalmic examination including applanation tonometry, gonioscopy and ophthalmoscopy. Results Of the 100 patients [51 males and 49 females] found to have pseudoexfoliation syndrome 26 [13 males and 13 females] had unilateral involvement and 74 [38 males and 36 females] had bilateral involvement. A total of 174 eyes were found to have pseudoexfoliation syndrome; 73.4% had normal intraoccular pressure, 2.2% had ocular hypertension [intraoccular pressure greater than 22 mm Hg but no cupping or field loss] and 24.4% had glaucoma. Conclusion This study found the incidence of glaucoma capsulare in the 100 consecutive patients [174 eyes] to be 24.1% Males with glaucoma outnumbered females at 36% versus 11.8%. The bilateral cases occurred in the older age group and shoowed a higher perrcentage of glaucoma than in unilateral cases but there was no statistical significance found