ABSTRACT
We present a case of primary (localised non-familial) conjunctival amyloidosis, which is an uncommon condition, characterised by amyloid deposition within the substantia propria of the conjunctiva. Soft bandage contact lenses were fitted in order to protect the cornea from the mechanical abrasion of the irregular surface of the palpebral conjunctiva. We used non-ionic high water content (70%) soft bandage lenses from Filcon 4A with a Dk of 40. The lenses were well tolerated and gave significant relief of the symptoms.
Subject(s)
Amyloidosis/therapy , Conjunctival Diseases/therapy , Contact Lenses, Hydrophilic , Aged , Amyloidosis/diagnosis , Conjunctival Diseases/diagnosis , Humans , MaleABSTRACT
Some extreme corneal irregularities cannot be treated adequately with corneal contact lenses. For such cases a rigid semi-scleral lens can be prescribed. We evaluated the use of a highly gas permeable rigid semi scleral lens in patients with diseased corneas for whom conventional contact lens strategies had failed. Twenty two patients (29 eyes) were successfully fitted with individually manufactured semiscleral lenses. Corneal hypoxia, which has previously limited the use of polymethylmethacrylate (PMMA) scleral contact lenses, did not occur. The semi scleral lenses were well tolerated. Two cases were selected to illustrate the fitting of these lenses.
ABSTRACT
Ulcerative colitis (Crohn's disease) is a chronic relapsing inflammatory bowel disease of unknown etiology. The most common ocular complications include conjunctivitis and uveitis, particularly iritis. Herein, we describe a patient who had a decrease in visual acuity due to an increasing astigmatism. This was accompanied with a peripheral limbal thinning of the cornea and faint confluent corneal changes. No systemic activity was present during the period that the patient was monitored. Changes of astigmatism were followed up with videokeratography. This apparatus monitors changes in clinical course accurately and makes comparison possible between separate visits.
Subject(s)
Astigmatism/complications , Cornea/pathology , Crohn Disease/complications , Adult , Astigmatism/pathology , Colitis, Ulcerative/complications , Colitis, Ulcerative/diagnosis , Crohn Disease/diagnosis , Female , Follow-Up Studies , Humans , Image Processing, Computer-AssistedABSTRACT
The encircling band used in conventional retinal detachment surgery creates a circular indentation of the eye and thus may increase the anterior-posterior axial length. The myopia induced by encircling elements in retinal detachment surgery varies between 0 and 3 D. In a series of 25 patients, the average change in refraction after surgery was -2.25 D. To achieve early visual rehabilitation, patients were fitted with extended-wear soft contact lenses 7 to 10 days after surgery. The patients were followed for up to 6 months and contact lenses were exchanged according to changes in refraction. Visual rehabilitation using extended-wear lenses was immediate and excellent. The contact lenses were tolerated well. Two patients developed a minor corneal infiltrate under the soft lens and were withdrawn from the study.
Subject(s)
Contact Lenses, Extended-Wear , Myopia/rehabilitation , Refraction, Ocular , Retinal Detachment/surgery , Adult , Aged , Anthropometry , Eye/anatomy & histology , Female , Follow-Up Studies , Humans , Male , Middle Aged , Myopia/etiology , Scleral Buckling/adverse effects , Visual AcuityABSTRACT
Bandage contact lenses can be used following keratoplasty to protect the ocular surface and promote epithelial healing. Rigid gas permeable contact lenses are indicated to correct irregular astigmatism and anisometropia. The Rotterdam Eye Hospital fit 77 keratoplasty patients with contact lenses following their surgery. The methods of fitting contact lenses over the irregular or highly astigmatic surface of a graft are discussed.
Subject(s)
Contact Lenses , Keratoplasty, Penetrating , Occlusive Dressings , Anisometropia/therapy , Astigmatism/therapy , Contact Lenses/adverse effects , Follow-Up Studies , Humans , Keratoplasty, Penetrating/adverse effects , Postoperative Care , Visual Acuity , Wound HealingABSTRACT
The relation between corneal thickness changes and the Dk value of rigid contact lenses was investigated in 42 patients who were fitted with contact lenses for the first time. These 42 patients were divided into 4 groups that were fitted with contact lenses of different Dk values. Corneal thickness in the open-eye state was measured (mid-afternoon) before contact lens fitting and after 6 weeks of daily contact lens wear. The changes in corneal thickness were not significantly different among the 4 contact lens materials (Dk values 8, 26, 54, and 92). We conclude that for daily wear use the lower Dk materials meet corneal requirements. However, there is a significant trend; the higher Dk values result in a thinner cornea. Causes for this phenomenon are discussed.
